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

Friday, August 22, 2014

change in sympathetic nervous system activity after thoracic sympathectomy

The photoplethysmographic (PPG) signal, which measures cardiac-induced changes in tissue blood volume by light transmission measurements, shows spontaneous fluctuations. In this study, PPG was simultaneously measured in the right and left index fingers of 16 patients undergoing thoracic sympathectomy, and, from each PPG pulse, the amplitude of the pulse (AM) and its maximum (BL) were determined. The parameter AM/BL is proportional to the cardiac-induced blood volume increase, which depends on the arterial wall compliance. AM/BL increased after the thoracic sympathectomy treatment (for male patients, from 2.60±1.49% to 4.81±1.21%), as sympathetic denervation decreases arterial tonus in skin. The very low-frequency (VLF) fluctuations of BL or AM showed high correlation (0.90±0.11 and 0.92±0.07, respectively) between the right and left hands before the thoracic sympathectomy, and a significant decrease in the right-left correlation coefficient (to 0.54±0.22 and 0.76±0.20, respectively) after the operation. The standard deviation of the BL or AM VLF fluctuations also reduced after the treatment, indicating sympathetic mediation of the VLF PPG fluctuations. The study also shows that the analysis of the PPG signal and the VLF fluctuations of the PPG parameters enable the assessment of the change in sympathetic nervous system activity after thoracic sympathectomy.

Volume 39Issue 5pp 579-583
http://www.ncbi.nlm.nih.gov/pubmed/11712655

Saturday, August 9, 2014

Drawbacks of thoracoscopic sympathectomy | The BMJ

Drawbacks of thoracoscopic sympathectomy | The BMJ: "BMJ 2005; 330 doi: http://dx.doi.org/10.1136/bmj.330.7500.1127 (Published 12 May 2005)
Cite this as: BMJ 2005;330:1127



Side effects after thoracoscopic sympathectomy have been discussed
widely in Taiwan society in the past few months. Lots of people in Taiwan
suffer from hyperhidrosis palmaris. Thoracoscopic sympathectomy is covered
by our National Health Insurance, and yet patient billing for this
operation does not exceed US$ 60. This is why this operation is so popular
here (1). However, patients with serious compensatory sweating must change
clothes several times a day (some complain they change as often as 10
times a day), resulting in a serious impact on work and social
interaction. Patients suffering from such serious side effects in Taiwan
have formed a support group based on an Internet discussion forum to
request the government to take this problem seriously
(http://home.pchome.com.tw/family/vivi12175/). Since October 2004, The
Department of Health Executive, Yuan, Taiwan, has prohibited surgeons from
performing this operation on patients under 20 years of age. To our
knowledge, this type of Internet-based support group also exists in
England (http://www.noetsuk.com/), Sweden
(http://home.swipnet.se/sympatiska/index3.htm), Australia (http://www.ets-
sideeffects.netfirms.com/), Spain
(http://www.terra.es/personal8/hiperhidrosis/principal.htm) and Japan
(http://www.geocities.jp/etscontroversialop/index.html). Thoracoscopic
sympathectomy is a relatively safe and simple procedure, however, the side
effects are potentially devastating. All surgeons who do the operation and
individuals preparing to undergo this treatment should know this well.
1.Lin TS, Wang NP, Huang LC. Pitfalls and complication avoidance
associated with transthoracic endoscopic sympathectomy for primary
hyperhidrosis (analysis of 2200 cases). Int J Surg Investig 2001; 2: 377-
85."


An absence of afferent feedback concerning autonomically generated bodily states was associated with subtle impairments of emotional responses in PAF patients.


nature neuroscience • volume 4 no 2 • february 2001 

Neuroanatomical basis for first- and second-order representations of bodily states
H. D. Critchley1,2, C. J. Mathias2,3 and R. J. Dolan

Thursday, August 7, 2014

“In no other area than Sympathetic Surgery, disagreement, conflicting opinion, different definitions and misleading interpretations of the data exist"

8th ISSS Symposium New York, 2009: 

“In no other area than Sympathetic Surgery, disagreement, conflicting opinion, different definitions and misleading interpretations of the data exist. Mainly regarding surgical indications, the level and extent of the procedure and results evaluation”.

ATS Expert Consensus for the Surgical Treatment of Hyperhidrosis powerpoint presentation  – October 6, 2012, XVI Congreso Boliviana de Cirugia Cardiaca, Toracica y Vascular, Santa Cruz de la Sierra, Bolivia.


or:

The Effects of Thoracic Sympathotomy on Heart Rate Variability in Patients with Palmar Hyperhidrosis

Compared with preoperative variables, there was a significant increase in the number of adjacent normal R wave to R wave (R- R) intervals that differed by more than 50 ms, as percent of the total number of normal RR intervals (pNN50); root mean square difference, the square root of the mean of the sum of squared differences between adjacent normal RR intervals over the entire 24-hour recording; standard deviation of the average normal RR in- terval for all 5-minute segments of a 24-hour recording (SDANN) after thoracic sympathotomy. Low frequencies (LF, 0.04 to 0.15 Hz) decreased significantly.
Yonsei Med J 53(6):1081-1084, 2012

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3481380/pdf/ymj-53-1081.pdf 

"synaptic reorganization in the sympathetic chain or spinal cord after sympathotomy" - MAYO Clinic

"synaptic reorganization in the sympathetic chain or spinal cord after sympathotomy" - MAYO Clinic
http://www.mayoclinic.org/documents/mc5520-06pdf/DOC-20077566"


Wednesday, August 6, 2014

Patients with surgical sympathectomies have low plasma levels of DA and NE [49], whereas EPI:NE ratios are increased

Patients with surgical sympathectomies have low plasma levels of DA and NE [49], whereas EPI:NE ratios are increased (unpublished observations), suggesting decreased sympathetically mediated exocytosis and compensatory adrenomedullary activation.

Catecholamines 101, David S. Goldstein
Clin Auton Res (2010) 20:331–352

Monday, July 28, 2014

Inflammation in dorsal root ganglia after peripheral nerve injury: Effects of the sympathetic innervation

Following a peripheral nerve injury, a sterile inflammation develops in sympathetic and dorsal root ganglia (DRGs) with axons that project in the damaged nerve trunk. Macrophages and T-lymphocytes invade these gan- glia where they are believed to release cytokines that lead to hyperexcitability and ectopic discharge, possibly contributing to neuropathic pain. Here, we examined the role of the sympathetic innervation in the inflammation of L5 DRGs of Wistar rats following transection of the sciatic nerve, comparing the effects of specific surgical in- terventions 10–14 days prior to the nerve lesion with those of chronic administration of adrenoceptor antago- nists. Immunohistochemistry was used to define the invading immune cell populations 7 days after sciatic transection. Removal of sympathetic activity in the hind limb by transecting the preganglionic input to the rele- vant lumbar sympathetic ganglia (ipsi- or bilateral decentralization) or by ipsilateral removal of these ganglia with degeneration of postganglionic axons (denervation), caused less DRG inflammation than occurred after a sham sympathectomy. By contrast, denervation of the lymph node draining the lesion site potentiated T-cell in- flux. Systemic treatment with antagonists of α1-adrenoceptors (prazosin) or β-adrenoceptors (propranolol) led to opposite but unexpected effects on infiltration of DRGs after sciatic transection. Prazosin potentiated the influx of macrophages and CD4T-lymphocytes whereas propranolol tended to reduce immune cell invasion. These data are hard to reconcile with many in vitro studies in which catecholamines acting mainly via β2-adrenoceptors have inhibited the activation and proliferation of immune cells following an inflamma- tory challenge. 


Autonomic Neuroscience: Basic and Clinical 182 (2014) 108117 

Neuroscience Research Australia, Randwick, NSW 2031, and the University of New South Wales, Sydney, NSW 2052, Australia

Sunday, July 27, 2014

Functional 

and 

organic 

vascular 

wall 

changes 

after sympathectomy and 

partial 

nerve 

damage


Langenbecks  

Arch  

Klin  

Chir  

Ver  

Dtsch  

Z  

Chir.  

1959;;291:217-31. 

Sunday, July 20, 2014

"lowering of heart rate and blood pressure, decreased responsiveness of the cardiocirculatory system to emotional stimuli


"lowering of heart rate and blood pressure, decreased responsiveness of the cardiocirculatory system to emotional stimuli: it is an effect that is especially noticeable in patients operated on for erythrophobia and less evident in those operated for hyperhidrosis. It is almost always a welcome phenomenon, which contributes considerably to the feeling of tranquility and serenity that generally supersedes anxiety. Excessive reduction in blood pressure or heart rate may lead to a state of weakness and fatigue that may require removal of the clips in approx. 2%. This rare state of asthenia contrasts with the increased energy and vigor that most patients experience when they feel freed from overwhelming anxiety."    

"The neurovegetative nervous system is, however, very dynamic and tends to adapt continuously during lifetime to all environmental or organic changes and conditions. Therefore, it reacts very individually when a reflex circuit has been blocked. The resulting side effects cannot be predicted in detail, and though they in most patients are relatively mild or even absent, there is a small group of patients developing heavy side effects. Therefore, surgery should only be considered in carefully selected cases in whom non-invasive treatment has failed and in whom the detrimental consequences of erythrophobia regarding the psychosocial situation and the quality of life is such to justify more adverse side effects. It should also always be kept in mind that therapy can be ineffective and that, in the long term, 10-15% of patients do not consider themselves satisfied with the result of surgery. In any case, the author prefers the use of a potentially reversible surgical technique (ESB), instead of destructive techniques (cutting, coagulation, removal of ganglia)."  
http://www.chir.it/en_erythrophobia.php

Saturday, July 12, 2014

significant associations between heart rate and regional cerebral blood flow

 2012 Feb;36(2):747-56. doi: 10.1016/j.neubiorev.2011.11.009. Epub 2011 Dec 8.

A meta-analysis of heart rate variability and neuroimaging studies: implications for heart rate variability as a marker of stress and health.

The intimate connection between the brain and the heart was enunciated by Claude Bernard over 150 years ago. In our neurovisceral integration model we have tried to build on this pioneering work. In the present paper we further elaborate our model and update it with recent results. Specifically, we performed a meta-analysis of recent neuroimaging studies on the relationship between heart rate variability and regional cerebral blood flow. We identified a number of regions, including the amygdala and ventromedial prefrontal cortex, in which significant associations across studies were found. We further propose that the default response to uncertainty is the threat response and may be related to the well known negativity bias. Heart rate variability may provide an index of how strongly 'top-down' appraisals, mediated by cortical-subcortical pathways, shape brainstem activity and autonomic responses in the body. If the default response to uncertainty is the threat response, as we propose here, contextual information represented in 'appraisal' systems may be necessary to overcome this bias during daily life. Thus, HRV may serve as a proxy for 'vertical integration' of the brain mechanisms that guide flexible control over behavior with peripheral physiology, and as such provides an important window into understanding stress and health.
http://www.ncbi.nlm.nih.gov/pubmed/22178086

Wednesday, July 9, 2014

important relationship among cognitive performance, HRV, and prefrontal neural function

"These findings in total suggest an important relationship among cognitive performance, HRV, and prefrontal neural function that has important implications for both physical and mental health. Future studies are needed to determine exactly which executive functions are associated with individual differences in HRV in a wider range of situations and populations."

http://www.ncbi.nlm.nih.gov/pubmed/19424767

Many injuries to the nervous system are followed by incomplete recovery or even increasing disability over time

Many injuries to the nervous system are followed by incomplete recovery or even increasing disability over time. Some of these long term effects are due to the loss of access to growth factors called neurotrophins that provide essential support for adult nerve cells. We recently discovered that immune responses can be triggered by injury leading to inflammation around the damaged nerve cells. Control of inflammation may therefore allow the remaining nerve cells to survive until treatments that enable them to regenerate can be developed.
http://www.neura.edu.au/health/nerve-and-spinal-cord-injury

Monday, July 7, 2014

the pain is the result of the sympathectomy itself rather than the technique used

Post"sympathectomy neuralgia is a syndrome of pain in the thigh, often of a burning nature, 
which can occur after sympathectomy and typically lasts 2– 3 months. The incidence has 
been variously quoted as 12–35% after both open sympathectomy47 49 and percutaneous 
phenol sympathectomy.13 50 The fact that the incidence is so similar after open and 
percutaneous sympathectomy suggests that the problem is a result of the sympathectomy 
itself rather than the technique used to achieve it. In the past, some authors have blamed 
the spread of phenol from the sympathetic chain posteriorly to the spinal nerve roots for 
this pain syndrome. There has never been any evidence to support this claim, and the fact 
that open sympathectomy has the same incidence of post"sympathectomy neuralgia 
suggests that spread of phenol is not the cause. 
http://bja.oxfordjournals.org/content/87/1/88.full

Saturday, July 5, 2014

"Sympathectomy can enhance or suppress antibody production"

Neuropsychiatry - Google Books: Neuropsychiatry
 edited by Randolph B. Schiffer, Stephen M. Rao, Barry S. Fogel


The mechanisms by which sympathectomy leads to increased local bone loss is unknown

In vivo effects of surgical sympathectomy on intra... [Am J Otol. 1996] - PubMed - NCBI: "Am J Otol. 1996 Mar;17(2):343-6.
In vivo effects of surgical sympathectomy on intramembranous bone resorption.
Sherman BE1, Chole RA.
Author information
1Department of Otolaryngology--Head and Neck Surgery, School of Medicine, University of California, Davis, USA.
Abstract
Bone modeling and remodeling are highly regulated processes in the mammalian skeleton. The exact mechanism by which bone can be modeled at a local site with little or no effect at adjacent anatomic sites is unknown. Disruption of the control of modeling within the temporal bone may lead to various bone disease such as otosclerosis, osteogenesis imperfecta, Paget's disease of bone, fibrous dysplasia, or the erosion of bone associated with chronic otitis media. One possible mechanism for such delicate control may be related to the ubiquitous and rich sympathetic innervation of all periosteal surfaces. Previous studies have indicated that regional sympathectomy leads to qualitative alterations in localized bone modeling and remodeling. In this study, unilateral cervical sympathectomy resulted in significant increases in osteoclast surface and osteoclast number within the ipsilateral bulla of experimental animals. The mechanisms by which sympathectomy leads to increased local bone loss is unknown. Potential mechanisms include disinhibition of resorption, secondary to the elimination of periosteal sympathetics, as well as indirect vascular effects."



'via Blog this'

Friday, June 13, 2014

Chest wall paresthesia affects a significant but previously overlooked proportion of patients following sympathectomy

Paresthetic discomfort distinguishable from wound pain was described by 17 patients (50.0%). The most common descriptions were of ‘bloating’ (41.2%), ‘pins and needles’(35.3%), or ‘numbness’ (23.5%) in the chest wall. The paresthesia resolved in less than two months in 12 patients (70.6%), but was still felt for over 12 months in three patients (17.6%). Post-operative paresthesia and pain did not impact on patient satisfaction with the surgery, whereas compensatoryhyperhidrosis in 24 patients (70.6%) did (P=0.001). The rates and characteristics of the paresthesia following needlescopic VATS are similar to those observed after conventional VATS. Conclusions: Chest wall paresthesia affects a significant but previously overlooked proportion of patients following needlescopic VATS.



Eur J Cardiothorac Surg 2005;27:313-319"


Tuesday, June 10, 2014

The physiology of the sympathetic innervation of the limbs according to the ganglia and their location in correspondence with the ribs is highly variable

The Surgical Treatment of Hyperhidrosis - The Annals of Thoracic Surgery: "The physiology of the sympathetic innervation of the limbs according to the ganglia and their location in correspondence with the ribs is highly variable. Surgery performed by rib count is not anatomical, and rib count is often erroneous: according to Chou and colleagues [3], the estimated rib level was wrong in 5 of 114 patients. "



http://www.annalsthoracicsurgery.org/article/S0003-4975(11)02260-0/fulltext#bib3_internalLink

Monday, June 9, 2014

although producing no alterations in the thermal balance, does produce abnormalities in quantitative distribution of thermoregulatory sweating

JNS - Journal of Neurosurgery -: "The data demonstrate that the surgical removal of both the T-2 and the T-3 ganglia, although producing no alterations in the thermal balance, does produce abnormalities in quantitative distribution of thermoregulatory sweating in man."


the severity of post-sympathectomy (post-SE) dysfunction is unpredictable

The aim of this study was to identify retrospectively, lumbar sympathectomy (SE) using thermography (TG) and to evaluate clinically, the severity of post-sympathectomy (post-SE) dysfunction after anterior and lateral lumbar interbody fusion procedures (ALIF, XLIF).
METHODS:
Twenty eight patients with suspected SE were referred for TG to both legs. They completed our questionnaire on severity of difficulties after SE. We evaluated the ability of physical examinations to reveal the SE in contrast to TG and compared the symptoms (warmer leg and inhibited leg sweating) of SE with questionnaire responses as subjective measure and TG as objective measure.
RESULTS:
SE was diagnosed in 0.5% after ALIF at L5/S1, in 15% after ALIF at Th12-L5 and in 4% after XLIF at T12-L5. SE severely reduced the quality of life in two cases. The ability to distinguish differences in leg temperature by palpation after SE was found in 32%. All physical examinations together were insufficient for reliably disclosing SE. Subjective symptoms of SE were often false positive and proven SE by TG was often a clinically false negative.
CONCLUSION:
This is the first study to examine post-SE dysfunction objectivelya using TG after ALIF and XLIF, and the first to evaluate clinically, the severity of the post-SE syndrome. Before surgery we cannot foresee potentially poor SE results. For this reason, injury to the sympathetic chain during surgery must be avoided. The advantage of TG for identifying SE is its non-invasiveness and reliability.
http://www.ncbi.nlm.nih.gov/pubmed/24263213


Thursday, June 5, 2014

most of the existing literature is geared towards assessing only the effectiveness of the surgical sympathectomy

"Given the fact that most of the existing literature is geared towards a) assessing only the effectiveness of the surgical sympathectomy procedures, and b) publishing only studies with positive results, adverse effects and complications are not systematically reported but rather as a secondary outcome. It seems, therefore, highly likely that the complications as reported here, are truly underestimated.



The study indicates that surgical sympathectomy, irrespective of operative approach and indication, may be associated with many and potentially serious complications."



Are We Paying a High Price for Surgical Sympathectomy? A Systematic Literature Review of Late Complications

http://www.jpain.org/article/S1526-5900%2800%2944124-6/abstract


Sunday, June 1, 2014

33% of patients reported compensatory hyperhidrosis that was either 'severe' or 'incapacitating'

Endoscopic thoracic sympathectomy for primary hyperhidrosis of the...IPG487 Safety: "Compensatory hyperhidrosis was reported in 92% (416/453), 86% (1720/2000) and 74% (1265/1700) of patients in 3 case series. In 2 of these studies 33% (557/1700 and 150/453) of patients reported compensatory hyperhidrosis that was either 'severe' or 'incapacitating'."

http://www.nice.org.uk/guidance/ipg487/chapter/safety


Saturday, May 31, 2014

"He knows the procedure is controversial because of the unpredictability of side-effects"

Information about surgery for sweaty hands:  surgeon "knows the procedure is controversial because of the unpredictability of side-effects"



"Ferrar believes much of the controversy lies in surgeons, mainly in America, who perform the surgery on anyone who asks for it, rather than the severe end of the spectrum.
"In America there are so many that have been operated on when it hasn't been necessary, or the surgeon has given the patient false expectations, that there are support groups for people who've had complications or adverse effects. The people that come to me are almost self-selecting; they've tried everything else."
The youngest patient he has performed an endoscopic thoracic sympathectomy on was 8 years old, with most being in puberty (when the condition tends to arise). Or they are in their 20s when they are beginning relationships and jobs."



Publication info: Waikato Times [Hamilton, New Zealand] 07 Apr 2012: 22."


Thursday, May 29, 2014

Chest pain, chest hypersensitivity, arm pain, paraesthesias of the upper limb and the thoracic wall, and recurrent pain in the axillary region have all been described

"Chest pain, chest hypersensitivity, arm pain, paraesthesias of the upper limb and the thoracic wall, and recurrent pain in the axillary region have all been described. Intra-operative intrapleural analgesia using bupivacaine can help reduce postoperative pain. Using a 5 mm rather than 1cm post causes less postoperative discomfort, particularly in women with narrow intercostal spaces.

Complications in Vascular and Endovascular Surgery: How to avoid them and how to get out of trouble


Jonothan J Earnshaw, Michael Wyatt,

tfm Publishing Limited, Jan 1, 2012 - Medical - 318 pages"


Thursday, May 22, 2014

Sympathectomy is by no means a benign procedure, and sympathectomy for sweating can induce pain and allodynia

"Sympathectomy is by no means a benign procedure, and sympathectomy for sweating can induce pain and allodynia at the border zone which is sometimes associated with pronounced increase in sweating in that area." (p. 534) Surgical Disorders of the Peripheral Nerves by Rolfe Birch Springer, Jan 21, 2011 - Medical - 512 pages original article published in Ann R Coll Surg Engl 2002; 84:181-184"

Sunday, May 4, 2014

the autonomic nervous system varies in a unique, autonomous manner, and it is therefore difficult to assess changes in patients in a uniform manner

There are several reasons that stellate ganglion block affects the cardiovascular system. Stellate ganglion block will initially affect both the sympathetic and parasympathetic nervous systems based on the degree of block. The intensity of right stellate ganglion blockage of the sympathetic and parasympathetic nervous system will result in heart rate changes and altered activity of the sympathetic and parasympathetic nervous system. Efferent sympathetic innervation from the right stellate ganglion is primarily distributed over the sinus node of the heart, and the influence of the autonomic nervous system and left stellate ganglion block should be assessed. Further, results will be affected by the health status of participants.
Although efferent sympathetic nerves from the stellate ganglion are primarily distributed over the heart, efferent sympathetic fibers from the 2nd to 5th thoracic ganglia affect the heart as well. Accordingly, the autonomic nervous system of the heart is not completely dependent on the stellate ganglia. The influence of the autonomic nervous system cannot be excluded as well. It is worth noting that the mepivacaine in the present study was a lower dosage than those used in other studies. Finally, the autonomic nervous system varies in a unique, autonomous manner, and it is therefore difficult to assess changes in patients in a uniform manner or just through the application of one or two indicators. Future studies should examine diverse methods for the assessment of autonomic nervous system function.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2872892/

Thursday, May 1, 2014

peripheral sympathectomy causes a dramatic increase in NGF levels in the denervated organs

Increased Nerve Growth Factor Messenger RNA and Protein

Peripheral NGF mRNA and protein levels following
sympathectomy
It has been shown previously that peripheral sympathectomy
causes a dramatic increase in NGF levels in the denervated
organs
 (Yap et al., 1984; Kanakis et al., 1985; Korsching and
Thoenen, 1985).
Increased ,&Nerve Growth Factor Messenger RNA and Protein
Levels in Neonatal Rat Hippocampus Following Specific Cholinergic
Lesions
Scott R. Whittemore,” Lena Liirkfors,’ Ted Ebendal,’ Vicky R. Holets, 2,a Anders Ericsson, and HBkan Persson
Departments of Medical Genetics and’ Zoology, Uppsala University, S-751 23 Uppsala, Sweden, and *Department of
Histology, Karolinska Institute, S-104 01 Stockholm, Sweden

Sunday, April 27, 2014

Stratified analysis of clinical outcomes in ... [Ann Thorac Surg. 2008] - PubMed - NCBI

"Significant compensatory sweating in relation to the level(s) of sympathetic chain division occurred in T2 alone, 45%; T2 to T3, 30%; T3 to T4, 14%; T2 to T4, 38%; and more than three levels, 49%"



 2008 Feb;85(2):390-3;

http://www.ncbi.nlm.nih.gov/pubmed/18222231

Friday, April 25, 2014

our results indicate that the sympathetic innervation of cutaneous vessels is essential for the precise regulation of tail heat loss

"Neuroscience Letters. Mar2013, Vol. 537, p11-16. 6p."


Surprisingly, many patients experienced mild recurrent symptoms within the first year

Sympathicotomy for isolated facial blushing:... [Ann Thorac Surg. 2012] - PubMed - NCBI: "Mild recurrence of facial blushing occurred in 30% of patients within the first year. One patient experienced Horner's syndrome. Compensatory sweating occurred in 93% of patients, gustatory sweating 36%, and dry hands in 66%; 13% of patients regretted the operation despite thorough preoperative selection and information."


Thursday, April 24, 2014

Patients who undergo sympathotomy for hyperhidrosis will commonly report "clinically bothersome" compensatory hyperhidrosis.

 2014 Apr;147(4):1160-1163.e1. doi: 10.1016/j.jtcvs.2013.12.016. Epub 2014 Jan 2.

Sympathectomy causes wall thinning, elongation, convolution, and aneurysm formation

"Sympathectomy causes basilar artery enlargment, which is beneficial for maintaining cerebral blood flow; however, it also causes wall thinning, elongation, convolution, and aneurysm formation, which may be hazardous in stenoocclusive carotid artery disease. Sympathectomy can prevent new vessel formation and hyperthyrophic changes at the posterior circulation. Neovascularisation is not detected adequately in sympathectomised animals."



Acta Neurochirurgica156.5 (May 2014): 963-9.

Tuesday, April 22, 2014

"The custom of a majority is no guarantee of safety and is seldom a guide to best medical practice." in Legal Forum

Cameron`s claim that there has been only one death attributable to synchronous bilateral thoracoscopic sympathectomy is implausible. Surgeons and anaesthetists are reticent in publicizing such events and Civil Law Reports of settled cases are an inadequate measure of the current running total. The custom of a majority is no guarantee of safety and is seldom a guide to best medical practice.
Jack Collin,
Consultant Surgeon
Oxford
http://www.bmj.com/content/320/7244/1221?tab=responses

Saturday, April 12, 2014

the sympathetic fibers passing through the T2-3 ganglia play an important role in the elaboration or modulation of autonomic function elsewhere

The data indicate that the sympathetic fibers passing through the T2-3 ganglia play an important role in the elaboration or modulation of autonomic function elsewhere.

Journal of the Autonomic Nervous System
Volume 8, Issue 1, May 1983, Pages 33-43

This is the first study to examine post-SE (post-sympathectomy) dysfunction objectively

This is the first study to examine post-SE dysfunction objectively using TG after ALIF and XLIF, and the first to evaluate clinically, the severity of the post-SE syndrome. Before surgery we cannot foresee potentially poor SE results. For this reason, injury to the sympathetic chain during surgery must be avoided. The advantage of TG for identifying SE is its non-invasiveness and reliability.

The aim of this study was to identify retrospectively, lumbar sympathectomy (SE) using thermography (TG) and to evaluate clinically, the severity of post-sympathectomy (post-SE) dysfunction after anterior and lateral lumbar interbody fusion procedures (ALIF, XLIF).
http://www.ncbi.nlm.nih.gov/pubmed/24263213

Saturday, February 15, 2014

Inflammation in dorsal root ganglia after peripheral nerve injury: Effects of the sympathetic innervation

Following a peripheral nerve injury, a sterile inflammation develops in sympathetic and dorsal root ganglia (DRGs) with axons that project in the damaged nerve trunk. Macrophages and T-lymphocytes invade these ganglia where they are believed to release cytokines that lead to hyperexcitability and ectopic discharge, possibly contributing to neuropathic pain. Here, we examined the role of the sympathetic innervation in the inflammation of L5 DRGs of Wistar rats following transection of the sciatic nerve, comparing the effects of specific surgical interventions 10-14days prior to the nerve lesion with those of chronic administration of adrenoceptor antagonists. Immunohistochemistry was used to define the invading immune cell populations 7days after sciatic transection. Removal of sympathetic activity in the hind limb by transecting the preganglionic input to the relevant lumbar sympathetic ganglia (ipsi- or bilateral decentralization) or by ipsilateral removal of these ganglia with degeneration of postganglionic axons (denervation), caused less DRG inflammation than occurred after a sham sympathectomy. By contrast, denervation of the lymph node draining the lesion site potentiated T-cell influx. Systemic treatment with antagonists of α1-adrenoceptors (prazosin) or β-adrenoceptors (propranolol) led to opposite but unexpected effects on infiltration of DRGs after sciatic transection. Prazosin potentiated the influx of macrophages and CD4+ T-lymphocytes whereas propranolol tended to reduce immune cell invasion. These data are hard to reconcile with many in vitro studies in which catecholamines acting mainly via β2-adrenoceptors have inhibited the activation and proliferation of immune cells following an inflammatory challenge.
 2013 Dec 23.
http://www.ncbi.nlm.nih.gov/pubmed/24418114

Surgical sympathectomy is rarely performed and its use remains controversial

Although improved in some, persistent or recurrent symptoms were present in all patients after six months postoperatively. Increased sensitivity of digital vessels to circulating catecholamines, nerve fiber regeneration or incomplete sympathectomy have been postulated to lead to recurrence. Five patients developed Horner's syndrome postoperatively. A portion of the stellate ganglion was intentionally resected in 3 of the 5 patients.
http://www.ncbi.nlm.nih.gov/pubmed/8370999

Thursday, February 6, 2014

prolongation of the isometric (tension) period (TP) of the left ventricle occurred in the majority (72 per cent) of all cases after sympathectomy

The prolongation of the isometric (tension) period (TP) of the left ventricle which occurred in the majority (72 per cent) of all cases after unilateral or bilateral transthoracic sympathectomy (without or with unilateral or bilateral transthoracic splanchnicotomy) indicates a diminution of inotropic cardiac action. It can be assumed to correspond to the cholinergic (vagal) preponderance which results from a partial or complete sympathetic denervation of the heart. Reduction of the pulse pressure oc-

curred in 56 per cent of the cases, probably due to the same mechanism.

www.chestjournal.org/content/38/4/423.full.pdfby W RAAB - 1960

Wednesday, January 22, 2014

change in sympathetic nervous system activity after thoracic sympathectomy

The photoplethysmographic (PPG) signal, which measures cardiac-induced changes in tissue blood volume by light transmission measurements, shows spontaneous fluctuations. In this study, PPG was simultaneously measured in the right and left index fingers of 16 patients undergoing thoracic sympathectomy, and, from each PPG pulse, the amplitude of the pulse (AM) and its maximum (BL) were determined. The parameter AM/BL is proportional to the cardiac-induced blood volume increase, which depends on the arterial wall compliance. AM/BL increased after the thoracic sympathectomy treatment (for male patients, from 2.60±1.49% to 4.81±1.21%), as sympathetic denervation decreases arterial tonus in skin. The very low-frequency (VLF) fluctuations of BL or AM showed high correlation (0.90±0.11 and 0.92±0.07, respectively) between the right and left hands before the thoracic sympathectomy, and a significant decrease in the right-left correlation coefficient (to 0.54±0.22 and 0.76±0.20, respectively) after the operation. The standard deviation of the BL or AM VLF fluctuations also reduced after the treatment, indicating sympathetic mediation of the VLF PPG fluctuations. The study also shows that the analysis of the PPG signal and the VLF fluctuations of the PPG parameters enable the assessment of the change in sympathetic nervous system activity after thoracic sympathectomy.
Volume 39Issue 5pp 579-583
http://link.springer.com/article/10.1007%2FBF02345149

Sunday, January 19, 2014

The graph shows an overall shorter survival rate of sympathectomised rats

Results
                Graph 1 shows the survival rate in both sympathectomised and non sympathectomised rats after the administration of YA cells. The graph shows an overall shorter survival rate of sympathectomised rats. In both groups there is a steep decrease in survival after 15 days, causing the median survival rate (18 days) of both groups to overlap. On the other hand the net survival rate is increased in non sympathectomised rates by 6 days
References:
1.        Ewa Chelmicka – Szorc, Barry G. W. Arnason. Effect of 6-Hydroxydopamine on Tumor Growth. CANCER RESEARCH 1976, 36, 2382-2384.
2.        Boris Mravec, Neurobiológia chorôb periférnych tkanív, Bratislava, SAP 2008, 220 s.,  ISBN 978-80-8095-030-9
3.        Raju B, Haug SR, Ibrahim SO, Heyeraas KJ. Sympathectomy decreases size and invasiveness of tongue cancer in rats. Neuroscience. 2007;149(3):715-25.
4.        Mravec B ,Gidron Y,Hulin I. Neurobiology of cancer: Interactions between nervous, endocrine
and immune systems as a base for monitoring and modulating the tumorigenesis by the brain. Seminars in Cancer Biology 18 (2008) 150–163.
5.        Paul G. Green,Wilfrid Janig, Jon D. Levinel. Negative Feedback Neuroendocrine Control of Inflammatory Response in the Rat is Dependent on the Sympathetic Postganglionic Neuron. The Journal of Neuroscience, 1997, 17(8):3234 –3238
6.      Aparna A. Bhanushali , R. Raghunathan , Rajiv D. Kalraiya , Narendra G. Mehta. Cancer-related anemia in a rat model: α2-macroglobulin from Yoshida sarcoma shortens erythrocyte survival. European Journal of Haematology 2002. 68(1),42 - 48


The effect of sympathectomy on the growth of intraperitoneally administered Yoshida ascitic cells in rats
El-Hassoun Olia, Coauthors: Zuzana Valašková, Ivan Hulín
Supervisor: Boris Mravec
Institute of Pathophysiology, LF UK Bratislava
http://svoc.fmed.uniba.sk/abstrakty/48/36.html

Monday, December 16, 2013

Long-term sympathectomy induces sensory and parasympathetic fibres sprouting, and mast cell activation in the rat dura mater

Bergerot, AAubineau, P; (1998) Long-term sympathectomy induces sensory and parasympathetic fibres sprouting, and mast cell activation in the rat dura mater. EUR J NEUROSCI , 10 79 - 79. 

http://discovery.ucl.ac.uk/1330488/

Lewis rats are much more likely to develop autoimmune disorders after sympathectomy

Lewis rats are much more likely to develop autoimmune disorders after sympathectomy 
(Dimitrova and Felten, 1995). This finding suggests that if sympathetic regulation were impaired in a 
genetically predisposed individual, an autoimmune disease might develop.  
Betrayal by the Brain: The Neurologic Basis of Chronic Fatigue Syndrome, Fibromyalgia Syndrome and Related Neural Network Disorders  
by Jay A. Goldstein  

published by The Haworth Medical Press, 1996

Thursday, December 12, 2013

significant change after sympathectomy: reduced sympathetic and increased vagal tone

The HRV analysis showed a significant change of indices reflecting sympatho-vagal balance indicating significantly reduced sympathetic (LF) and increased vagal (HF, rMSSD) tone. These changes still persisted after 2 years. Global HRV increased over time with significant elevation of SDANN after 2 years. QT dispersion was significantly reduced 1 month after surgery and the dispersion was further diminished 2 years later.
http://www.sciencedirect.com/science/article/pii/S0167527399001011

Friday, December 6, 2013

"sympathectomy is a form of sensory neurectomy" (p.1500)

Bonica's Management of Pain

Front Cover
Scott FishmanJane BallantyneJames P. Rathmell
Lippincott Williams & Wilkins, 2010 - Medical - 1661 pages

Monday, November 25, 2013

sympathectomized arteries become more susceptible to lipid accumulation

Combined effect of cholesterol feeding and sympathectomy on the lipid content in rabbit aortas
Volume 37, Issue 4, December 1980, Pages 521–528

Sunday, November 24, 2013

Decreased HRV is predictive of adverse cardiovascular outcomes in a variety of disease states

Water immersion-induced skin wrinkling (WISW) is dependent on intact peripheral sympathetic function. WISW was hypothesized to reflect autonomic function in subjects with- out peripheral neuropathy. We prospectively studied 70 healthy subjects (aged 31 88 years, 63% females) without cardiovascular risk factors or neurological disease. All sub- jects underwent short-term heart rate variability (HRV) stud- ies. Time and frequency domain variables were derived in- cluding the HRV index. WISW was graded using a previously validated scale of 1–4 of which 18.6% of subjects exhibited grade 1 (minimal) WISW and 35.7% had grade 2 WISW. On multivariate analysis using the HRV index, WISW was inde- pendently related to height and the HRV index. We conclude that WISW is related to central autonomic function.


Although the mechanism is not fully understood, WISW is felt to be caused by passive diffusion of water across the stratum corneum into the sweat ducts, which in turn alters electrolyte balance, decreases membrane stabilization, increases sympathetic neural firing and stimulates vasoconstriction [1–3, 8].WISW is decreased in diabetic patients and in patients after cervical sympathectomy [4, 9].
Heart rate variability (HRV) is the beat-to-beat variation in cardiac cycle length due to autonomic influence on the sinus node. Decreased HRV is predictive of adverse cardiovascular outcomes in a variety of disease states[5]. The influence of the central nervous system activity on autonomic function suggests that HRV may be a useful prognostic indicator in patients with cerebrovascular events [6].


Cardiology 2010;116:247–250 DOI: 10.1159/000316043
Received: May 10, 2010
Accepted after revision: May 28, 2010 Published online: August 18, 2010

Wednesday, November 20, 2013

Removal of the clips from the sympathetic trunk does not provide resolution of compensatory sweating

Removal of the clips from the sympathetic trunk does not provide resolution of compensatory sweating in 1 year of observation. T6-9 block does not provide remedy for compensatory hyperhidrosis. Regional abdomino-lumbar iontophoresis seems to be very promising, but further research and followup are mandatory.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3458267/

Sunday, November 3, 2013

Natural bodily functioning does not include “purely autonomic” or “purely somatic” responses, just as it does not include ‘purely sympathetic” or “purely parasympathetic” responses



Langley initially expected to find afferent cell bodies in autonomic ganglia, with projections to other ganglia. He believed that activation of these “autonomic afferents” should lead to purely autonomic responses. However Langley’s own careful work demonstrated that there were no such neurons.

The fundamentally important point is that integrative processes responsible for the organization of visceral function occur principally within the central nervous system (brain and/or spinal cord). Both somatic and visceral afferents result in complex, brain mediated, responses that include somatic and visceral function. Autonomic motor activity can be generated by both somatic and visceral inputs to the CNS, and visceral inputs to the CNS initiate responses that are both somatic and autonomic. Natural bodily functioning does not include “purely autonomic” or “purely somatic” responses, just as it does not include ‘purely sympathetic” or “purely parasympathetic” responses.

Bill Blessing and Ian Gibbins (2008), Scholarpedia, 3(7):2787.
revision #46085 [link to/cite this article]

Curator: Dr. Bill Blessing, Centre for Neuroscience, Flinders University, Adelaide, AUSTRALIA

Thursday, October 31, 2013

electric stimulation of the sympathetic cord in the upper thoracic level on the middle cerebral artery blood flow velocity



The effect of electric stimulation of the sympathetic cord in the upper thoracic level on the middle cerebral artery blood flow velocity (V(MCA)) in humans was examined using transcranial Doppler sonography monitoring during surgery for palmar hyperhidrosis. Sympathetic stimulation resulted in marked and rapid increases Of V(MCA). The responses were preceded by prompt increases of mean arterial blood pressure (MABP) and heart rate (HR). Division of the sympathetic cord cranially or caudally to the stimulation site partially reduced the V(MCA), MABP and HR responses. Both these operations reduced sympathetic pathways to the heart as reflected by a decrease in HR and MABP. The integrity of the sympathetic pathway from the stimulation site through the superior cervical ganglion and the carotid plexus was not a prerequisite for a V(MCA) response. Our data suggest that the V(MCA) increase mainly results from stimulation of the heart and the cardiovascular system, resulting in marked increases of blood pressure and heart rate.

CEREBROVASCULAR DISEASES Volume: 2 Issue: 6 Pages: 359-364 Published: NOV-DEC 1992

Saturday, October 19, 2013

Postsympathectomy pain of such severity that parenteral narcotics afforded no relief

Fifty-six consecutive patients who subsequently underwent ninety-six lumbar sympathectomies were studied prospectively with regard to the development of postoperative pain. Pain after operation was observed in thirty-four extremities by twenty-five of the patients (35 per cent). It began abruptly an average of twelve days after operation and was often accentuated nocturnally. The pain was almost always described as a deep, dull ache and persisted two to three weeks before spontaneously remitting. Postsympathectomy pain of such severity that parenteral narcotics afforded no relief developed in two of these fifty-six patients and in nine additional patients. Treatment with carbamazepine produced dramatic reduction in the intensity of pain in seven of these nine patients within twenty-four hours after the institution of therapy. Two patients were given intravenous diphenylhydantoin and both experienced immediate relief of pain. The mechanisms of the syndrome and of the action of these drugs are uncertain.

Wednesday, October 9, 2013

A randomized placebo-controlled trial of oxybutynin for the initial treatment of palmar and axillary hyperhidrosis


Palmar and axillary hyperhidrosis improved in >70% of the patients, and 47.8% of those presented great improvement. Plantar hyperhidrosis improved in >90% of the patients. Most patients (65.2%) showed improvements in their quality of life. The side effects were minor, with dry mouth being the most frequent (47.8%).

Journal of Vascular SurgeryVolume 55, Issue 6June 2012Pages 1696-1700

40% affirmed they would ask for the operation if it were to be redone, 53% recurrence

At an average 12 years after surgery, 47% of patients were satisfied with the treatment results, 40% were disappointed. 
53% complaining about a decent to moderate recurrence of hand sweating and compensatory and gustatory sweating were observed in 9 (60%) and 5 (33%) patients, respectively. 
Interact CardioVasc Thorac Surg(1): 54-57.

Tuesday, October 8, 2013

Monday, October 7, 2013

During sympathectomy procedure we found a significant acute decrease in systolic and pulse pressures

http://www.ingentaconnect.com/content/klu/10286/2004/00000014/00000004/art00012#aff_1

Thursday, October 3, 2013

post-sympathectomy hyperalgesia


Behavioral test of tolerance for aversive mechanical stimuli in sympathectomized cats.


 , 
W J Roberts
  and 
D L Rhodes
Cats were studied behaviorally to determine their suitability as an animal model for the post-sympathectomy hyperalgesia reported to occur in humans. For this study a device and methodology were developed which allow humane testing of tolerance for intense mechanical stimulation of the hindlegs. Behavioral tolerance was measured quantitatively before and after unilateral sympathectomy. The results from this preliminary study of 6 cats are remarkably similar to those reported for humans; 1 of the 6 cats showed a decreased tolerance on the sympathectomized side which was delayed in onset and of limited duration. The new methodology appears to provide relatively stable, quantitative measures of tolerance for aversive stimulation, and the cat shows promise as an animal model for post-sympathectomy hyperalgesia.
Pain. 1983; 15(2)

Saturday, September 28, 2013

Tuesday, September 24, 2013

significant number of primary hyperhidrosis patients (more than 70%) were so pleased with the results that they decided to forgo the surgery


At the beginning of our study, thoracic sympathectomy was indicated indiscriminately to all primary hyperhidrosis patients. The authors observed a number of patients who were dissatisfied with the results obtained from this technique, particularly due to the undesirable but frequent side effect of compensatory hyperhidrosis. Hyperhidrosis is a condition that deeply affects the individual's emotional component, and many of them, despite being warned previously, are not psychologically prepared to address this new situation. The authors then included a psychologist in the study and directed the patients for routine psychological evaluations to prepare and better select them for surgery. In addition, the authors began to study a pharmacological formula to medicate these patients for the same purpose. Oxybutynin is an anticholinergic drug that has been used safely at high doses (up to 15 mg/day) to treat micturition disorders, and a side effect observed in these patients has been diminished sudoresis. Studies conducted by our group have documented the clinical benefits of a low dose of oxybutynin (10 mg/day). The authors found that a significant number of primary hyperhidrosis patients (more than 70%) were so pleased with the results that they decided to forgo the surgery [50-53].
Expert Review of Dermatology7.6 (Dec 2012): 529-538.