Surgical treatment for hyperhidrosis causes hyperhidrosis...

Localised hyperhidrosis may also be due to:

▪ Stroke

▪ Spinal nerve damage

▪ Peripheral nerve damage

▪ Surgical sympathectomy

▪ Neuropathy

▪ Brain tumour

▪ Chronic anxiety disorder

http://www.dermnet.org.nz/hair-nails-sweat/hyperhidrosis.html

Complications of surgical (Thoracic and Lumbar) Sympathectomy

Post-sympathectomy neuralgia - pain overlying the scapula

Compensatory sweating - involving the lover back or face

Pneumothorax

Bleeding due to azygos vein or intercostal artery injury

Winged scapula due to long thoracic nerve injury (p. 517)

Mastery of Vascular and Endovascular Surgery

Gerald B. Zelenock, Thomas S. Huber, Louis M. Messina, Alan B. Lumsden, Gregory L. Moneta

Lippincott Williams & Wilkins, 15/12/2005 - 900 pages

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

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

a post-sympathectomy denervation of the lower regions of the body, associated with incapacitating postural hypotension

The traditional biochemical tests of sympathetic nervous system function used in clinical diagnosis (urine and plasma catecholamine measurements) are indices of "overall" sympathetic nervous activity, and incapable of detecting localised changes in sympathetic tone confined to individual organs. Recently developed radiotracer methods, which enable the pattern of sympathetic nervous dysfunction in disease states to be delineated, were used to detect abnormalities in regional sympathetic nervous system activity in two patients presenting problems in management. In one, the abnormality of sympathetic function was iatrogenic, a post-sympathectomy denervation of the lower regions of the body, associated with incapacitating postural hypotension. In the other, unexplained persistent sinus tachycardia proved to be due to an increase in sympathetic nervous tone restricted to the innervation of the heart. Knowledge of the underlying sympathetic nervous pathophysiology in these patients influenced the choice of drugs subsequently used in their treatment.

Aust N Z J Med. 1984 Dec;14(6):855-9.

Two patients with abnormalities of regional sympathetic nervous tone.

O'Hehir R, Esler M, Jennings G, Leonard P, Little P, Johns J, Panetta F.

http://www.ncbi.nlm.nih.gov/pubmed/6598055

reduction in all proline-richproteins (PRP) in the saliva following sympathectomy

The protein constituents in parasympathetically evoked saliva from normal and short-term sympathectomized parotid gland swere compared. There was a reduction in all proline-richproteins (PRP) in the saliva following sympathectomy. The decrease was quantified for acidic PRP by high- performance ion-exchange chromatography, which showed an increase in the ratio of amylase to other proteins. These results suggest that sympathetic impulses influence the synthesis of PRP and amylase in opposite directions. 

Quarterly Journal ofExperimental Physiology (1988) 73, 139-142

objective methods to diagnose palmar hyperhidrosis and monitor effects of botulinum toxin treatment

Evaluation of objective methods to diagnos... [Clin Neurophysiol. 2004] - PubMed - NCBI: "objective methods to diagnose palmar hyperhidrosis and monitor effects of botulinum toxin treatment"

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No compensatory sweating after botulinum toxin... [Br J Dermatol. 2005] - PubMed - NCBI

No compensatory sweating after botulinum toxin... [Br J Dermatol. 2005] - PubMed - NCBI: "No compensatory sweating after botulinum toxin treatment of palmar hyperhidrosis"

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Patient with erythromelalgia did not respond to pharmacological therapy or surgical sympathectomy

http://www.jmedicalcasereports.com/content/3/1/106

patient information must include the long-term substantial risk for severe CS and regret of the procedure.

http://www.ncbi.nlm.nih.gov/pubmed/22191130

Another case of disabled thermoregulation and heatstroke following sympathectomy

We describe an extreme case of compensatory truncal hyper- hidrosis and anhidrosis over the head and neck region which led to a heatstroke. 

Six months after the initial operation, he had an episode of heatstroke while perform- ing outdoor duties which required running for around 5 km. The temperature on the day was between 30–32°C, and the relative humidity was between 75 and 85%. At that time, he complained of light-headedness, ‘feeling’ that heat could not dissipate from his head and neck region and muscle cramp in his legs. He was transferred to a hospital and was found to have a body tem- perature of 40°C and shock. His presentation was similar to a previous report by Sihoe et al. [1] on a patient with post- sympathectomy heatstroke. He was subsequently successfully treated with fluid and electrolyte resuscitation and supportive care.
  

Interactive CardioVascular and Thoracic Surgery 14 (2012) 350–352

no chance for nerve regeneration as early as 10 days after clipping

*Study presented at the 9th Biannual International Society for Sympathetic Surgery Conference in Odense, Denmark in May 2011. 

www.tswj.com/aip/134547.pdf

69% of patients continued to have relief after ETS, patient satisfaction rate was 56%

There were no operative mortalities, minor complications occurred in 22%. Initial success rate was 88%. Median follow up was 93 (24-168) months, response rate to the questionnaire was 85%. Sixty-nine per cent of patients continued to have relief of initial symptoms, whereas patient satisfaction rate was 56%. CS was present in 42 patients (68%). Long-term satisfaction rates per initial indication group were 42% for facial blushing and 65% for hyperhidrosis (n.s.), and CS was present in 79% vs 61%, respectively.

CONCLUSION:

ETS appears a safe treatment for upper limb hyperhydrosis with acceptable long-term results. For excessive blushing, however, long-term satifaction rates of ETS are severely hampered by a high incidence of disturbing compensatory sweating. ETS should only be indicated in patients with unbearable symptoms refractory to non-surgical treatment. The patient information must include the long-term substantial risk for sever CS and regret of the procedure.

http://www.ncbi.nlm.nih.gov/pubmed/22191130

Ethanol-induced cardiac hypertrophy: effects of peripheral sympathectomy

Increases in relative cardiac weight were evident in hearts from sympathectomized animals after 4 days of sympathectomy, and this change reached significance in the hearts from 6-hydroxydopamine-treated rats after a further 2 days on the control diet. Hearts from animals exposed to ethanol showed a marked, rapid development of cardiomegaly; after 24 h there was an increased mass of some 17%, which was sustained over the remaining 24-h period. The proportion of cardiac protein did not differ in the large hearts from ethanol-treated animals and those from their controls, hence myocardial oedema could not account for the increase in weight.

http://www.ncbi.nlm.nih.gov/pubmed/2966664

"sympathectomy highlighted the disparity between what is known in practice and what appears in the literature"

The March 2004 edition was quite outstanding, with an excellent editorial reminding the reader that only good results are published. The review on thoracoscopic sympathectomy highlighted the disparity between what is known in practice and what appears in the literature. 

‘Know Your Results’, the topic of the ASGBI Annual Scientific Meeting, is of outstanding importance; what is more, the surgeon has to go on knowing his/her results to ensure standards of practice do not slip.

The Journal appreciates comments and criticism and the correspondence column remains a crucial part of the BJS in its interaction between editors and reader. It is also part of the scientific process.

A more robust and incisive criticism of articles known to be flawed would prevent the retractions that have recently been published in the Lancet.

Christopher Russell, Chairman, BJS Society

Association of Surgeons of Great Britain and Ireland, ANNUAL REPORT 2004

The effect of bilateral sympathectomy was significantly greater than that of unilateral sympathectomy

The effect of bilateral sympathectomy was significantly greater than that of unilateral sympathectomy. Unilateral and bilateral sympathectomy produced similar reductions in the concentrations of NPY-ir and NA in the ventricular tissue. In contrast dissimilar changes were produced in the atrium. Although bilateral sympathectomy almost totally depleted the NA from the right atrium (by 98%), the NPY-ir levels were only reduced by 50%. These results indicate that approximately half the content of NPY in the right atrium is not present in sympathetic noradrenergic neurones. 

Maccarrone C, Jarrott B.

Source

University of Melbourne, Department of Medicine, Austin Hospital, Heidelberg, Vic., Australia.

J Auton Nerv Syst. 1987 Dec;21(2-3):101-7.

http://www.ncbi.nlm.nih.gov/pubmed/3450689

sympathectomy induced morphological alterations in the masseter muscles

Sympathectomized animals showed varying degrees of metabolic and morphological alterations, especially 18 months after sympathectomy. The first five groups showed a higher frequency of type I fibres, whilst the oldest group showed a higher frequency of type IIb fibres. In the oldest group, a significant variation in fibre diameter was observed. Many fibres showed small diameter, atrophy, hypertrophy, splitting, and necrosis. Areas with fibrosis were observed. Thus cervical sympathectomy induced morphological alterations in the masseter muscles. These alterations were, in part, similar to both denervation and myopathy. These findings indicate that sympathetic innervation contributes to the maintenance of the morphological and metabolic features of masseter muscle fibres.

http://www.ncbi.nlm.nih.gov/pubmed/11454103

Bilateral cervical sympathectomies should be avoided because of the destruction of cardioaccelerator tone

http://www.hiesiger.com/physicians/physicianrfl.html

SURGICAL SYMPATHECTOMY ON THE SENSITIVITY TO EPINEPHRINE OF THE BLOOD VESSELS OF MUSCULAR SEGMENTS OF THE LIMBS

Pursuing this study of the effect of epinephrine on muscle blood flow, Duff and Swan (10) reported that during intravenous epinephrine infusions the initial marked dilatation was succeeded by a second phase of moderate dilatation in normal but not in sympathectomized limbs. Because of its absence in chronically sympathectomized limbs this secondary vasodilatation was at that time thought to be an indirect vasomotor effect mediated by the sympathetic nerves. Re-examination of their data in the light of some subsequent critical experiments now reveals that the difference which they found between normal and sympathectomized limbs may be ascribed largely to vascular hypersensitivity in the later.

In the present paper these additional data are reported, and are incorporated with those of Duff and Swan(10); the whole material being interpreted to provide evidence that hypersensitivity of the vessels of skeletal muscle in the upper and lower limbs may result from pre- and postganglionic sympathectomy in man.

EFFECT OF SURGICAL SYMPATHECTOMY ON THE SENSITIVITY TO EPINEPHRINE OF THE BLOOD VESSELS OF MUSCULAR SEGMENTS OF THE LIMBS, ROBERT S. DUFF

J Clin Invest. 1953 September; 32(9): 851–857.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC438413/

Sympathetic nerves protect against blood-brain barrier disruption

http://www.ncbi.nlm.nih.gov/pubmed/7064183

Nerve regeneration commonly occurs following both surgical of chemical sympathectomy

Sympathectomy is a destructive procedure that interrupts the sympathetic nervous system. Chemical sympathectomies use alcohol or phenol injections to destroy sympathetic nervous tissue (the so‐called "sympathetic chain" of nerve ganglia). Surgical ablation can be performed by open removal or electrocoagulation (destruction of tissue with high‐frequency electrical current) of the sympathetic chain, or minimally invasive procedures using thermal or laser interruption. 

Nerve regeneration commonly occurs following both surgical of chemical ablation, but may take longer with surgical ablation.

This systematic review found only one small study (20 participants) of good methodological quality, which reported no significant difference between surgical and chemical sympathectomy for relieving neuropathic pain. Potentially serious complications of sympathectomy are well documented in the literature, and one (neuralgia) occurred in this study. 

The practice of sympathectomy for treating neuropathic pain is based on very weak evidence. Furthermore, complications of the procedure may be significant.

Authors' conclusions: The practice of surgical and chemical sympathectomy for neuropathic pain and CRPS is based on very little high quality evidence. Sympathectomy should be used cautiously in clinical practice, in carefully selected patients, and probably only after failure of other treatment options.

Editorial Group: Cochrane Pain, Palliative and Supportive Care Group.

Publication status: New search for studies and content updated (conclusions changed).

Citation: Straube S, Derry S, Moore RA, McQuay HJ. Cervico‐thoracic or lumbar sympathectomy for neuropathic pain and complex regional pain syndrome. Cochrane Database of Systematic Reviews 2010, Issue 7. Art. No.: CD002918. DOI: 10.1002/14651858.CD002918.pub2. Link to Cochrane Library. [PubMed]

Copyright © 2010 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0011684/

It is well recognized that preganglionic sympathectomy involves division of cholinergic elements and sensory fibers

It is well recognized that preganglionic sympathectomy involves division of cholinergic elements and sensory fibers. 

Theodore Cooper, Department of Surgery, St Louis University School of Medicine 

Pharmacological Reviews, 1966 Vol. 18, No. 1. Part I

When sympathectomized rats were injected with the same carcinogen, 24 out of 38 developed tumors

"Lesions od the sympathetic nervous system have been shown to increase the incidence, induction, and take and growth, of tumors. In neurally intact rats which were infected with a known carcinogen, only 1 out of 30 developed a tumor. When sympathectomized (intentional sympathetic nerve interference) rats were injected with the same carcinogen, 24 out of 38 developed tumors. These results confirm that sympathetic block enhances tumor implantation."

"Clearly the autonomic nervous system in exquisitely sensitive to information from all parts of the nervous system and may affect many aspects of the immune response."

"Since immune response is initiated by the nervous system, this appears to be a likely place to look for the cause of disease."

Edward E. Cremata, Neural control of immunity, January/February, 1982 The Digest of Chiropractic Economics

1. Couhard, R. and P. Hein, Cancers de types divers provoqucs par lesion du sympathique, CR. Acad. Sci,  2434-2437, 1957.

2. Couhard, R. and F. Heitz, Production de tumeurs malìgncs consecutivas a des lesions des fibres sympaxhiqucs du neri sciatique chez le cobaye. CR. Amd. Scl", 244: 4-09-411, 1957. 

3. Nayar, KK., Arthur, E. and Ballís,  M4, Th: transmission of tumours induced in cockroaches by nerve severance, Experienria, 27: 183, 1971. 

4. Champy, C.. Lesions neum-sympathìques precedam la canccrixation dans Patlaque de Porganìsmc par les substances cancerîgenes, C.R. Acad. Sci, 248: 3665-1666; 1959. 

 www.usapr.org/paperpdfs/75.pdf

The alpha-adrenergic sensitivity of smooth muscle following sympathectomy

The data obtained suggest alteration of pharmacological characteristics of smooth muscle alpha-adrenoceptors after interruption of the sympathetic nerve.

Fiziol Zh SSSR Im I M Sechenova. 1988 Sep;74(9):1287-93.

blockade of sympathetic nerves - Trigeminal Substance P Neurons in Cluster Headache

A comparison is made with the present opinion on activation of parasympathetic and blockade of sympathetic nerves to explain the various symptoms of a cluster attack.

The Involvement of Trigeminal Substance P Neurons in Cluster Headache. An Hypothesis

Jan Erik Hardebo , M.D.

From the Department of Neurology and Department of Histology, University of Lund, Lund, Sweden.

Headache: The Journal of Head and Face Pain

Volume 24 Issue 6, Pages 294 - 304

Published Online: 22 Jun 2005

Norepinephrine activates pain pathways after nerve injury

According to MedicineNet, RSD involves "irritation and abnormal excitation of nervous tissue, leading to abnormal impulses along nerves that affect blood vessels and skin."

Animal studies indicate that norepinephrine, a catecholamine released from sympathetic nerves, acquires the capacity to activate pain pathways after tissue or nerve injury, resulting in RSD.

http://arthritis.about.com/od/rsd/a/rsd.htm

Correlating Dermatomal Level to Surface Landmarks

Table 3. Correlating Dermatomal Level to Surface Landmarks
Dermatomal Level	Surface Landmark	Comments
C8	Little finger	Cardioaccelerator fibers blocked (T1 to T4)
T1, T2	Inner aspect of the arm	Above fibers blocked but to lesser degree
T4	Nipple line, root of scapula	Cesarean section, Appendectomy, upper abdominal surgery
T7	Inferior border of scapula; Tip of xiphoid	Splanchnic (T5 to L1) blockage; lower abdominal surgery; T5 to T7 for thoracotomy or fractured ribs (at relevant interspace)
T10	Umbilicus	Usual level for LE procedures, hip surgery, TURP, vaginal delivery
L2 to L3	Anterior thigh	Appropriate for knee, foot surgery
S1	Heel of foot	Part of sacral plexus, difficult to block

http://www.nysora.com/test2/regional_anesthesia/neuraxial_techniques/3026-epidural-blockade.html

"sympathectomy of one side of the body leads to an increase in the development of tumors on the denervated side"

Coujard R, Heitz F. Cancerologic: Production de tumeurs malignes consecutives a des lesions des fibres sympathiques du nerf sciatique chez le Cobaye. C R Acad Sci 1957; 244: 409­411.


This suggest that interference with the sympathetic nervous system (SNS) can lead to a compromise of the body's immune system [81–82]. Conversely, an immunological response can alter the response pattern of the sympathetic nervous system. [83]
http://www.chiro.org/LINKS/FULL/VERTEBRAL_SUBLUXATION_2.shtml 

Management of reflex sweating in spinal cord injured patients

Reflex sweating can be a problem for cervical spinal cord injured patients. Patient comfort and skin breakdown have been the major concerns. Five patients were studied prospectively, using a patch containing 1.5mg of scopolamine. Patches were changed every third day. Each patient was carefully monitored before and after application of the patch for signs and symptoms of anticholinergic side effects such as dizziness, blurred vision and dry mouth. Patients were also monitored for changes in patch signs before and after use, including residual urine volumes, blood pressure, heart rate, and mental status. Our study indicates that topical scopolamine successfully controlled reflex sweating in 5 patients without anticholinergic side effects.

PMID:

2742472

[PubMed - indexed for MEDLINE]

http://www.ncbi.nlm.nih.gov/pubmed/2742472

Heart rate significantly decreased after bilateral but not after unilateral right sympathectomy

http://www.ncbi.nlm.nih.gov/pubmed/12643398

surgical and chemical sympathectomy can both modulate bone cell function

It is known that surgical and chemical sympathectomy can both modulate bone cell function.  However, the sympathetic
nervous system (SNS) can give rise to both anabolic and catabolic effects [28-31] and its role in regulating bone remodeling is, therefore, controversial. For example, some researches reported that if bone is deprived of its sympathetic innervation, bone
deposition and mineralization is reduced and bone resorption increases [31], while in some other reports a sympathectomy impairs bone resorption [28].
Wei Fan BSc, MSc
Institute of Health and Biomedical Innovation
Faculty of Built Environment & Engineering
Queensland University of Technology

eprints.qut.edu.au/35722/7/35722b.pdf

Sustained Benefit (sic!) Lasting One Year from T4 Instead of T3-T4 Sympathectomy

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2664277/

No statistically significant association between the CS with age, family history, type of HH and extent of TS

http://ejcts.oxfordjournals.org/content/34/3/514.full

Sympathectomy exacerbated the inflammation and osteopathic destruction of arthritic joints

http://www.ncbi.nlm.nih.gov/pubmed/8632052

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

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

Loss of impulse control as a side-effect of surgery for blushing and sweaty hands

http://www.sympatix.fi/blog/?lang=en_

left thoracic sympathectomy to prevent electrical storms in CPVT patients

Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT), a life threatening arrhythmia induced by sympathetic stimulation in susceptible individuals is often refractory to antiarrhythmic agents. First line of treatment, beta-blockers can be ineffective in up to 50% with implantable cardioverter-defibrillator (ICD) placement for refractory cases. Paradoxically ICD can be arryhthmogenic from shock-associated sympathetic stimulation, initiating more shocks and "electrical storms". This has led to the use of more effective beta blockade offered by left sympathectomy, now performed by minimally invasive video assisted thoracoscopic surgery (VATS).
To our knowledge this is first such reported case.
Heart Lung Circ. 2011 Nov;20(11):731-3. Epub 2011 Apr 7.

 http://www.ncbi.nlm.nih.gov/pubmed/21478052

Sympathectomy for the treatment of polymorphic ventricular tachycardia

Bilateral thoracoscopic cervical sympathectomy for the treatment of recurrent polymorphic ventricular tachycardia.

Turley AJ, Thambyrajah J, Harcombe AA.
Despite potassium and magnesium supplements, beta blockade, implantation of a single then dual chamber implantable cardioverter defibrillator (ICD), amiodarone, nicorandil, and mexiletine, the patient continued to experience arrhythmia storms, receiving more than 700 ICD discharges over seven months. She was ultimately treated successfully with bilateral thoracoscopic cervicothoracic sympathectomies. This is the first reported bilateral thoracoscopic treatment of a patient with LQTS and symptomatic life threatening ventricular tachyarrhythmias refractory to current pharmacological and pacing techniques.

Cardiothoracic Division, The James Cook University Hospital, Marton Road, Middlesbrough TS4 3BW, UK. andrew.turley@stees.nhs.uk

Heart. 2005 Jan;91(1):15-7.
http://www.ncbi.nlm.nih.gov/pubmed/15604323

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

This is how "compensatory" sweating looks like

http://www.sympatix.fi/blog/?p=706

cutaneous area innervated by the sympathetic T2 and T3 ganglia extends to zones influenced by T1 in up to 20.75% of patients

The territory influenced by the T2 and T3 sympathetic ganglia is more extensive than has been described by classical anatomical studies. The cutaneous area innervated by the sympathetic T2 and T3 ganglia extends to zones influenced by T1 in up to 20.75% of patients with primary hyperhidrosis.
http://www.ncbi.nlm.nih.gov/pubmed/12550015

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

Effect of lumbar sympathectomy: abolition of ejaculation, causalgia in 41, general morbidity of 0.6% and mortality rate of 0.6 %, arrhythmias, cardiac decompensation

Goldstein, reviewing the complications of 791 patients undergoing open lumbar sympathectomy reports 10% of specific complications, such as abolition of ejaculation in 22 patients and causalgia in 41, general morbidity of 0.6% (TEP and bleeding) and mortality rate of 0.6 % (arrhythmias, cardiac decompensation or bleeding) 15.

SIMPACTECTOMIA RETROPERITONEOSCÓPICA FOR TREATMENT OF LUMBAR plantar hyperhidrosis RETROPERITONEOSCOPIC lumbar sympathectomy FOR THE TREATMENT OF PLANT HYPERIDROSIS
Marcelo de Paula Loureiro, TCBC-PR ¹, ² Neomar Roman, Sheila Cristina Weigmann ³;
Aline ³ Fontana, Paulo Cesar Bufara Boscardim4
(Rev Bras ECR. Cir. 2007, 34 (4): 222-224).
(translated by google)

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

Effects of cervical sympathectomy, stage of the estrous cycle and estradiol treatment.

C A CA Nagle, D P DP Cardinali and J M JM Rosner Life Sci 13(8):1089-103 (1973) PMID 4357690

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 complications^11-13.

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

limited understanding of the role of the sympathetic nervous system in mediating pain

The role of sympathetic blocks in herpes zoster (HZ) and postherpetic neuralgia (PHN) remains controversial due to methodologic shortcomings in published studies and limited understanding of the role of the sympathetic nervous system in
mediating pain.

Local anaesthetic block of the sympathetic chain can be used to produce transient increase in blood flow to a limb (stellate ganglion block for arm, lumbar sympathetic block for leg).
Neurolytic (phenol) lumbar sympathectomy can increase lower limb blood flow for up to 6 months. Neurolytic stellate ganglion block carries high risk of injury to adjacent nerves and is rarely used. 

SCS can improve tissue perfusion in ischaemic heart disease and peripheral vascular disease.

What is the evidence?
Neurolytic lumbar sympathectomy increases popliteal artery flow and perfusion of leg muscles in peripheral vascular disease42. A prospective series has shown total relief of pain and healing of ulcers in 58.7% of cases of non-operable peripheral vascular disease43. 

Both retrospective44 and prospective45 case series support a role for SCS in the management of refractory angina pectoris. Use of SCS resulted in reduced anginal symptoms and medication use.

Information for Health Professionals 
        Hunter Integrated Pain Service
        Updated January 2010

Procedural Intervention Guideline 

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

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

- After surgical intervention (19%)
- 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

- Sensory disturbances (90%) typically in a glove or stocking-like distribution

• 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 dysfunction

• 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

http://www.physio-pedia.com/Complex_Regional_Pain_Syndrome

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

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

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

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

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.

Post-sympathectomy neuralgia is a severe complication since pain can be permanent, severe, and incapacitating

http://www.springerlink.com/content/q04711t06j164206/

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 

http://www.malonie.com/surgeries/upper-extremity-sympathectomy.htm

"ETS has proved moderately successful in treating hyperhidrosis, although the operation does carry a high risk of complications. "

Other complications of ETS include:

• 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).

Rarer complications of ETS include:

• 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).

Phrenic nerve damage can lead to shortness of breath, though it may be possible to repair the nerve during surgery.

http://www.knowsley.nhs.uk/health-a-to-z/h/hyperhidrosis-excessive-sweating/

Ovarian sympathectomy as treatment for pain

Lateral pelvic structures receive their innervation mostly via nerve fibres traversing the infundibulopelvic ligaments. Thus, for lateral pelvic pain, ovarian sympathectomy could theoretically alleviate the pain. However it is rarely performed because of the high risk of vascular complication and its squeal on ovarian functions.

The Internet Journal of Gynecology and Obstetrics ISSN: 1528-8439

Chronic Pelvic Pain: A Frustrating Scenario
http://www.ispub.com/journal/the-internet-journal-of-gynecology-and-obstetrics/volume-10-number-1/chronic-pelvic-pain-a-frustrating-scenario.html

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
Received: 13 October 2006/Accepted: 2 November 2006
Surg Endosc (2007) DOI: 10.1007/s00464-007-9241-9



[15] Ojimba TA, Cameron AEP (2004) Drawbacks of endoscopic thoracic sympathectomy. Br J Surg 91: 264–269



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/

sympathectomy improves skin blood flow at the thermoregulatory but not the nutritive level of skin microcirculation

sympathectomy improves skin blood flow at the thermoregulatory but not the nutritive level of skin microcirculation. This may be related to the fact that the thermoregulatory vessels are mainly sympathetically controlled, whereas the nutritive capillaries are mainly controlled by local (nonneural) factors.
http://www.springerlink.com/content/ukwtrn2y72age93t/

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

typical CRPS changes also occur following sympathectomy, which has traditionally been considered curative of CRPS

(p.557) 

Handbook of Neurosurgery

Mark S. Greenberg

Thieme, 22/02/2010 - 1352 pages

For two decades, Handbook of Neurosurgery -- now in a fully updated seventh edition -- has been an invaluable companion for every neurosurgery resident and nurse, as well as neurologists and others involved in the care of patients with brain and spine disorders.

Sympathectomy has been discredited in this condition

Vasospastic conditions

Raynaud’s syndrome

http://surgeryonline.wordpress.com/category/arterial-disorders/

Cannon's law of denervation (supersensitivity)

Cannon's law of denervation states that when a tissue is deprived of its nerve supply, it will develop hypersensitivity to its own neurotransmitter(s). 

Adult and Pediatric Urology, Volume 2

Jay Young Gillenwater

1 Review

Lippincott Williams & Wilkins, 2002

An enigma in the past, and today a source of great interest to neurobiologists, the importance of denervation supersensitivity with regard to pain has not been appreciated. The implications of Cannon's Law of denervation are probably far more embracing than the few conditions briefly discussed here. It is possible that many other forms of pain, eg, trigeminal or postherpetic (neuralgic) and even chronic low-back pain, are a postdenervation supersensitivity phenomenon rather than the result of noxious stimuli. Thus, pain may be the central perception of 1) an afferent barrage from noxious stimuli or 2) the abnormal input into the central nervous system from ordinarily non-noxious stimuli rendered excessive through overly sensitive receptors (or a variable combination of both). Consider, therefore, the chronic "low back" patient whose discomfort still persists following resolution of the acute phase. Though not crippled or even in distress, he is unable to cope with any but light activities. Such a patient many not be "hyperalgesic" in that ordinarily non-noxious stimuli, eg, prolonged standing, sitting, or walking, can cause symptoms. "Pain" as a scientific term should preferably be discarded and a distinction made between "nociception" and "hyperalgesia," because different approaches are required in their management.
http://www.istop.org/spondylosis.html

Variations in dynamic lung compliance during endoscopic thoracic sympathectomy with CO2 insufflation

The current study examined the effects of capnothorax on dynamic lung compliance (DLC) of the ventilated lung during ETS.
One way analysis of variance (ANOVA) was used for analysis of data before, during and after OLCV. P<0.05 was considered significant. The mean values of the DLC were 52 +/- 6, 30 +/- 3, 39 +/- 5 and 53 +/- 9 ml/cmH(2)O before, during (at 10 and 5 mmHg IPP) and after OLCV respectively with significant differences before and at 10 and 5mmHg IPP. In conclusions, during OLCV and capnothorax for ETS, DLC tends to decrease with increasing of intrapleural CO(2) insufflation pressure. However, in short procedures it has no deleterious postoperative effect. To the best of our knowledge this is the first study performed to investigate DLC changes during OLCV with capnothorax.
Clin Auton Res. 2003 Dec;13 Suppl 1:I94-7.

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

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.

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.

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

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.

The Happy Bottom Riding Club: The Life and Times of Pancho Barnes (Paperback)

by Lauren Kessler (Author)

Postoperative complications are frequent after surgery for palmar sweating and facial redness

Lakartidningen. 2001 Apr 11;98(15):1764-5.

http://ltarkiv.lakartidningen.se/artNo19066P

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.

Sympathectomy increased the pain threshold and made the sympathectomized rats hypesthetic

Normal adult rats were sympathectomized at L2-L3. The threshold for thermal noxious pain by hot-plate analgesia test and changes in neuropeptides in the lumbar dura mater and dorsal root ganglia using light microscopic immunohistochemistry were assessed and compared with control rats.

Results: In the hot-plate analgesia test, sympathectomized rats increased their hot-plate latency time compared with that of sham-operated rats. Density of calcitonin gene-related peptide immunoreactive fibers in sympathectomy side of the lumbar dura mater decreased to 45.5% compared with the contralateral side. The number and size of calcitonin gene-related peptide immunoreactive cells in dorsal root ganglia showed no difference between sympathectomized and contralateral side.

Conclusion: Sympathectomy increased the pain threshold and made the sympathectomized rats hypesthetic. A large numbers of sensory fibers innervated the lumbar dura mater via L2-L3 sympathetic nerve in rats. Sympathectomy reduced the number of these nerve fibers in the lumbar dura mater. Sympathetic nerves may play an important role for low back pain involving the lumbar dura mater.

http://journals.lww.com/spinejournal/Abstract/1996/04150/An_Anatomic_Study_of_Neuropeptide.4.aspx

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

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

sympathectomy resulted in complete disappearance of histochemically detected adrenergic and a considerable decrease of cholinergic nerve fibers in the pial arterial walls

sympathectomy resulted in complete disappearance of histochemically detected adrenergic and a considerable decrease of cholinergic nerve fibers in the pial arterial walls. The vasodilatation was much less obvious in sympathectomized than in control animals. This was associated with (and probably caused by) a considerable rise in histochemically detected serotonin activity of the pial arteries walls. After recovery of blood supply to the brain the constriction of the pial arterial active segments restricting the excessive cerebral blood flow, was significantly reduced due, probably, to the sympathetic deprivation. Therefore, the sympathetic control plays an important part in pial arterial responses regulating the adequate blood supply of the cerebral cortex.
http://www.ncbi.nlm.nih.gov/pubmed/7173422

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

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:

1. 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
   
2. 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
3. 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.
4. 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)

Patients should be shown images to realize just how bad 'compensatory sweating' can be

The consequence of sympathectomy, the 'cure' for sweaty palms is a full body hyperhidrosis. The term 'compensatory sweating' is clearly misleading.
Top arrow shows area where the body lost its ability to sweat (Anhidrosis)
Middle arrow shows are of 'demarcation line' between Anhidrosis and Hyperhidrosis
Bottom arrow shows area below the injury to the sympathetic chain (sympathectomy) which results in pathological autonomic function. Similar condition is seen in people with Diabetic Neuropathy and following spinal cord injury.

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

while evidence-based medicine is a noble ideal, marketing-based medicine is the current reality

i.bnet.com/.../spielmans-parry-ebm-to-mbm-jbioethicinqu-2010.pdf

pathological pain, such as occurs in response to peripheral nerve injury

It is recently become clear that activated immune cells and immune-like glial cells can dramatically alter neuronal function. By increasing neuronal excitability, these non-neuronal cells are now implicated in the creation and maintenance of pathological pain, such as occurs in response to peripheral nerve injury. Such effects are exerted at multiple sites along the pain pathway, including at peripheral nerves, dorsal root ganglia, and spinal cord. In addition, activated glial cells are now recognized as disrupting the pain suppressive effects of opioid drugs and contributing to opioid tolerance and opioid dependence/withdrawal. While this review focuses on regulation of pain and opioid actions, such immune-neuronal interactions are broad in their implications. Such changes in neuronal function would be expected to occur wherever immune-derived substances come in close contact with neurons.
http://www.ncbi.nlm.nih.gov/pubmed/17706291

Neuropathic pain is caused by damage to, or dysfunction of the nervous system

http://www.mydr.com.au/pain/neuropathic-pain

Disorders of sweating - Iatrogenic causes: Surgical sympathectomy/sympathotomy

(p. 558)

Primer on the Autonomic Nervous System

 edited by David Robertson, Italo Biaggioni, Geoffrey Burnstock, Phillip A. Low, Julian F.R. Paton

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)

Primer on the Autonomic Nervous System

 edited by David Robertson, Italo Biaggioni, Geoffrey Burnstock, Phillip A. Low, Julian F.R. Paton

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

David Robertson, Italo Biaggioni, Geoffrey Burnstock, Phillip A. Low, Julian F.R. Paton

Academic Press, 01/11/2011 - 730 pages

sympathectomy cannot by direct effect on the muscle vessels either abolish or lessen claudication

http://pmj.bmj.com/content/29/335/459

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.

1. Daniel Quintana

   PhD candidate and researcher at University of Sydney
   

2. Andrew Kemp

   NHMRC Career Development Fellow at University of Sydney
   

http://theconversation.edu.au/depression-can-break-your-heart-literally-1102

compensatory sweating was perceived in 56% of the adults and all of the children, or CS was lower in children - illustrations of typical contradictions about effects of ETS

compensatory sweating was perceived in 56% of the adults and all of the children. With the compensatory sweating, the effect on the life was severe in children and the patient's satisfaction was 50-60%, showing a large difference from the satisfaction of the adult patients at nearly 100%. As for other complications, neuralgia was recognized in 9% of the adults, but not in the children, and the crisis of perceptual disorder, hemorrhage and Horner's syndrome did not occur in both the adults and children. The compensatory sweating in the child patients was more remarkable than in the adult patients and the postoperative satisfaction was low, and it seems better to perform thoracoscopic sympathic blockade after the adolescence.
http://sciencelinks.jp/j-east/article/200513/000020051305A0251361.php

Do children tolerate thoracoscopic sympathectomy better than adults? CS appeared within 6 months postoperatively in 81.8% of all the patients but significantly less in children
(69.8%) compared to the others (88.5%; P < 0.001). CS increased with time in 12% of the participants, but decreased in 20.8% of the children versus 10.5% of the others (P = 0.034), usually within the first two postoperative years. The severity of the CS was also lower in children: it was absent or mild in 54.3% of the children versus 38.0% of the others, and moderate or severe in 45.7 versus 62%, respectively (P = 0.004). Fifty-one percent of the participants claimed that their quality of life decreased moderately or severely as a result of CS, but only one-third of them (7.9% children vs. 22.4% others, P = 0.001) would not have undergone the operation in retrospect.
http://www.ncbi.nlm.nih.gov/pubmed/17999068