ISSS-ABSTRACTS
"Sympathectomy is a technique about which we have limited knowledge, applied to disorders about which we have little understanding." Associate Professor Robert Boas, Faculty of Pain Medicine of the Australasian College of Anaesthetists and the Royal College of Anaesthetists, The Journal of Pain, Vol 1, No 4 (Winter), 2000: pp 258-260
The amount of compensatory sweating depends on the patient, the damage that the white rami communicans incurs, and the amount of cell body reorganization in the spinal cord after surgery.
Other potential complications include inadequate resection of the ganglia, gustatory sweating, pneumothorax, cardiac dysfunction, post-operative pain, and finally Horner’s syndrome secondary to resection of the stellate ganglion.
www.ubcmj.com/pdf/ubcmj_2_1_2010_24-29.pdf
After severing the cervical sympathetic trunk, the cells of the cervical sympathetic ganglion undergo transneuronic degeneration
After severing the sympathetic trunk, the cells of its origin undergo complete disintegration within a year.
http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0442.1967.tb00255.x/abstract
Other potential complications include inadequate resection of the ganglia, gustatory sweating, pneumothorax, cardiac dysfunction, post-operative pain, and finally Horner’s syndrome secondary to resection of the stellate ganglion.
www.ubcmj.com/pdf/ubcmj_2_1_2010_24-29.pdf
After severing the cervical sympathetic trunk, the cells of the cervical sympathetic ganglion undergo transneuronic degeneration
After severing the sympathetic trunk, the cells of its origin undergo complete disintegration within a year.
http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0442.1967.tb00255.x/abstract
Friday, June 29, 2012
Sympathectomy exacerbated the inflammation and osteopathic destruction of arthritic joints
http://www.ncbi.nlm.nih.gov/pubmed/8632052
Tuesday, June 26, 2012
results of sympathectomy deteriorate with time
results of sympathectomy deteriorate with time (T.S. Lin & Fang, 1999; Walles et al., 2008). This recurrent postoperative sweating may be due to local nerve regeneration but has not yet been proven (Lee et al., 1999).
http://www.intechopen.com/books/topics-in-thoracic-surgery/surgical-management-of-primary-upper-limb-hyperhidrosis-a-review
http://www.intechopen.com/books/topics-in-thoracic-surgery/surgical-management-of-primary-upper-limb-hyperhidrosis-a-review
Pain in the form of intercostal neuralgia with dysesthesia at the site of trocar insertion is rarely documented but more frequent than generally recognized
Pain in the form of intercostal neuralgia with dysesthesia at the site of trocar insertion is rarely documented but more frequent than generally recognized. Many centres perform short-stay surgery that may lead to underestimation of pain results. In most series pain resolves within months, but Walles and colleagues could detect a persistence for years (Walles et al., 2008).
http://www.intechopen.com/books/topics-in-thoracic-surgery/surgical-management-of-primary-upper-limb-hyperhidrosis-a-review
http://www.intechopen.com/books/topics-in-thoracic-surgery/surgical-management-of-primary-upper-limb-hyperhidrosis-a-review
Monday, June 25, 2012
Thursday, June 21, 2012
compensatory sweating is extremely common and often worse than the original problem
Endoscopic thoracic sympathectomy is useful only when all other treatments fail and then should be considered only with caution as compensatory sweating is extremely common and often worse than the original problem.
BMJ 2009;338:b1166 doi:10.1136/bmj.b1166
BMJ 2009;338:b1166 doi:10.1136/bmj.b1166
Tuesday, June 19, 2012
Monday, June 18, 2012
Saturday, June 16, 2012
The Dangers of ETS Surgery for Excessive Sweating
If you have an excessive sweating problem, you may have heard of endoscopic sympathectomy (ETS) surgery. If you are considering this option - Don't!
This surgery can have severe complications and, in spite of the promises, could leave you in a worse situation than you currently face. Some people have experienced more sweating after the operation than before.
That's right - more sweating. Doesn't sound like a good solution to the problem of excessive sweating, does it? Okay, you have problems with excessive sweating, which can be embarrassing and uncomfortable. You want a solution. That's fair enough. However, ETS Surgery is NOT the solution.
http://howardboon.hubpages.com/hub/The-Dangers-of-ETS-Surgery-for-Excessive-Sweating
This surgery can have severe complications and, in spite of the promises, could leave you in a worse situation than you currently face. Some people have experienced more sweating after the operation than before.
That's right - more sweating. Doesn't sound like a good solution to the problem of excessive sweating, does it? Okay, you have problems with excessive sweating, which can be embarrassing and uncomfortable. You want a solution. That's fair enough. However, ETS Surgery is NOT the solution.
http://howardboon.hubpages.com/hub/The-Dangers-of-ETS-Surgery-for-Excessive-Sweating
Tuesday, June 12, 2012
dynamic cerebral autoregulation is altered by ganglion blockade
We measured arterial pressure and cerebral blood flow (CBF) velocity in 12 healthy subjects (aged 29+/-6 years) before and after ganglion blockade with trimethaphan. CBF velocity was measured in the middle cerebral artery using transcranial Doppler. The magnitude of spontaneous changes in mean blood pressure and CBF velocity were quantified by spectral analysis. The transfer function gain, phase, and coherence between these variables were estimated to quantify dynamic cerebral autoregulation. After ganglion blockade, systolic and pulse pressure decreased significantly by 13% and 26%, respectively. CBF velocity decreased by 6% (P <0.05). In the very low frequency range (0.02 to 0.07 Hz), mean blood pressure variability decreased significantly (by 82%), while CBF velocity variability persisted. Thus, transfer function gain increased by 81%. In addition, the phase lead of CBF velocity to arterial pressure diminished. These changes in transfer function gain and phase persisted despite restoration of arterial pressure by infusion of phenylephrine and normalization of mean blood pressure variability by oscillatory lower body negative pressure.
Conclusions-: These data suggest that dynamic cerebral autoregulation is altered by ganglion blockade. We speculate that autonomic neural control of the cerebral circulation is tonically active and likely plays a significant role in the regulation of beat-to-beat CBF in humans.
Circulation. 106(14):1814-1820, October 1, 2002.
http://www.problemsinanes.com/pt/re/dyslipidaemia/abstract.00003017-200210010-00017.htm;jsessionid=PX6phQHYFG5PD1p2DMS1cJLvG1TbtLLLH0bfJT6vKJgLLx1zn0Xf!1816077220!181195629!8091!-1?nav=reference
Conclusions-: These data suggest that dynamic cerebral autoregulation is altered by ganglion blockade. We speculate that autonomic neural control of the cerebral circulation is tonically active and likely plays a significant role in the regulation of beat-to-beat CBF in humans.
Circulation. 106(14):1814-1820, October 1, 2002.
http://www.problemsinanes.com/pt/re/dyslipidaemia/abstract.00003017-200210010-00017.htm;jsessionid=PX6phQHYFG5PD1p2DMS1cJLvG1TbtLLLH0bfJT6vKJgLLx1zn0Xf!1816077220!181195629!8091!-1?nav=reference
Sunday, June 10, 2012
Saturday, June 9, 2012
Horner syndrome, pneumothorax, hemothorax, asymmetry of results, intercostal neuralgia, causalgia, hypoesthesia, incomplete results, paresthesia in the anterolateral abdominal wall, dyspareunia
The complications and side effects are very significant, such as irreversible compensatory sweating (20% to 50%), low satisfaction with results, Claude-Bernard-Horner syndrome, pneumothorax, hemothorax, asymmetry of results, intercostal neuralgia, causalgia, incomplete results, and anesthetic complications11-13.
Retroperitoneoscopic lumbar sympathectomy (video-assisted): this technique is effective in the treatment of isolated or persistent plantar hyperhidrosis (compensatory after thoracic sympathectomy). The treatment consists of removing the nerves of the sympathetic chain located in the abdomen, in the anterolateral portion of the lumbar vertebrae. It requires hospitalization and is carried out under general anesthesia. It may lead to complications such as lesions of structures adjacent to the sympathetic chain, light abdominal distension, neuralgia, and causalgia as well as hypoesthesia in the thighs and groin, limitation of leg movement,
paresthesia in the anterolateral abdominal wall, change in libido, dyspareunia, pulmonary thromboembolism, hemorrhages, arrhythmias, and cardiac decompensation, amongst others. It definitively eliminates plantar hyperhidrosis14,15.
http://www.scielo.br/scielo.php?pid=S1983-51752011000400008&script=sci_arttext&tlng=en#end
Retroperitoneoscopic lumbar sympathectomy (video-assisted): this technique is effective in the treatment of isolated or persistent plantar hyperhidrosis (compensatory after thoracic sympathectomy). The treatment consists of removing the nerves of the sympathetic chain located in the abdomen, in the anterolateral portion of the lumbar vertebrae. It requires hospitalization and is carried out under general anesthesia. It may lead to complications such as lesions of structures adjacent to the sympathetic chain, light abdominal distension, neuralgia, and causalgia as well as hypoesthesia in the thighs and groin, limitation of leg movement,
paresthesia in the anterolateral abdominal wall, change in libido, dyspareunia, pulmonary thromboembolism, hemorrhages, arrhythmias, and cardiac decompensation, amongst others. It definitively eliminates plantar hyperhidrosis14,15.
http://www.scielo.br/scielo.php?pid=S1983-51752011000400008&script=sci_arttext&tlng=en#end
Vasodilation; Vasomotor Disturbances
Complex regional pain syndromes (CRPS) are characterized by vascular disturbances primary affecting the microcirculation in the distal part of the involved extremity. In the acute stage inhibited sympathetic vasoconstriction and exaggerated neurogenic inflammation driven by central and peripheral mechanisms, respectively, seem to be the major pathophysiological mechanisms inducing vasodilation. During the chronic course of the disease as well as early in some patients vasoconstriction dominates the clinical picture induced by changes in the microcirculation itself such as endothelial dysfunction or vascular hyperreactivity, whereas sympathetic vasoconstrictor activity returns and neurogenic inflammation is less severe. It can be suggested that the interaction between different mechanisms underlying vasomotor disturbances as well as the severity of each single mechanism in the individual patient have a great impact on the variety of the overall clinical picture in CRPS. Irrespective of the underlying pathophysiology, measurements of skin temperature differences between the affected and the contralateral extremity can serve as a diagnostic tool in CRPS, in particular when sensitivity and specificity is increased by considering dynamic alterations in skin temperature asymmetries.
http://onlinelibrary.wiley.com/doi/10.1111/j.1526-4637.2010.00914.x/abstract
- After traumatic injury (65%)
- Infection (4%)
- Prior inflammation (2%)
- No clear cause (10%)
A review stated that women are predominantly affected, by a factor of 3,5 and a genetic predisposition has also been theorized.
The disease affects all ages, though most cases are between 50 and 70 years old, and it is generally believed to occur mainly in caucasian and Japanese people.[4]
- Autonomic and trophic disorders:
http://onlinelibrary.wiley.com/doi/10.1111/j.1526-4637.2010.00914.x/abstract
Epidemiology /Etiology
CRPS is found to result:[1]- After traumatic injury (65%)
- 1-2% of all fractures result in CRPS
- Largest risk of CRPS for fractures of the wrist
- Infection (4%)
- Prior inflammation (2%)
- No clear cause (10%)
A review stated that women are predominantly affected, by a factor of 3,5 and a genetic predisposition has also been theorized.
The disease affects all ages, though most cases are between 50 and 70 years old, and it is generally believed to occur mainly in caucasian and Japanese people.[4]
Characteristics/Clinical Presentation
The following symptoms have been found in literature:[5]- Autonomic and trophic disorders:
- Distal Edema in 80% of the patients
- Skin temperature changes at the affected body part in 80% of the patients, initially warmer and in 40% of patients gradually cools down until colder in comparison to the rest of the body as the disease progresses. Another review mentioned that 30% of the patients start off from the primarily cold stage.3
- In 40% of the patients skin at the affected body part starts showing redness, but becomes pale or livid in later stages
- In 55% altered sweating takes place, with hyperhydrosis being more common than hypohydrosis.
- Hair and nail growth possibly increase in early stages
- Atrophy of skin and muscles in later stages, as well as contractures may severely restrict movement
- Spontaneous pain occurs in 75%, usually burning dragging or stinging
- 68% felt in deep structures
- 32% felt in skin
- In 77% pain shows fluctuating intensity, lesser proportion shows shooting pain
- Pain can be increased by orthostasis, anxiety, exercise or temperature changes.
- In many cases, pain is more pronounced at night
- Sensory gain (Mechanical hyperalgesia, allodynia, ...) or sensory loss (hypaesthesia, hypalgesia, …) may be present.
- Motor weakness
- Severe impairment of complex movements
- Impairment of range of motion, initially by concomitant edema, later by contractures and fibroses
- Neglect like symptoms have been found in some patiënts, described as the body part in question feeling foreign.
- Enhanced physiological tremor in around 50%
- Myoclonus or dystonia, especially in type II CRPS
Wednesday, June 6, 2012
Sympathectomy involves division of adrenergic, cholinergic and sensory fibers which elaborate adrenergic substances during the process of regulating viscera
http://pharmrev.aspetjournals.org/content/18/1/611.full.pdf+html
Tuesday, June 5, 2012
effect of bilateral cervical sympathetic ganglionectomy on the architecture of pial arteries
The influence of the cranial sympathetic nerves on the architecture of pial arteries in normo- and hypertension was examined. For this purpose the effect of bilateral superior cervical ganglionectomy was evaluated in normotensive rats (WKY) and stroke-prone spontaneously hypertensive rats (SHRSP). The operations were performed at the age of 1 wk, which is just prior to the onset of ganglionic transmission. The length of the inner media contour was measured and the media cross-sectional area was determined planimetrically, with computerized digitalization of projected photographic images of transversely sectioned pial arteries. Four wk after sympathectomy there was a 20% reduction in media cross-sectional area and a consequent reduction in the ratio between media area and calculated luminal radius in the major pial arteries at the base of the brain in WKY but not in SHRSP. Conversely, in small pial arteries linear regression analysis showed that in WKY subjected to ganglionectomy the relationship between media cross-sectional area and luminal radius was significantly larger in arteries with a radius less than 21 microns compared to untreated WKY. No such effect was seen in the corresponding SHRSP vessels. In addition, the cross-sectional area of the internal elastic membrane (IEM) in the basilar arteries of WKY was measured by means of a computerized image-analysing system. Mean cross-sectional area of the IEM was approximately 45% larger following SE than in control animals. The present findings propose a 'trophic' role for the sympathetic perivascular nerves in large pial arteries of the rat. The increased media-radius ratio in the small pial arteries of the WKY following sympathectomy might reflect a compensatory hypertrophy due to reduced protection from the larger arteries against the pressure load. The inability to detect any morphometrically measurable effect of the sympathectomy in the cerebral arteries of SHRSP is probably explained by a marked growth-stimulating effect of the high pressure load in these animals.
http://www.ncbi.nlm.nih.gov/pubmed/7701941
http://www.ncbi.nlm.nih.gov/pubmed/7701941
Postural Hypotension and Postural Dizziness
The subjects were 204 consecutive non–insulin-dependent patients with diabetes and 408 age- and sex-matched nondiabetic control subjects who underwent physical examinations for preventive reasons at the National Cheng Kung University Hospital between October 1992 and September 1994. Subjects were excluded from the study for sympathectomy, anemia, thyroid disorder, pregnancy, chronic alcohol use, and/or use of anti-Parkinson drugs, narcotics, sedatives, antipsychotic agents, or antidepressants within 2 weeks of the study. The subjects with diabetes included 114 men and 90 women with a mean age ± SD of 57.9 ± 10.5 years. The nondiabetic control subjects were 228 men and 180 women with a mean age ± SD of 57.1 ± 9.5 years.
Postural Hypotension and Postural Dizziness in Patients With Non–Insulin-Dependent Diabetes
Jin-Shang Wu, MD; Feng-Hwa Lu, MD; Yi-Ching Yang, MD; Chih-Jen Chang, MD
[+] Author Affiliations
Arch Intern Med. 1999;159(12):1350-1356. doi:10-1001/pubs.Arch Intern Med.-ISSN-0003-9926-159-12-ioi80679
Postural Hypotension and Postural Dizziness in Patients With Non–Insulin-Dependent Diabetes
Jin-Shang Wu, MD; Feng-Hwa Lu, MD; Yi-Ching Yang, MD; Chih-Jen Chang, MD
[+] Author Affiliations
Arch Intern Med. 1999;159(12):1350-1356. doi:10-1001/pubs.Arch Intern Med.-ISSN-0003-9926-159-12-ioi80679
Monday, June 4, 2012
Bilateral lumbar sympathectomies carry a risk of impotence
Contraindications. Prior contralateral sympathectomy, significant cardiovascular disease, or autonomic nervous system insufficiency.
Post-operative course. Mild-moderate post-operative pain, usually lasting less than 2 weeks.
Results. Sympathetic blocks and sympathectomies may provide significant relief in 60% of patients who undergo them (19-23). The mechanism on which this relief is based is open to question. There may be a significant placebo effect influencing the response to sympathetic blocks (18, 19). Mean time to pain recurrence following sympathectomy is six months (23).
Benefits. Several months of sympatholysis from a safe, repeatable, outpatient procedure, which doesn't cause local fibrosis, rendering subsequent retroperitoneal surgery difficult.
Risks. There are various risks associated with sympathectomy. These risks are minimized through the use of CT imaging, careful needle placement, and utilizing RF instead of chemical neurolysis.
The major risks of radiologically guided sympathectomies include pnemothorax, inadvertent damage to the genitofemoral nerve in the lumbar area, and inadvertent root trauma. Transient hypotension may follow sympathetic blocks and sympathectomies. Bilateral cervical sympathectomies should be avoided because of the destruction of cardioaccelerator tone. Bilateral lumbar sympathectomies carry a risk of impotence.
http://www.hiesiger.com/physicians/physicianrfl.html
Post-operative course. Mild-moderate post-operative pain, usually lasting less than 2 weeks.
Results. Sympathetic blocks and sympathectomies may provide significant relief in 60% of patients who undergo them (19-23). The mechanism on which this relief is based is open to question. There may be a significant placebo effect influencing the response to sympathetic blocks (18, 19). Mean time to pain recurrence following sympathectomy is six months (23).
Benefits. Several months of sympatholysis from a safe, repeatable, outpatient procedure, which doesn't cause local fibrosis, rendering subsequent retroperitoneal surgery difficult.
Risks. There are various risks associated with sympathectomy. These risks are minimized through the use of CT imaging, careful needle placement, and utilizing RF instead of chemical neurolysis.
The major risks of radiologically guided sympathectomies include pnemothorax, inadvertent damage to the genitofemoral nerve in the lumbar area, and inadvertent root trauma. Transient hypotension may follow sympathetic blocks and sympathectomies. Bilateral cervical sympathectomies should be avoided because of the destruction of cardioaccelerator tone. Bilateral lumbar sympathectomies carry a risk of impotence.
http://www.hiesiger.com/physicians/physicianrfl.html
Causes of orthostatic hypotension - surgical sympathectomy
Causes of orthostatic hypotension (modified from Simon et al9).
Hypovolemia or hemorrhage Addison’s disease Drug-induced hypotension • Antidepressants • Antihypertensives • Bromocriptine • Diuretics • Levodopa • Monoamine oxidase (MOA) inhibitors • Nitroglycerin • Phenothiazines Polyneuropathies • Myeloid neuropathy • Diabetic neuropathy • Guillain-Barre syndrome • Porphyric neuropathy • Vincristine neuropathy Other neurologic disorders • Idiopathic orthostatic hypotension • Multiple sclerosis • Parkinsonism • Posterior fossa tumor • Shy-Drager syndrome • Spinal cord injury with paraplegia • Surgical sympathectomy • Syringomyelia • Syringobulbia • Tabes dorsales (syphilis) • Wernicke’s encephalopathy Cardiovascular disorders Prolonged bed rest or immobilization
http://www.scribd.com/doc/15030687/Dizziness-Classification-and-Pathophysiology
Hypovolemia or hemorrhage Addison’s disease Drug-induced hypotension • Antidepressants • Antihypertensives • Bromocriptine • Diuretics • Levodopa • Monoamine oxidase (MOA) inhibitors • Nitroglycerin • Phenothiazines Polyneuropathies • Myeloid neuropathy • Diabetic neuropathy • Guillain-Barre syndrome • Porphyric neuropathy • Vincristine neuropathy Other neurologic disorders • Idiopathic orthostatic hypotension • Multiple sclerosis • Parkinsonism • Posterior fossa tumor • Shy-Drager syndrome • Spinal cord injury with paraplegia • Surgical sympathectomy • Syringomyelia • Syringobulbia • Tabes dorsales (syphilis) • Wernicke’s encephalopathy Cardiovascular disorders Prolonged bed rest or immobilization
http://www.scribd.com/doc/15030687/Dizziness-Classification-and-Pathophysiology
Tuesday, May 29, 2012
significant fall in left circumflex coronary flow was proportional to the decline in external heart work due to sympathectomy
http://www.springerlink.com/content/k2n6j4555g16x773/
sympathectomy affects the heart, sweating, and circulation
heart rate was significantly reduced at rest (14%), at sub-maximal exercise (12.3%), and at peak exercise (5.7%), together with a significant increase in oxygen pulse (11.8, 12.7, and 7.8%, respectively). The rate pressure product (RPP) was also significantly reduced following the surgical procedure at all three study stages, while all other physiological variables measured remained unchanged. It is suggested that thoracic-sympathetic denervation affects the heart, sweating, and circulation of the respective denervated region
Eur J Appl Physiol. 2008 Sep;104(1):79-86. Epub 2008 Jun 10.
Eur J Appl Physiol. 2008 Sep;104(1):79-86. Epub 2008 Jun 10.
Monday, May 28, 2012
Post-sympathectomy neuralgia is a severe complication since pain can be permanent, severe, and incapacitating
http://www.springerlink.com/content/q04711t06j164206/
Sunday, May 27, 2012
Possible surgical complications of sympathectomy may include
- Horner's syndrome
- Infection
- Hematoma
- Bleeding
- Postsympathectomy neuralgia
- Pleurotomy
- Pleural effusion
- Phrenic nerve injury
- Subclavian artery injury
- Adverse reaction to anesthesia
- Collapsed lung
"ETS has proved moderately successful in treating hyperhidrosis, although the operation does carry a high risk of complications. "
Other complications of ETS include:
http://www.knowsley.nhs.uk/health-a-to-z/h/hyperhidrosis-excessive-sweating/
- sweating on the face and neck after eating food (gustatory sweating),
- inflammation of the nose (rhinitis), and
- air becoming trapped between the layers of the lung (pneumothorax) which can cause chest pain and breathing difficulties (although this usually resolves itself without the need for treatment).
- Horner's syndrome, a condition that causes drooping of the eyelids, and
- damage to the phrenic nerve (a nerve that is used to help in breathing).
http://www.knowsley.nhs.uk/health-a-to-z/h/hyperhidrosis-excessive-sweating/
Saturday, May 26, 2012
75% pneumothorax expected after sympathectomy
A small insignificant pneumothorax can be expected after ETS in about 75% of cases [15], which gets spontaneously absorbed, usually within 24 h.
Comparing T2 and T2–T3 ablation in thoracoscopic sympathectomy for palmar hyperhidrosis: a randomized control trial
A. N. Katara, J. P. Domino, W.-K. Cheah, J. B. So, C. Ning, D. Lomanto
Minimally Invasive Surgical Centre, Department of General Surgery, National University Hospital, 5 Lower Kent Ridge Road, Singapore, 119074
Received: 13 October 2006/Accepted: 2 November 2006
http://medicine.nus.edu.sg/medsur/research_publications_2007.html
Permanent side effects included compensatory sweating in 67.4%, gustatory sweating in 50.7% and Horner's trias in 2.5%. However, patient satisfaction declined over time, although only 1.5% recurred. This left only 66.7% satisfied, and a 26.7% partially satisfied. Compensatory and gustatory sweating were the most frequently stated reasons for dissatisfaction. Individuals operated for axillary hyperhidrosis without palmar involvement were significantly less satisfied (33.3% and 46.2%, respectively).
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1234291/
Comparing T2 and T2–T3 ablation in thoracoscopic sympathectomy for palmar hyperhidrosis: a randomized control trial
A. N. Katara, J. P. Domino, W.-K. Cheah, J. B. So, C. Ning, D. Lomanto
Minimally Invasive Surgical Centre, Department of General Surgery, National University Hospital, 5 Lower Kent Ridge Road, Singapore, 119074
Received: 13 October 2006/Accepted: 2 November 2006
http://medicine.nus.edu.sg/medsur/research_publications_2007.html
Permanent side effects included compensatory sweating in 67.4%, gustatory sweating in 50.7% and Horner's trias in 2.5%. However, patient satisfaction declined over time, although only 1.5% recurred. This left only 66.7% satisfied, and a 26.7% partially satisfied. Compensatory and gustatory sweating were the most frequently stated reasons for dissatisfaction. Individuals operated for axillary hyperhidrosis without palmar involvement were significantly less satisfied (33.3% and 46.2%, respectively).
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1234291/
Monday, May 21, 2012
Depending on the series and the duration of follow-up, the success rate of sympathectomy varies from 12% to 97%
http://www.ispub.com/journal/the-internet-journal-of-pain-symptom-control-and-palliative-care/volume-2-number-1/complex-regional-pain-syndrome-a-clinical-review.html
Sunday, May 20, 2012
Sympathectomy has been discredited in this condition
Vasospastic conditions
Raynaud’s syndrome
http://surgeryonline.wordpress.com/category/arterial-disorders/
Drug warning - Karvezide, AVAPRO HCT - 'you must tell your doctor if you have had sympathectomy'
Tell your doctor if:
* you have had a sympathectomy
* you have been taking diuretics
*you have a history of allergy or asthma
www.racgp.org.au/cmi/swckarvz.pdf
* you have had a sympathectomy
* you have been taking diuretics
*you have a history of allergy or asthma
www.racgp.org.au/cmi/swckarvz.pdf
2. Before you start to take AVAPRO HCT
Tell your doctor if:- you suffer from any medical conditions especially-
- kidney problems, or have had a kidney transplant or dialysis
- heart problems
- liver problems, or have had liver problems in the past
- diabetes
- gout or have had gout in the past
- lupus erythematosus
- high or low levels of potassium or sodium or other electrolytes in your blood
- primary aldosteronism - you are strictly restricting your salt intake
- you are lactose intolerant or have had any allergies to any other medicine or any other substances, such as foods, preservatives or dyes.
- have had a sympathectomy
- you have been taking diuretics
- you have a history of allergy or asthma
Thursday, May 17, 2012
Use of stellate ganglion block for the treatment of psychiatric and behavioral disorders
The present invention is directed to a method for the treatment of a patient suffering from psychiatric and behavioral disorders, including post partum depression, post traumatic stress disorder, compulsive smoking, attention deficit hyperactivity disorder, gambling addiction, comprising the step of administering a stellate ganglion block to the patient to alleviate the symptoms. The stellate ganglion block may be followed by a sympathectomy to provide permanent relief.
http://www.freepatentsonline.com/y2007/0135871.html
Kind Code: A1
Friday, May 11, 2012
Number of sympathectomies is on the increase in Australia - the power of medical advertising
years 2000 - 2001:
Total: 1034
years 2001-2002:
Total: 1575
years 2002 - 2003
Total: 1228
years 2003 - 2004
Total: 1193
years 2004 - 2005
Total: 1483
years 2005 - 2006
Total:1358
years 2006 - 2007
Total: 972
years 2007 - 2008
Total: 850
years 2008 - 2009
Total: 891
years 2009 - 2010
Total: 1083
source: aihw.gov.au
Total: 1034
years 2001-2002:
Total: 1575
years 2002 - 2003
Total: 1228
years 2003 - 2004
Total: 1193
years 2004 - 2005
Total: 1483
years 2005 - 2006
Total:1358
years 2006 - 2007
Total: 972
years 2007 - 2008
Total: 850
years 2008 - 2009
Total: 891
years 2009 - 2010
Total: 1083
source: aihw.gov.au
Wednesday, May 9, 2012
Iatrogenic harlequin syndrome resulting from sympathectomy
Postgrad Med J 2003;79:278 doi:10.1136/pmj.79.931.278
A 29 year old man with severe facial hyperhidrosis underwent an uncomplicated right thoracoscopic sympathectomy. Before operating on his left side, a starch-iodine preparation was applied to his face in order to demarcate residual sudomotor function. The preparation becomes blue on exposure to moisture, thereby representing residual sweat gland activity.
Figure 1 demonstrates that sympathetic innervation to the face is strictly unilateral, and nerve fibres do not appear to cross the midline. This is essentially an iatrogenic variation of the harlequin syndrome,2 which usually results from interruption of post-ganglionic sympathetic fibres secondary to malignant invasion.
His facial hyperhidrosis was completely treated once the contralateral sympathectomy was performed.
Monday, May 7, 2012
T3 sympathectomy leads to subclinical pupillary dysfunction with a tendency for miosis
We found statistically significant differences (P < 0.001) between the preoperative P/I ratio [0.40 mm (standard deviation, SD 0.07 mm)] and the postoperative basal ratio [0.33 (SD 0.05)] at 24 h. The P/I ratio at 24 h increased from 0.33 to 0.36 (SD 0.09), a nonsignificant increase (P = 0.45), after instillation of medicated eye drops. No differences were observed between the preoperative [0.40 (SD 0.07)] and 1-month basal values [0.38 (SD 0.07)], and instillation of apraclonidine no longer induced a hypersensitivity response.
http://www.ncbi.nlm.nih.gov/pubmed/22044979
CONCLUSIONS:
T3 sympathectomy leads to subclinical pupillary dysfunction with a tendency for miosis, even though this impairment is not generally evident on standard physical examination or reported by patients. This subclinical dysfunction may be caused by injury to an undefined group of presympathetic nerve cell axons in caudocranial direction that communicate with the cervical sympathetic ganglia and whose function is mydriatic pupillary innervation.http://www.ncbi.nlm.nih.gov/pubmed/22044979
Saturday, May 5, 2012
medical students need to realise how vulnerable they are to being seduced by the special privileges of their profession
More than 7% of all German physicians became members of the Nazi SS during World War II, compared with less than 1% of the general population. In so doing, these doctors willingly participated in genocide, something that should have been antithetical to the values of their chosen profession. The participation of physicians in torture and murder both before and after World War II is a disturbing legacy seldom discussed in medical school, and underrecognised in contemporary medicine. Is there something inherent in being a physician that promotes a transition from healer to murderer? With this historical background in mind, the author, a medical student, defines and reflects upon moral vulnerabilities still endemic to contemporary medical culture.
http://jme.bmj.com/content/early/2012/05/02/medethics-2011-100372.abstract
Alessandra Colaianni, of Johns Hopkins Medical School, asks the unsettling question: "Is there something inherent in being a physician that promotes a transition from healer to murderer?" Some recent situations in the United States suggest that this is possible: allegations of euthanasia in the wake of Hurricane Katrina, torture of Guantanamo detainees, and the participation of doctors in capital punishment. Colaianni suggests that there are illuminating parallels between medical training and the work of doctors in Auschwitz.
Socialisation and hierarchy: doctors are pressured to conform to group norms, often with techniques like "Sleep deprivation, heightened stress levels and fear of failure". Ambition: just as Nazi doctors participated in the T4 euthanasia program to advance their careers, today's doctors are pressured to succeed even at the risk of losing their integrity. Doctors have a "licence to sin" which can easily be perverted: some "actions are allowed when they are performed by physicians, but are the stuff of horror films and criminal cases when non-licensed personnel attempt them."
Detachment was also a characteristic of Nazi doctors. They could select prisoners by day and dine with their colleagues by night: "the medical profession requires unflappability in the face of things that others would consider disgusting, horrific, or otherwise overwhelming".
Colaianni concludes that medical students need to realise how vulnerable they are to being seduced by the special privileges of their profession. "It is for this reason that a solid grounding in principles of ethics, individualism and human rights is so crucial for physicians and others in positions of power or trust."
http://www.bioedge.org/index.php/bioethics/bioethics_article/10042
http://jme.bmj.com/content/early/2012/05/02/medethics-2011-100372.abstract
Alessandra Colaianni, of Johns Hopkins Medical School, asks the unsettling question: "Is there something inherent in being a physician that promotes a transition from healer to murderer?" Some recent situations in the United States suggest that this is possible: allegations of euthanasia in the wake of Hurricane Katrina, torture of Guantanamo detainees, and the participation of doctors in capital punishment. Colaianni suggests that there are illuminating parallels between medical training and the work of doctors in Auschwitz.
Socialisation and hierarchy: doctors are pressured to conform to group norms, often with techniques like "Sleep deprivation, heightened stress levels and fear of failure". Ambition: just as Nazi doctors participated in the T4 euthanasia program to advance their careers, today's doctors are pressured to succeed even at the risk of losing their integrity. Doctors have a "licence to sin" which can easily be perverted: some "actions are allowed when they are performed by physicians, but are the stuff of horror films and criminal cases when non-licensed personnel attempt them."
Detachment was also a characteristic of Nazi doctors. They could select prisoners by day and dine with their colleagues by night: "the medical profession requires unflappability in the face of things that others would consider disgusting, horrific, or otherwise overwhelming".
Colaianni concludes that medical students need to realise how vulnerable they are to being seduced by the special privileges of their profession. "It is for this reason that a solid grounding in principles of ethics, individualism and human rights is so crucial for physicians and others in positions of power or trust."
http://www.bioedge.org/index.php/bioethics/bioethics_article/10042
nerves that sent blood-pressure-raising flight-or-fight signals to the brain were cut
page 187:
It was a grueling operation called sympathectomy, in which the nerves that sent blood-pressure-raising flight-or-fight signals to the brain were cut...The nerve cutting scrambled signals to her circulatory system. She was cold on one side of her body and warm on the other.
It was a grueling operation called sympathectomy, in which the nerves that sent blood-pressure-raising flight-or-fight signals to the brain were cut...The nerve cutting scrambled signals to her circulatory system. She was cold on one side of her body and warm on the other.
The Happy Bottom Riding Club: The Life and Times of Pancho Barnes (Paperback)
by Lauren Kessler (Author)Thursday, May 3, 2012
The second thoracic sympathetic ganglion was most commonly located (50%) in the second intercostal space
Presence of the stellate ganglion was noted in 56 (84.8%) sides, and 6 (9.1%) sides showed a single large ganglion formed by the stellate and the second thoracic sympathetic ganglia. The second thoracic sympathetic ganglion was most commonly located (50%) in the second intercostal space. CONCLUSION: The anatomic variations of the intrathoracic nerve of Kuntz and the second thoracic
sympathetic ganglion were characterized in human cadavers.
J Thorac Cardiovasc Surg 2002 Mar;123(3):498-501
Chung IH, Oh CS, Koh KS, Kim HJ, Paik HC, Lee DY.
Wednesday, April 25, 2012
There are similarities between the delayed onset of the human pain state and the delayed rise in sensory peptides after sympathectomy
The effect of sympathectomy on the calcitonin gene-related peptide (CGRP) level in the rat primary trigeminal sensory neurone was investigated. Six weeks after bilateral removal of the superior cervical ganglion there was a 70% rise in the CGRP content of the iris and the pial arteries, a 34% rise in the concentration in the trigeminal ganglion but no change in the brainstem. The CGRP rise in both end organs suggests that this phenomenon may be common to all peripheral organs receiving combined sensory and sympathetic innervations. The lack of any rise in the brainstem CGRP content raises the possibility that this process spares central terminations. In contrast, the level of neuropeptide Y, a peptide mainly contained in sympathetic terminals, fell to 35% of control values in the iris and pial arteries whilst the trigeminal ganglion and brainstem concentrations remained unchanged. The possible relevance of these observations to the clinical syndrome of postsympathectomy pain (sympathalgia) is discussed. There are similarities between the delayed onset of the human pain state and the delayed rise in sensory peptides after sympathectomy.
http://www.ncbi.nlm.nih.gov/pubmed/3877546
http://www.ncbi.nlm.nih.gov/pubmed/3877546
Monday, April 23, 2012
Digital infrared thermal image after T2 sympathicotomy or T3 ramicotomy
(A) Clear cut change of skin temperature after a T2 sympathicotomy. (B) An even distribution of skin temperature after ramicotomy.
Gossot and colleagues [8] analyzed a group of T2, T3, T4 sympathectomy patients in comparison with a group of patients undergoing a T2, T3, T4 ramicotomy and they reported no statistical difference regarding the incidence of CS between the two groups studied (72.2% and 70.9%). However in terms of the severity of CS (embarrassing, disabling) causing inconveniences to daily life, they reported 27% and 13% incidences in these two groups, respectively. These findings suggest that by preserving the sympathetic trunk, it was possible to reduce the severity of CS.
The preganglionic fibers of the sympathetic nerve to the arm originate mostly from the spinal segments T3–T6 and the postganglionic fibers of the sympathetic nerve to the arm originate from T2 and, to a lesser extent, the T3 ganglia [9]. This implies that the division of preganglionic fibers (rami communicantes) reduces the extent of denervation of the sympathetic nerve as compared with the division of postganglionic fibers (sympathetic trunk) in the treatment of palmar hyperhidrosis. Sympathectomy or sympathicotomy is one of the procedures used to divide the sympathetic trunk. Sympathicotomy distinctively changes sympathetic nerve distribution in comparison with a ramicotomy. Figure 4A illustrates the clear-cut changes of skin temperature after a T2 sympathicotomy. However the overall sympathetic nerve distribution to the body is not markedly changed after a T3 ramicotomy because a T3 ramicotomy is a procedure that is used to divide one of the preganglionic fibers and to preserve the sympathetic trunk. Figure 4B illustrates an even distribution of skin temperature after T3 ramicotomy.
http://ats.ctsnetjournals.org/cgi/content/full/78/3/1052#FIG4
Sunday, April 22, 2012
Drionic effectively "...reduced sweating for up to 6 weeks..."
Clinical Studies
The following comments are from clinical studies which demonstrated the safety and effectiveness of Drionic:
- Efficacy of the Drionic unit in the treatment of hyperhidrosis. J Am Acad Dermatol 1987;16:828-832. "...the Drionic unit appears to have a definite place in the treatment of hyperhidrosis." Daniel L. Akins, M.D. John L. Meisenheimer, M.D. Richard L. Dobson, M.D., Professor & Chairman, Dept. of Dermatology From the Department of Dermatology, Medical University of South Carolina, Charleston, South Carolina
- A new device in the treatment of hyperhidrosis by iontophoresis. Cutis 1982;29:82-89. Drionic effectively "...reduced sweating for up to 6 weeks..." Further, the study concluded that "Because of its design, it has great potential for home use." CPT John L. Peterson, M.D. MAJ Sandra I. Read, M.D. COL Orlando G. Rodman, M.D. Chief, Dermatology Service From the Dermatology Service, Dept. of Medicine, Walter Reed Army Medical Center, Washington, DC
- Tap water iontophoresis in the treatment of hyperhidrosis. Int J Dermatol 26;1987:194-197. "Tap water iontophoresis is a recognized method of reducing sweat in various parts of the body. The Drionic device is a battery-operated method of inducing tap water iontophoresis. This simple device may be used at home and is effective in reducing hyperhidrosis for as long as 6 weeks." Mervyn L. Elgart, M.D., Professor & Chairman, Dept. of Dermatology Glenn Fuchs, M.D. From the Department of Dermatology, George Washington Univ. Medical Center, Washington, DC.
- Efficacy of the Drionic unit in the treatment of hyperhidrosis. JAm Acad Dermatol 16:828-832, Apr. 1987. Elgart ML, Fuchs G: Tap water iontophoresis in the treatment of hyperhidrosis. Int J Dermatol 26: 194-197, Apr. 1987. (old model)
Saturday, April 21, 2012
Informing the patient of the seriousness of the consequences before this operation is absolutely necessary
http://ats.ctsnetjournals.org/cgi/content/full/80/3/1160-a
Friday, April 20, 2012
the surgical 'cure' for hyperhidrosis can make the condition much worse
First, we object to the classification of excessive sweating and facial
blushing as diseases. While it is true that these conditions can be very
embarrassing, causing the afflicted to dislike or avoid social
situations, and this can indeed have a negative impact on the quality of
life, from a physiological point of view they are entirely harmless. We
believe that the recent “official” classification of these conditions
as diseases is borne not of medical accuracy, but rather out of a desire
to legitimize and justify the surgery in the eyes of both prospective
patients and their insurance carriers.
Second, and more importantly, we object to the procedure itself. Interrupting the sympathetic chain in the thoracic region (by whatever means) is proven to cause a litany of permanent physical and mental disabilities, including anhidrosis, lowered heart function, lowered mental function, diminished lung volume, loss of baroreflex, paralyzed blood vessels, dysfunctional thermoregulation, chronic pain, paresthesia, lowered alertness, decreased exercise capacity, lowered response to fear, thrills, and other strong emotions. Thousands of unsuspecting patients are having psychiatric surgery without consent, forever robbed of their strongest feelings.
And, infamously, ETS surgery can cause uncontrollable, clothes-drenching sweating from the nipple-line down. In other words, the “cure” for hyperhidrosis can actually cause WORSE hyperhidrosis. Some cure.
http://forums.randi.org/archive/index.php/t-77170.html
Second, and more importantly, we object to the procedure itself. Interrupting the sympathetic chain in the thoracic region (by whatever means) is proven to cause a litany of permanent physical and mental disabilities, including anhidrosis, lowered heart function, lowered mental function, diminished lung volume, loss of baroreflex, paralyzed blood vessels, dysfunctional thermoregulation, chronic pain, paresthesia, lowered alertness, decreased exercise capacity, lowered response to fear, thrills, and other strong emotions. Thousands of unsuspecting patients are having psychiatric surgery without consent, forever robbed of their strongest feelings.
And, infamously, ETS surgery can cause uncontrollable, clothes-drenching sweating from the nipple-line down. In other words, the “cure” for hyperhidrosis can actually cause WORSE hyperhidrosis. Some cure.
http://forums.randi.org/archive/index.php/t-77170.html
Sunday, April 15, 2012
pathological pain, such as occurs in response to peripheral nerve injury
http://www.ncbi.nlm.nih.gov/pubmed/17706291
Tuesday, April 10, 2012
most surgeons do not have a clear understanding of their short-term outcomes for the majority of procedures they perform
The public would probably be surprised to know that most surgeons do not have a clear understanding of their short-term outcomes for the majority of procedures they perform.
Of even greater concern is the lack of data on long-term outcomes associated with surgical interventions.
Many surgeons argue that they are too busy and do not have the time and resources to conduct this sort of follow-up. This is not entirely without foundation, but it does seem difficult to defend a stance that says “I will continue to work feverishly at the operations I do but not assess how successful my results are”.
Of even greater concern is the lack of data on long-term outcomes associated with surgical interventions.
Many surgeons argue that they are too busy and do not have the time and resources to conduct this sort of follow-up. This is not entirely without foundation, but it does seem difficult to defend a stance that says “I will continue to work feverishly at the operations I do but not assess how successful my results are”.
Guy Maddern (ASERNIP-s): No excuse for poor surgical outcomes
MJA INSIGHT, 8 August 2011
Sunday, April 8, 2012
CS is referred to as perilesional hyperhidrosis - the shifting narrative
Perilesional/Compensatory Hyperhidrosis
Central and/or peripheral denervation of large numbers of sweat glands produces increased sweat output in innervated glands, maximal in contiguous dermatomal regions, occurs in PAF, Ross syndrome, SCI and post-surgical sympathectomy. (p.555)Primer on the Autonomic Nervous System
Sympathectomy, ganglionopathies and myelopathies produce such pattern
Segmental Anhidrosis
This pattern occurs when a large, contiguous body area of sweat loss with sharply demarcated borders conforming to sympathetic or somatic dermatomes are present.
Sympathectomy, ganglionopathies and myelopathies produces such pattern. When borders are not well defined and anhidrosis not contiguous, a regional pattern is said to exist. Both postganglionic and preganglionic lesions may produce these distributions. (p.557)
This pattern occurs when a large, contiguous body area of sweat loss with sharply demarcated borders conforming to sympathetic or somatic dermatomes are present.
Sympathectomy, ganglionopathies and myelopathies produces such pattern. When borders are not well defined and anhidrosis not contiguous, a regional pattern is said to exist. Both postganglionic and preganglionic lesions may produce these distributions. (p.557)
Primer on the Autonomic Nervous System
edited by David Robertson, Italo Biaggioni, Geoffrey Burnstock, Phillip A. Low, Julian F.R. PatonDisorders of sweating - Iatrogenic causes: Surgical sympathectomy/sympathotomy
Wednesday, April 4, 2012
Sympathectomy useless, even detrimental
A number of surgical procedures have been developed, which, although well-intentioned, are found unfortunately by further study to prove useless, or even detrimental. It is believed at present that lumbar sympathetic ganglionectomy in the treatment of the post-thrombotic type of ulceration of the lower extremity should be placed in this category.
http://archsurg.ama-assn.org/cgi/content/summary/67/1/2
http://archsurg.ama-assn.org/cgi/content/summary/67/1/2
Sunday, April 1, 2012
reductions in heart rate variability are a predictor of sudden cardiac death, even in individuals without a prior history of cardiovascular disease
Research indicates that a highly variable heart rate increases your capacity to respond and adapt to life’s challenges.
In a sense, it makes your cardiovascular system more flexible. If you’re less able to switch to the rest system, you’re more likely to feel stressed because your body is indicating that there’s danger in the environment – even if there isn’t.
Research has shown that reductions in heart rate variability are a predictor of sudden cardiac death, even in individuals without a prior history of cardiovascular disease.
http://theconversation.edu.au/depression-can-break-your-heart-literally-1102
In a sense, it makes your cardiovascular system more flexible. If you’re less able to switch to the rest system, you’re more likely to feel stressed because your body is indicating that there’s danger in the environment – even if there isn’t.
Research has shown that reductions in heart rate variability are a predictor of sudden cardiac death, even in individuals without a prior history of cardiovascular disease.
http://theconversation.edu.au/depression-can-break-your-heart-literally-1102
Monday, March 26, 2012
between 44,000 and 98,000 people die in US hospitals each year as a result of preventable medical errors
http://www.iom.edu/Reports/1999/To-Err-is-Human-Building-A-Safer-Health-System.aspx
the medical profession is so trusted that its activities are rarely questioned
By Paul Komesaroff, Monash University; Ian Kerridge, University of Sydney, and Wendy Lipworth, University of New South Wales
https://theconversation.edu.au/big-debts-in-small-packages-the-dangers-of-pens-and-post-it-notes-4949
https://theconversation.edu.au/big-debts-in-small-packages-the-dangers-of-pens-and-post-it-notes-4949
Tuesday, March 20, 2012
hypoaesthesia in the bilateral axillar region after endoscopic thoracic sympathectomy for palmar hyperhidrosis
http://sciencelinks.jp/j-east/article/199920/000019992099A0655152.php
Monday, March 19, 2012
Heart Rate Variability before and after the Endoscopic Transthoracic Sympathectomy in Hyperhidrosis
The etiology of primary hyperhidrosis has been speculated as "unknown" hyperactivity of the sympathetic nervous system. In our clinic, we performed endoscopic transthoracic sympathectomy(ETS) for the treatment of hyperhidrosis. In this study, we studied the cardiac autonomic nervous function using heart rate variability(HRV) before and after ETS in 70 patients with hyperhidrosis, and compared with normal control. Before ETS, high frequency(HF) power was lower in hyperhidrosis than control group, however, there was no significant difference in LF/HF. After ETS, LF/HF decreased by 31%, and lower than control. No Severe cpomplications were occurred by ETS. In conclusion, on the cardiac autonomic nervous tone, hyperhidrosis patients had the relative dominance of the sympathetic nervous tone by suppression of the parasympathetic nervous tone. After ETS, the sympathetic nervous tone was suppressed. Clinical symptoms in hyperhidrosis patients were impoved by ETS. Although ETS affected the cardiac autonomic nervous tone, it was useful and safety method for hyperhidrosis.
http://sciencelinks.jp/j-east/article/200002/000020000299A0930354.php
http://sciencelinks.jp/j-east/article/200002/000020000299A0930354.php
Sunday, March 18, 2012
End advertising for cosmetic surgery
This week an unlikely coalition of British feminists and plastic surgeons called upon the British government to end advertising for cosmetic surgery. They say cosmetic surgery adverts serve to ‘‘recklessly trivialise’’ invasive procedures that carry ‘‘inherent health risks’’.
http://www.dailylife.com.au/news-and-views/dl-opinion/normalising-breast-surgery-20120316-1va6v.html
http://www.guardian.co.uk/lifeandstyle/2012/mar/14/cosmetic-surgery-advertising-ban
http://www.dailylife.com.au/news-and-views/dl-opinion/normalising-breast-surgery-20120316-1va6v.html
http://www.guardian.co.uk/lifeandstyle/2012/mar/14/cosmetic-surgery-advertising-ban
Friday, March 16, 2012
Persistent blushing as a side-effect of the surgery for blushing...
http://www.hyperhidrosis-usa.com/facial_blushing.html
Monday, March 12, 2012
It’s not unusual to hear people who have undergone sympathectomies describe themselves as feeling emotionally “colder” than before
It’s not unusual to hear people who have undergone sympathectomies describe themselves as feeling emotionally “colder” than before. Among psychologists and neurologists alike there is concern, but no evidence, that the procedure limits alertness and arousal as well as fear, and might affect memory, empathy and mental performance. Professor Ronald Rapee, the director of the Centre of Emotional Health at Sydney’s Macquarie University, says he’s counselled several people who complain of feeling “robot-like” in the long-term wake of the operation. “They’re happy they no longer blush, but they miss the highs and lows they used to feel.”
(John van Tiggelen, Good Weekend Magazine, The Age and the Sydney Morning Herald, 10th March 2012)
Full text of the article available here:
John van Tiggelen: RED ALERT
(John van Tiggelen, Good Weekend Magazine, The Age and the Sydney Morning Herald, 10th March 2012)
Full text of the article available here:
John van Tiggelen: RED ALERT
Saturday, March 10, 2012
our advice to patients must reflect the true potential outcomes
Dear Editor,
http://www.medicalhub.com.au/wa-news/letters/3217-palmar-hyperhidrosis-revisited
I refer to the article on palmar hyperhidrosis by Dr Sanjay Sharma (Managing palmar hyperhidrosis, March). I feel that the adverse effects [of thoracoscopic sympathectomy] are understated by my colleague. For example, compensatory hyperhidrosis is common, and can be disabling, leading to regret about the procedure in some patients (up to 51% in one review). Reversal of the procedure is difficult and requires sural nerve transplant if the sympathetic chain is removed.
The procedure can be effective and worthwhile, but our advice to patients must reflect the true potential outcomes.
Dr Ian Gilfillan, Cardiothoracic Surgeon http://www.medicalhub.com.au/wa-news/letters/3217-palmar-hyperhidrosis-revisited
Friday, March 9, 2012
post-sympathectomy neuralgia is frequent
Surgical sympathectomy has a long heritage for the treatment of peripheral vascular disease and various chronic pain problems.
Despite concerns expressed as long ago as 1942 about the efficacy of surgical sympathectomy for the management of non-cancer pain, the procedure was enthusiastically pursued for the management of reflex sympathetic dystrophy or complex regional pain syndrome (CRPS), migraine, dysmenorrhea, epilepsy, chronic pancreatitis, postherpetic neuralgia of the trigeminal nerve, postdiscectomy syndrome, and phantom limb pain. However, systematic reviews have found no tangible evidence supportive of sympathectomy for the management of neuropathic pain. Furthermore, postsympathectomy neuralgia is a common complaint with a reported incidence between 15% to 50%.
As surgery is often mentioned as a cause of CRPS, it is somewhat illogical to consider surgery as an effective treatment. Nonetheless, surgical sympathectomy has a long anecdotal history in the treatment of RSD, and more recently endoscopic and radiofrequency sympathectomy has been tried.
Bonica's Management of Pain,
Lippincott Williams & Wilkins, 2009 - 2064 pages
Friday, February 24, 2012
impairment of the CBF autoregulation after unilateral cervical sympathectomy
Although these findings argued against a neurogenic mechanism, James at al. (1969) reported impairment of autoregulation after unilateral cervical sympathectomy in the babbon. Gotoh et al. (1971/1972) observed impairment of autoregulation in patients with the Shy-Drager syndrome.
It was concluded that the autonomic nervous system plays an important role in the mechanism of autoregulation of CBF and that his mechanism is independent of the chemical control of the cerebral vessels. This was confirmed by direct observation of the pial vessels in cats, where separate sites of action in the vascular tree for autoregulation and chemical control were demonstrated; the autoregulatory reaction was located in pial arteries with a diameter larger than 50 μ, and the reaction to carbon dioxide in pial arteries of smaller diameter (Gotoh et al. 1975).
They concluded that the arteries operating in autoregulation were the larger ones with the dense innervation, while the smaller arteries with sparse innervation were involved in chemical control.
Coronna and Plum (1973) demonstrated the absence of CBF autoregulation in a patient with a Shy-Drager syndrome who had a postganglionic denervation.
It was concluded that the autonomic nervous system plays an important role in the mechanism of autoregulation of CBF and that his mechanism is independent of the chemical control of the cerebral vessels. This was confirmed by direct observation of the pial vessels in cats, where separate sites of action in the vascular tree for autoregulation and chemical control were demonstrated; the autoregulatory reaction was located in pial arteries with a diameter larger than 50 μ, and the reaction to carbon dioxide in pial arteries of smaller diameter (Gotoh et al. 1975).
They concluded that the arteries operating in autoregulation were the larger ones with the dense innervation, while the smaller arteries with sparse innervation were involved in chemical control.
Coronna and Plum (1973) demonstrated the absence of CBF autoregulation in a patient with a Shy-Drager syndrome who had a postganglionic denervation.
Gotoh et al (1979) subsequently showed that autoregulation in patients with this syndrome was impaired irrespective of the localization of the damage to the cervical sympathetic nervous system (preganglionic, central, postganglionic) as judged by the eye instillation test.
Handbook of Clinical Neurology,
Vascular Diseases, Part I by P. J. Vinken, G. W. Bruyn, H. L. Klawans, and J. F. Toole
Friday, February 17, 2012
HAZARDS ASSOCIATED WITH CERVICO-THORACIC SYMPATHECTOMY
The following is a case report of a healthy 18-year-old woman who had bilateral Cervico- Thoracic sympathectomy done in two stages for severe hyperhidrosis in the palms of her hands.
Two episodes of asystolic arrest occurred during the 2nd stage left Cervico-Thoracic sympathec- tomy.
Thirty-five minutes after starting the operation, as the surgeon was retracting and dissecting the upper thoracic chain,
the cardiac monitor showed sudden onset of sinus bradycardia. The pulse rate was 50 beats per minute. Atropine 1·2 mg was given intravenously but cardiac asystole occurred.
External cardiac compression was started and another dose of atropine 1· 2 mg was given, followed by adrenaline 1·0 mg but there was no response. Following a second dose of adrenaline 1·0 mg and sodium bicarbonate 100 mEq, the
heart restarted with a marked sinus tachycardia.
The cause of hyperhidrosis apparently originates from some poorly understood stimulation of the sympathetic nervous system (Cloward 1969), and in sensitive patients this may possibly lead to excessive vagal stimulation to counteract it, as illustrated by the bradycardia and asystolic reaction to the sudden removal of the sympathetic control, and by the high doses of sympathomimetic drugs necessary to recommence cardiac activity. Anatomically the heart is innervated by the cardiac plexus which consists of the cardiac nerves derived from the cervical and upper thoracic ganglia of the sympathetic trunk and branches of the vagus.The pacemaker of the heart, the sino-atrial node, is innervated by both the parasympathetic and sympathetic nerves (King and Coakley 1958). The ventricular muscle of the heart is supplied solely by the sympathetic nerves, and the larger branches of the coronary arteries are also predominantly innervated by sympathetics (Woollard 1926). These factors may also have a bearing on the hazard of a bilateral cervico- thoracic sympathectomy, which leaves the heart solely under vagal control. Usually, following
denervation, the heart will initiate its own impulse, without recourse to external agencies, but there may be a place for transvenous electrode cardiac pacing, if spontaneous initiationof impulse is delayed, or bradycardia is severe.
R. F. Y. ZEE*
Royal Perth Hospital, Perth
Anaesthesia and Intensive Care, Vol. V, No. 1, February, 1977, Australia
Two episodes of asystolic arrest occurred during the 2nd stage left Cervico-Thoracic sympathec- tomy.
Thirty-five minutes after starting the operation, as the surgeon was retracting and dissecting the upper thoracic chain,
the cardiac monitor showed sudden onset of sinus bradycardia. The pulse rate was 50 beats per minute. Atropine 1·2 mg was given intravenously but cardiac asystole occurred.
External cardiac compression was started and another dose of atropine 1· 2 mg was given, followed by adrenaline 1·0 mg but there was no response. Following a second dose of adrenaline 1·0 mg and sodium bicarbonate 100 mEq, the
heart restarted with a marked sinus tachycardia.
The cause of hyperhidrosis apparently originates from some poorly understood stimulation of the sympathetic nervous system (Cloward 1969), and in sensitive patients this may possibly lead to excessive vagal stimulation to counteract it, as illustrated by the bradycardia and asystolic reaction to the sudden removal of the sympathetic control, and by the high doses of sympathomimetic drugs necessary to recommence cardiac activity. Anatomically the heart is innervated by the cardiac plexus which consists of the cardiac nerves derived from the cervical and upper thoracic ganglia of the sympathetic trunk and branches of the vagus.The pacemaker of the heart, the sino-atrial node, is innervated by both the parasympathetic and sympathetic nerves (King and Coakley 1958). The ventricular muscle of the heart is supplied solely by the sympathetic nerves, and the larger branches of the coronary arteries are also predominantly innervated by sympathetics (Woollard 1926). These factors may also have a bearing on the hazard of a bilateral cervico- thoracic sympathectomy, which leaves the heart solely under vagal control. Usually, following
denervation, the heart will initiate its own impulse, without recourse to external agencies, but there may be a place for transvenous electrode cardiac pacing, if spontaneous initiationof impulse is delayed, or bradycardia is severe.
R. F. Y. ZEE*
Royal Perth Hospital, Perth
Anaesthesia and Intensive Care, Vol. V, No. 1, February, 1977, Australia
Wednesday, February 8, 2012
Many patients come initially to the surgeon and they want a permanent effective cure
http://www.southernvascular.com.au/html/procedures_sympathectomy.html
Monday, February 6, 2012
A statistically significant drop in the level of norepinephrine occurred in all assessed patients after sympathectomy - the 'lobotomy' effect
http://icvts.oxfordjournals.org/content/5/4/464.full
As a stress hormone, norepinephrine affects parts of the brain where attention and responding actions are controlled.
Along with epinephrine, norepinephrine also underlies the fight-or-flight response, directly increasing heart rate,
triggering the release of glucose from energy stores, and increasing blood flow to skeletal muscle.
Norepinephrine is also released from postganglionic neurons of the sympathetic nervous system, to transmit the
fight-or-flight response in each tissue respectively. The adrenal medulla can also be counted to such postganglionic
nerve cells, although they release norepinephrine into the blood.
Norepinephrine system
The noradrenergic neurons in the brain form a neurotransmitter system, that, when activated, exerts effects on large
areas of the brain. The effects are alertness and arousal, and influences on the reward system.
www.caam.rice.edu/~cox/wrap/norepinephrine.pdf
Thursday, February 2, 2012
"I think the surgeons may not be aware of the long term consequences of denervation"
Email response from Dr. Ahmet Hoke of John Hopkins School of Medicine, School of Neurology - Specifically I asked him his opinion on three things:
1. What was his opinion of ETS in terms of risks vs benefits
2. His opinion on why Thoracic surgeons would advertise a surgical reversal approach when, as he sees it, it would have a very low probability of success
3. His opinion on the Davinci Robot Reversal article regarding surgical reattachment of the sympathetic nerves
1. It all depends on the risk benefit analysis, for some patients yes it may make sense as not everyone develops as severe side effects.
2. I think the surgeons may not be aware of the long term consequences of denervation.
The paper you refer to is not a good model of what happens to the patients because they cut the nerve and immediately repaired it. In such immediate repairs, the ganglia does not loose it's neurons and can regenerate. A better model would be to cut the nerves, wait 6 months and then do the repair; I suspect the recovery would be a lot less.
Ahmet Hoke M.D., Ph.D. FRCPC
Professor of Neurology and Neuroscience
Director, Neuromuscular Division
Johns Hopkins School of Medicine
Department of Neurology
855 N. Wolfe St., Neurology 248
Baltimore, MD, 21205
USA
1. What was his opinion of ETS in terms of risks vs benefits
2. His opinion on why Thoracic surgeons would advertise a surgical reversal approach when, as he sees it, it would have a very low probability of success
3. His opinion on the Davinci Robot Reversal article regarding surgical reattachment of the sympathetic nerves
1. It all depends on the risk benefit analysis, for some patients yes it may make sense as not everyone develops as severe side effects.
2. I think the surgeons may not be aware of the long term consequences of denervation.
The paper you refer to is not a good model of what happens to the patients because they cut the nerve and immediately repaired it. In such immediate repairs, the ganglia does not loose it's neurons and can regenerate. A better model would be to cut the nerves, wait 6 months and then do the repair; I suspect the recovery would be a lot less.
Ahmet Hoke M.D., Ph.D. FRCPC
Professor of Neurology and Neuroscience
Director, Neuromuscular Division
Johns Hopkins School of Medicine
Department of Neurology
855 N. Wolfe St., Neurology 248
Baltimore, MD, 21205
USA
diabetic autonomic neuropathy has already sympathectomized the patient
This diabetic syndrome has been attributed to a lesion of the sympathetic nerve fibres which control sweat secretion [11] and follow the course of the peripheral nerves [12]. This affects the efferent branch of the reflex arch and is identical to that occurring distal to a surgical sympathectomy [13].
There was no difference found between the histological changes in the nerves of the spontaneous anhidrotic patients (Fig. 1) and those of the two previously sympathectomized patients.
A number of papers have been published which stressed [22-24] the high failure rate of sympathectomy operations in diabetics. We believe that the failure of the operation is due to the fact that diabetic autonomic neuropathy has already sympathectomized the patient. The results of the present study are compatible with this idea.
http://www.springerlink.com/content/v21h52461037653k/
There was no difference found between the histological changes in the nerves of the spontaneous anhidrotic patients (Fig. 1) and those of the two previously sympathectomized patients.
A number of papers have been published which stressed [22-24] the high failure rate of sympathectomy operations in diabetics. We believe that the failure of the operation is due to the fact that diabetic autonomic neuropathy has already sympathectomized the patient. The results of the present study are compatible with this idea.
http://www.springerlink.com/content/v21h52461037653k/
Tuesday, January 31, 2012
A dysesthetic syndrome can occur after sympathectomy
A dysesthetic syndrome can occur after sympathectomy; it usually is transient but sometimes can be persistent.
Eugenia-Daniela Hord, MD, Instructor, Departments of Anesthesia and Neurology, Massachusetts General Hospital Pain Center, Harvard Medical School
Eugenia-Daniela Hord, MD, Instructor, Departments of Anesthesia and Neurology, Massachusetts General Hospital Pain Center, Harvard Medical School
Surgical procedure advertised as 'reversible' is not reversible
a recent consensus statement by the Society of Thoracic Surgeons recommended that the clipping method should be considered irreversible as the clipped nerve might not be able to recover after the removal of clips [6].
Ann Thorac Surg 2011;91:1642-8.
Ann Thorac Surg 2011;91:1642-8.
Wednesday, December 28, 2011
sympathicotomy may cause a temporary impairment of the caudal-to-rostral hierarchy of thermoregulatory control and changes in microcirculation
Patients with palmar hyperhidrosis have been reported to have a much
more complex dysfunction of autonomic nervous system, involving compensatory high parasympathetic
activity as well as sympathetic overactivity (13, 14), suggesting that sympathicotomy initially induces a
sympathovagal imbalance with a parasympathetic predominance, and that this is restored on a
long-term basis (14). Therefore, thoracic sympathicotomy may cause a temporary impairment of the
caudal-to-rostral hierarchy of thermoregulatory control and changes in microcirculation. The reduction
of finger skin temperature on the non-denervated side may be due to either a decrease in the cross-
inhibitory effect or the abnormal control of the inhibitory fibers by the sudomotor center (6).
Vasoconstrictor neurons have been found to be largely under the inhibitory control of various afferent
input systems from the body surface, whereas sudomotor neurons are predominantly under excitatory
control (15). The basic neuronal network for this reciprocal organization is probably located in the spinal
level (15). Therefore, the reduction in the contralateral skin temperature may be explained by cross-
inhibitory control of various afferent in the spinal cord.
In particular, our study showed that, following bilateral T3 sympathicotomy, the skin temperatures on
the hands increased whereas the skin temperatures on the feet decreased. These findings suggest a
cross-inhibitory control between the upper and lower extremities. However, the pattern of skin
temperature reduction on the feet differed from that on the contralateral hand. The skin temperature on
the feet did not decrease after right T3 sympathicotomy but decreased significantly after bilateral T3
sympathicotomy.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2722005/
more complex dysfunction of autonomic nervous system, involving compensatory high parasympathetic
activity as well as sympathetic overactivity (13, 14), suggesting that sympathicotomy initially induces a
sympathovagal imbalance with a parasympathetic predominance, and that this is restored on a
long-term basis (14). Therefore, thoracic sympathicotomy may cause a temporary impairment of the
caudal-to-rostral hierarchy of thermoregulatory control and changes in microcirculation. The reduction
of finger skin temperature on the non-denervated side may be due to either a decrease in the cross-
inhibitory effect or the abnormal control of the inhibitory fibers by the sudomotor center (6).
Vasoconstrictor neurons have been found to be largely under the inhibitory control of various afferent
input systems from the body surface, whereas sudomotor neurons are predominantly under excitatory
control (15). The basic neuronal network for this reciprocal organization is probably located in the spinal
level (15). Therefore, the reduction in the contralateral skin temperature may be explained by cross-
inhibitory control of various afferent in the spinal cord.
In particular, our study showed that, following bilateral T3 sympathicotomy, the skin temperatures on
the hands increased whereas the skin temperatures on the feet decreased. These findings suggest a
cross-inhibitory control between the upper and lower extremities. However, the pattern of skin
temperature reduction on the feet differed from that on the contralateral hand. The skin temperature on
the feet did not decrease after right T3 sympathicotomy but decreased significantly after bilateral T3
sympathicotomy.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2722005/
Monday, December 19, 2011
significant impairment of the heart rate to workload relationship was consistently observed following sympathectomy
The aim of the present prospective study was to confirm that a significant impairment of the heart rate to workload relationship was consistently observed following unilateral and/or bilateral (sympathectomy) surgery. Eur J Cardiothorac Surg 2001;20:1095-1100 http://ejcts.ctsnetjourna...i/content/full/20/6/1095
Wednesday, December 7, 2011
Monday, November 28, 2011
sympathectomy results in a pronounced increase of cerebrospinal fluid production
Electrical stimulation of the sympathetic nerves, which originate in the superior cervical ganglia, induces as much as 30% reduction in the net rate of cerebrospinal fluid (CSF) production, while sympathectomy results in a pronounced increase, about 30% above control, in the CSF formation. There is strong reason to believe that the choroid plexus is under the influence of a considerable sympathetic inhibitory tone under steady-state conditions.
http://ukpmc.ac.uk/abstract/MED/6276421
http://ukpmc.ac.uk/abstract/MED/6276421
"Lumbar sympathectomy/Sympathectomy and Hydrocephalus sharing one common finding"
http://en.diagnosispro.com/disease_comparison-for/lumbar-sympathectomy-versus-hydrocephalus/16143-22570.html
DiagnosisPro is a medical expert system.[1] It provides exhaustive diagnostic possibilities for 11,000 diseases and 30,000 findings.[2] It is supposed to give the most appropriate differential however this is not always the case.[3] Between Oct 2008 and Oct 2009 the site averaged 61,000 visits per month. [4]
http://en.diagnosispro.com/disease_comparison-for/lumbar-sympathectomy-versus-hydrocephalus/16143-22570.html
Hydrocephalus also known as "water in the brain," is a medical condition in which there is an abnormal accumulation of cerebrospinal fluid (CSF)
http://en.wikipedia.org/wiki/Hydrocephalus
DiagnosisPro is a medical expert system.[1] It provides exhaustive diagnostic possibilities for 11,000 diseases and 30,000 findings.[2] It is supposed to give the most appropriate differential however this is not always the case.[3] Between Oct 2008 and Oct 2009 the site averaged 61,000 visits per month. [4]
http://en.diagnosispro.com/disease_comparison-for/lumbar-sympathectomy-versus-hydrocephalus/16143-22570.html
Hydrocephalus also known as "water in the brain," is a medical condition in which there is an abnormal accumulation of cerebrospinal fluid (CSF)
http://en.wikipedia.org/wiki/Hydrocephalus
Effect of ganglion blockade on cerebrospinal fluid norepinephrine
Prevention of ganglion blockade-induced hypotension using phenylephrine did not prevent the decrease in CSF NE caused by trimethaphan, and when phenylephrine was discontinued, the resulting hypotension was not associated with increases in CSF NE. The similar decreases in plasma NE and CSF NE during ganglionic blockade, and the abolition of reflexive increases in CSF NE during hypotension in ganglion-blocked subjects, cast doubt on the hypothesis that CSF NE indicates central noradrenergic tone and are consistent instead with at least partial derivation of CSF NE from postganglionic sympathetic nerve endings.
http://www.mendeley.com/research/effect-of-ganglion-blockade-on-cerebrospinal-fluid-norepinephrine/
http://www.mendeley.com/research/effect-of-ganglion-blockade-on-cerebrospinal-fluid-norepinephrine/
Sunday, November 27, 2011
Ischemic spinal cord injury has been reported after sympathectomy
Toole's Cerebrovascular Disorders
Cambridge University Press, 31/01/2010 - Medical - 408 pages
Thursday, November 24, 2011
Severe Bronchospasm Following Bilateral T2-T5 Sympathectomy
http://www.ispub.com/journal/the-internet-journal-of-anesthesiology/volume-12-number-2/severe-bronchospasm-following-bilateral-t2-t5-sympathectomy.html
isolated failure of sympathetic sudomotor activity
The main clinical features include symptoms of heat intolerance: feeling hot, flushed, dyspneic, light-headed, and weak when the ambient temperature is high or when exercising. Recent accounts of acquired idiopathic anhidrosis, however, have emphasized the heterogeneous features and sub-types of this condition.
Fitzpatrick's Dermatology In General Medicine, Seventh Edition: Two Volumes
Pub Date: NOV-07
Fitzpatrick's Dermatology In General Medicine, Seventh Edition: Two Volumes
Pub Date: NOV-07
Tuesday, November 22, 2011
The practice of sympathectomy for treating neuropathic pain is based on very weak evidence. Furthermore, complications of the procedure may be significant.
Cochrane Summariesbeta
Independent high-quality evidence for health care decision making
http://summaries.cochrane.org/CD002918/cervico-thoracic-or-lumbar-sympathectomy-for-neuropathic-pain
Saturday, November 19, 2011
Post sympathectomy syndrome is a poorly understood condition
Post sympathectomy syndrome is a poorly understood condition, which occurs in up to 50% of patients undergoing sympathectomy. This is proposed to be a complex neuropathic and central deafferentation and reafferentation sydnrome. This can occur anywhere from few days to weeks following chemical or surgical sympathectomy. This is characterized by deep, aching pain with superficial burning and hyperesthesia, which may or may not respond to narcotic analgesics. Tricyclic antidepressants may help to reduce the incidence of postsympathoctomy neuralgia. Phenytoin, Carbamazepine or Gabapentin may be useful to reduce spontaneous pain and allodynia. Mexiletine and I.V. lignocaine may help some patients. Occasionally invasive therapies like sympatheic block or more complete sympathectomy can also help.
Stellate ganglion block is one of the most frequently performed procedures in he practice of chronic pain. It can provide good diagnostic, therapeutic and prognostic value.
It can produce complete sympathectomy to the head and neck structures but only a partial sympathetic block of the upper extremity in some patients with variation in anatomy.
Stellate ganglion block is one of the most frequently performed procedures in he practice of chronic pain. It can provide good diagnostic, therapeutic and prognostic value.
It can produce complete sympathectomy to the head and neck structures but only a partial sympathetic block of the upper extremity in some patients with variation in anatomy.
Interventional Pain Management
DK. Baheti, Bombay Hospital
Jaypee Brothers Publishers, 2009
Friday, November 18, 2011
There is a fairly extensive literature on pain after lumbar sympathectomy
bja.oxfordjournals.org/content/87/1/88.full
Sympathectomy useless, even detrimental
A number of surgical procedures have been developed, which, although well-intentioned, are found unfortunately by further study to prove useless, or even detrimental. It is believed at present that lumbar sympathetic ganglionectomy in the treatment of the post-thrombotic type of ulceration of the lower extremity should be placed in this category.
http://archsurg.ama-assn.org/cgi/content/summary/67/1/2
http://archsurg.ama-assn.org/cgi/content/summary/67/1/2
Monday, November 14, 2011
Spinal Ischemic Stroke from complications of abdominal surgery, esp. sympathectomy
B. Arterial feeders (e.g. thoracic, intercostal, or cervical branch from subclavian or vertebral artery)
1) thromboembolic disease!
2) complications of abdominal surgery (esp. sympathectomy)
3) dural AV fistulas (between radicular arteries and veins outside dura mater) – cause venous
hypertension → characteristic dilated veins that course on spinal cord surface.
Viktor’s Notes℠ for the Neurosurgery Resident
Please visit website at www.NeurosurgeryResident.net
Updated: April 17, 2010
1) thromboembolic disease!
2) complications of abdominal surgery (esp. sympathectomy)
3) dural AV fistulas (between radicular arteries and veins outside dura mater) – cause venous
hypertension → characteristic dilated veins that course on spinal cord surface.
Viktor’s Notes℠ for the Neurosurgery Resident
Please visit website at www.NeurosurgeryResident.net
Updated: April 17, 2010
"Sympathectomy frequently interferes with ejaculation"
Kaplan & Sadock's synopsis of psychiatry:
behavioral sciences/clinical psychiatryLippincott Williams & Wilkins, 2007 - 1470 pages
Sunday, November 13, 2011
After peripheral nerve section the amount of GAL produced and present in sensory fibers proximal to the section is dramatically upregulated
Front Neuroendocrinol. 1992 Oct;13(4):319-43.
Galanin in sensory neurons in the spinal cord.
Department of Clinical Physiology, Karolinska Institute, Huddinge University Hospital, Sweden.
The distribution and physiological effects of the neuropeptide galanin (GAL) have been examined in the somatosensory system. GAL is normally present in a few sensory neurons that terminate in the dorsal horn of the spinal cord and it is colocalized with substance P and calcitonin gene-related peptide. After peripheral nerve section, but not dorsal root section, the amount of GAL produced and present in sensory fibers proximal to the section is dramatically upregulated. In parallel functional studies, we could demonstrate that exogenous GAL has a complex effect on the spinal cord reflex excitability, facilitatory at low doses and inhibitory at high doses. Furthermore, GAL inhibits the effect of excitatory neuropeptides physiologically released at the peripheral and central terminals of small diameter afferents that subserve a nociceptive function. After axotomy, the inhibitory effect of GAL is increased. We conclude that GAL may have an important role in the control of nervous impulses that underlie pain states that can occur after peripheral nerve injury.
http://www.ncbi.nlm.nih.gov/pubmed/1281124Increased expression of galanin in the rat superior cervical ganglion after pre- and postganglionic nerve lesions
http://www.ncbi.nlm.nih.gov/pubmed/7515354
Galanin is a neuropeptide encoded by the GAL gene,[1] that is widely expressed in the brain, spinal cord, and gut of humans as well as other mammals. Galanin signaling occurs through three G protein-coupled receptors.[2]
The functional role of galanin remains largely unknown; however, galanin is predominately involved in the modulation and inhibition of action potentials in neurons. Galanin has been implicated in many biologically diverse functions, including: nociception, waking and sleep regulation, cognition, feeding, regulation of mood, regulation of blood pressure, it also has roles in development as well as acting as a trophic factor.[3] Galanin is linked to a number of diseases including Alzheimer’s disease, epilepsy as well as depression, eating disorders and cancer.[4][5] Galanin appears to have neuroprotective activity as its biosynthesis is increased 2-10 fold upon axotomy in the peripheral nervous system as well as when seizure activity occurs in the brain. It may also promote neurogenesis.[2]
http://en.wikipedia.org/wiki/Galanin
Galanin is a neuropeptide encoded by the GAL gene,[1] that is widely expressed in the brain, spinal cord, and gut of humans as well as other mammals. Galanin signaling occurs through three G protein-coupled receptors.[2]
The functional role of galanin remains largely unknown; however, galanin is predominately involved in the modulation and inhibition of action potentials in neurons. Galanin has been implicated in many biologically diverse functions, including: nociception, waking and sleep regulation, cognition, feeding, regulation of mood, regulation of blood pressure, it also has roles in development as well as acting as a trophic factor.[3] Galanin is linked to a number of diseases including Alzheimer’s disease, epilepsy as well as depression, eating disorders and cancer.[4][5] Galanin appears to have neuroprotective activity as its biosynthesis is increased 2-10 fold upon axotomy in the peripheral nervous system as well as when seizure activity occurs in the brain. It may also promote neurogenesis.[2]
http://en.wikipedia.org/wiki/Galanin
Compensatory changes in contralateral sympathetic neurons of the superior cervical ganglion and in their terminals in the pineal gland following unilateral ganglionectomy
The sympathetic noradrenergic neurons of the rat superior cervical ganglia (SCGs) provide the major source of innervation to the pineal gland. The present study sought to determine if this sympathetic innervation can undergo collateral sprouting following partial denervation of the pineal by unilateral removal of the SCG (ganglionectomy), and whether such growth of axon terminals is associated with biochemical changes in the contralateral SCG. In the pineal gland following partial denervation, residual noradrenergic terminals underwent compensatory changes indicative of collateral sprouting, as evidenced by: a rapid reduction in tyrosine hydroxylase (TH) activity and in [3H]norepinephrine (NE) uptake, to about 50% of control by 2 days, which was followed by a gradual but sustained increase to levels of approximately 80% of control by 10 days and a reduction in the intensity and density but not in the distribution of fibers containing NE-induced fluorescence by 2 days, which was followed by a sustained increase. In the contralateral SCG, choline acetyltransferase (CAT) activity, a marker of cholinergic preganglionic terminals, was transiently increased to about 115% of control by 4 days and returned to control levels by 14 days after unilateral ganglionectomy; later, TH activity in noradrenergic cell bodies was gradually increased to about 140% of control by 10 days where it remained for up to 52 days. Unilteral ganglionectomy combined with decentralization of the contralateral SCG by preganglionic nerve cut prevented the compensatory changes in noradrenergic nerve terminals within the pineal.
http://www.ncbi.nlm.nih.gov/pubmed/2861259
http://www.ncbi.nlm.nih.gov/pubmed/2861259
Hypertrophy and neuron loss: structural changes in sheep SCG induced by unilateral sympathectomy
Interaction effects between time and ganglionectomy-induced changes were significant for SCG volume and mean perikaryal volume. These findings show that unilateral superior cervical ganglionectomy has profound effects on the contralateral ganglion. For future investigations, it would be interesting to examine the interaction between SCGs and their innervation targets after ganglionectomy. Is the ganglionectomy-induced imbalance between the sizes of innervation territories the milieu in which morphoquantitative changes, particularly changes in perikaryal volume and neuron number, occur? Mechanistically, how would those changes arise? Are there any grounds for believing in a ganglionectomy-triggered SCG cross-innervation and neuroplasticity?
http://www.ncbi.nlm.nih.gov/pubmed/21334426
http://www.ncbi.nlm.nih.gov/pubmed/21334426
Saturday, November 12, 2011
Retrograde Changes in the Nervous System Following Unilateral Sympathectomy
In consequence of right-sided smpathectomy at the level of C5 it was found that in the sheep the cervical sympathetic trunk contains nerve fibres which proceed from cells situated in the first four segments of the thoracic part of the spinal cord and in the stellate ganglion. These fibres are about 85 per cent of all fibres of the sympathetic trunk. The remaining 15 per cent proceed from nerve cells situated nasally of the anterior cervical ganglion.
http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0442.1967.tb00255.x/abstract
http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0442.1967.tb00255.x/abstract
Telaranta's patient commits suicide after elective surgery for sweaty hands
One of Dr. Telaranta’s patients who had made a complaint began to experience strong reactions of anxiety which did not go away even after corrective surgery. Later the patient committed suicide.
Surgery involving the clamping of sympathetic nerve trunks to prevent excessive perspiration and blushing appears to be of questionable value.
Complications have been reported, ranging from phantom perspiration to blood clots in the brain.
The Finnish Office for Health Care Technology Assessment (FinOHTA), which is part of the National Research and Development Centre for Welfare and Health (STAKES) recently conducted a survey on the various effects of hyperhidrosis surgery at the request of the Finnish Medical Association.
Finnish surgeon Timo Telaranta has performed about 2,000 such operations at private clinics in Helsinki and Oulu in the past ten years.
The National Authority for Medicolegal Affairs has issued three warnings to Telaranta and the Provincial Government of Southern Finland has issued one.
Many doctors have serious reservations about the idea of treating complaints such as excessive perspiration, blushing, and performance anxiety by severing people’s nerves.
http://www.hs.fi/english/article/1101979734791
Surgery involving the clamping of sympathetic nerve trunks to prevent excessive perspiration and blushing appears to be of questionable value.
Complications have been reported, ranging from phantom perspiration to blood clots in the brain.
The Finnish Office for Health Care Technology Assessment (FinOHTA), which is part of the National Research and Development Centre for Welfare and Health (STAKES) recently conducted a survey on the various effects of hyperhidrosis surgery at the request of the Finnish Medical Association.
Finnish surgeon Timo Telaranta has performed about 2,000 such operations at private clinics in Helsinki and Oulu in the past ten years.
The National Authority for Medicolegal Affairs has issued three warnings to Telaranta and the Provincial Government of Southern Finland has issued one.
Many doctors have serious reservations about the idea of treating complaints such as excessive perspiration, blushing, and performance anxiety by severing people’s nerves.
http://www.hs.fi/english/article/1101979734791
Friday, October 28, 2011
Patients with sympathectomy are not suitable controls for sleep study. Why?
Exclusions:
Patients with permanent pacemaker, non-sinus cardiac arrhythmias, peripheral vasculopathy or neuropathy, severe lung disease, status postbilateral cervical or thoracic sympathectomy, finger deformity that precludes adequate sensor application, using a-adrenergic receptor blockers, or alcohol or drug abuse during the last 3 years.
The clinic sleep laboratory of the Technion Sleep Medicine Centre, Israel
http://chestjournal.chestpubs.org/content/123/3/695.long
CHEST March 2003 vol. 123 no. 3 695-703
MSAC Application no 1130, Assessment Report
Patients with permanent pacemaker, non-sinus cardiac arrhythmias, peripheral vasculopathy or neuropathy, severe lung disease, status postbilateral cervical or thoracic sympathectomy, finger deformity that precludes adequate sensor application, using a-adrenergic receptor blockers, or alcohol or drug abuse during the last 3 years.
The clinic sleep laboratory of the Technion Sleep Medicine Centre, Israel
http://chestjournal.chestpubs.org/content/123/3/695.long
CHEST March 2003 vol. 123 no. 3 695-703
MSAC Application no 1130, Assessment Report
Thursday, October 20, 2011
The amount of compensatory sweating depends the amount of cell body reorganization in the spinal cord after surgery
The amount of compensatory sweating depends on the patient, the damage that the white rami communicans incurs, and the amount of cell body reorganization in the spinal cord after surgery.
Other potential complications include inadequate resection of the ganglia, gustatory sweating, pneumothorax, cardiac dysfunction, post-operative pain, and finally Horner’s syndrome secondary to resection of the stellate ganglion.
www.ubcmj.com/pdf/ubcmj_2_1_2010_24-29.pdf
Other potential complications include inadequate resection of the ganglia, gustatory sweating, pneumothorax, cardiac dysfunction, post-operative pain, and finally Horner’s syndrome secondary to resection of the stellate ganglion.
www.ubcmj.com/pdf/ubcmj_2_1_2010_24-29.pdf
ETS considered psychiatric surgery - says Dr Nagy
"ETS (sympathectomy) can alter many bodily functions, including sweating , heart rate , heart stroke volume , blood pressure , thyroid , baroreflex , lung volume , pupil dilation, skin temperature, goose bumps and other aspects of the autonomic nervous system . It can diminish the body's physical reaction to exercise and/or strong emotion, and thus is considered psychiatric surgery. In rare cases sexual function or digestion may be modified as well. "
http://www.lvhyperhidrosis.com/treatment.html
http://www.lvhyperhidrosis.com/treatment.html
Wednesday, October 19, 2011
MD admits stellate ganglion block impacts on the insular cortex of the brain and alters emotions
Dr. Lipov says, "What really intrigued me about Dr, DeWall's study was he showed Tylenol exerted this emotional effect by acting on the insular cortex of the brain. That's exactly the same area that's affected by a Stellate Ganglion Block.[4]" The specialist is also Director of Chronic Pain Research at Northwest Community Hospital in Arlington Heights.
http://www.medicalnewstoday.com/releases/227298.php
http://www.medicalnewstoday.com/releases/227298.php
Sunday, October 16, 2011
Individual cardiovascular response to different levels of sympathetic blockade varies widely, depending on the degree of sympathetic tone before the block
The cardiovascular responses to epidural anaesthesia are almost entirely due to the fact that the local anaesthetic injected into the epidural space not only blocks somatic, sensory and motor fibres, but also produces preganglionic sympathetic denervation.
Postganglionic sympathetic nerves play an important role in controlling cardiac function and vascular tone. The most important of the cardiovascular effects are related to blockade of vasoconstrictor fibres (below T4) with resulting dilatation of resistance and capacitance vessels and/or cardiac sympathetic fibres with loss of chronotropic and inotropic drive to the myocardium (T1-5) (Figure 1).
The cardiac sympathetic outflow emerges from C5 to T5 levels, with the main supply to the ventricles from T1 to T43. A significant part of the chronotropic and inotropic control of the heart is mediated through the upper four thoracic spinal segments.
Denervation of preganglionic cardiac accelerator fibres leaving the cord at T1-T5 results in minimal vasodilatory consequences. Changes however in heart rate, left ventricular function and myocardial oxygen demand may occur due to high thoracic epidural blockade and are discussed below.
The major determinant of heart rate is the balance between sympathetic and parasympathetic systems with the latter predominating. A high thoracic epidural anaesthesia (TEA) covering the cardiac segments (T1-T4) produces small but significant reductions in heart rate4-8. During cardiac sympathetic denervation, parasympathetic cardiovascular responses, including those involved in baroreflexes, may dominate.
It was suggested that the sympathetic control of heart rate modified the dominating parasympathetic tone, rather than functioning as an active cardiac accelerator. In this study there was no compensation for changes in preload;
therefore cardiopulmonary baroreceptors affected by changes in central volume secondary to peripheral vasodilatation or vasoconstriction might have altered arterial baroreceptor heart rate reflex as well.
High TEA added to general anaesthesia significantly decreased the cardiac acceleration in response to decreasing blood pressure, suggesting that baroreflex-mediated heart rate response to a decrease in arterial blood pressure depends on the integrity of the sympathetic nervous system. However general anaesthesia, in addition to high levels of epidural anaesthesia, may have modified the balance between sympathetic and parasympathetic tone as well.
By applying power spectral analysis, i.e., frequency analysis of electrocardiographic R-R interval, the individual components of the autonomic nervous system can be discerned and can be used as a sensitive indicator of sympathovagal interaction.
Individual cardiovascular response to different levels of sympathetic blockade varies widely, depending on the degree of sympathetic tone before the block.
Anaesth Intensive Care 2000; 28: 620-635
B. T. VEERING*, M. J. COUSINS†
Department of Anesthesiology, Leiden University Medical Center, Leiden, The Netherlands and Department of Anaesthesia and
Pain Management, University of Sydney, Royal North Shore Hospital, Sydney, New South Wales
Postganglionic sympathetic nerves play an important role in controlling cardiac function and vascular tone. The most important of the cardiovascular effects are related to blockade of vasoconstrictor fibres (below T4) with resulting dilatation of resistance and capacitance vessels and/or cardiac sympathetic fibres with loss of chronotropic and inotropic drive to the myocardium (T1-5) (Figure 1).
The cardiac sympathetic outflow emerges from C5 to T5 levels, with the main supply to the ventricles from T1 to T43. A significant part of the chronotropic and inotropic control of the heart is mediated through the upper four thoracic spinal segments.
Denervation of preganglionic cardiac accelerator fibres leaving the cord at T1-T5 results in minimal vasodilatory consequences. Changes however in heart rate, left ventricular function and myocardial oxygen demand may occur due to high thoracic epidural blockade and are discussed below.
The major determinant of heart rate is the balance between sympathetic and parasympathetic systems with the latter predominating. A high thoracic epidural anaesthesia (TEA) covering the cardiac segments (T1-T4) produces small but significant reductions in heart rate4-8. During cardiac sympathetic denervation, parasympathetic cardiovascular responses, including those involved in baroreflexes, may dominate.
It was suggested that the sympathetic control of heart rate modified the dominating parasympathetic tone, rather than functioning as an active cardiac accelerator. In this study there was no compensation for changes in preload;
therefore cardiopulmonary baroreceptors affected by changes in central volume secondary to peripheral vasodilatation or vasoconstriction might have altered arterial baroreceptor heart rate reflex as well.
High TEA added to general anaesthesia significantly decreased the cardiac acceleration in response to decreasing blood pressure, suggesting that baroreflex-mediated heart rate response to a decrease in arterial blood pressure depends on the integrity of the sympathetic nervous system. However general anaesthesia, in addition to high levels of epidural anaesthesia, may have modified the balance between sympathetic and parasympathetic tone as well.
By applying power spectral analysis, i.e., frequency analysis of electrocardiographic R-R interval, the individual components of the autonomic nervous system can be discerned and can be used as a sensitive indicator of sympathovagal interaction.
Individual cardiovascular response to different levels of sympathetic blockade varies widely, depending on the degree of sympathetic tone before the block.
Anaesth Intensive Care 2000; 28: 620-635
B. T. VEERING*, M. J. COUSINS†
Department of Anesthesiology, Leiden University Medical Center, Leiden, The Netherlands and Department of Anaesthesia and
Pain Management, University of Sydney, Royal North Shore Hospital, Sydney, New South Wales
diabetic autonomic neuropathy has already sympathectomized the patient
Although not specific, the symptoms suffered by diabetics from sweating disturbances are fairly typical [5]. Initially there is heat intolerance accompanied by hyperhidrosis of the upper half of the body, particularly affecting the face, neck, axillae and hands. It is of interest that these patients rarely perspire excessively below the umbilicus. This diabetic syndrome has been attributed to a lesion of the sympathetic nerve fibres which control sweat secretion [11] and follow the course of the peripheral nerves [12]. This affects the efferent branch of the reflex arch and is identical to that occurring distal to a surgical sympathectomy [13].
There was no difference found between the histological changes in the nerves of the spontaneous anhidrotic patients
(Fig. 1) and those of the two previously sympathectomized patients.
A number of papers have been published which stressed [22-24] the high failure rate of sympathectomy operations in diabetics. We believe that the failure of the operation is due to the fact that diabetic autonomic neuropathy has already sympathectomized the patient. The results of the present study are compatible with this idea.
http://www.springerlink.com/content/v21h52461037653k/
There was no difference found between the histological changes in the nerves of the spontaneous anhidrotic patients
(Fig. 1) and those of the two previously sympathectomized patients.
A number of papers have been published which stressed [22-24] the high failure rate of sympathectomy operations in diabetics. We believe that the failure of the operation is due to the fact that diabetic autonomic neuropathy has already sympathectomized the patient. The results of the present study are compatible with this idea.
http://www.springerlink.com/content/v21h52461037653k/
Sympathectomy decreased CD4+ T-cells in lymph nodes
Alterations in lymphocyte activity does not always correlate with changes in the proportions of T- or B-lymphocyte subsets. Sympathetic denervation leads to loss of an important regulatory mechanism in immune system physiology. This is apparently site specific in that both lymph node and spleen T-cell proliferative responses are reduced.
Article by Dr. Brian A. Smith
http://home.earthlink.net/~doctorsmith/hivandchiro.htm
Article by Dr. Brian A. Smith
http://home.earthlink.net/~doctorsmith/hivandchiro.htm
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