Reversal of Sympathetic Interruption by Removal of Clips

Is RATS Superior to VATS in Thoracic Autonomic Nervous System Surgery?

Technological development in the field of robotics has meant that, in recent years, more and more thoracic surgery departments have adopted this type of approach at the expense of VATS, and today robotic surgery boasts numerous applications in malignant and benign thoracic pathology. Because autonomic nervous system surgery is a high-precision surgery, it is conceivable that the application of RATS could lead to improved outcomes and reduced side effects, but its feasibility has not yet been thoroughly studied. This review identified three main areas of application: (1) standard thoracic sympathectomy, (2) selective procedures, and (3) nerve reconstruction. Regarding standard sympathectomy and its usual areas of application, such as the management of hyperhidrosis and some cardiac and vascular conditions, the use of RATS is almost anecdotal. Instead, its impact can be decisive if we consider selective techniques such as ramicotomy, optimizing selective surgery of the communicating gray branches, which appears to reduce the incidence of compensatory sweating only when performed with the utmost care. Regarding sympathetic nerve reconstruction, there are several studies, although not conclusive, that point to it as a possible solution to reverse surgical nerve interruption. In conclusion, the characteristics of RATS might make it preferable to other techniques and, particularly, VATS, but to date, the data in the literature are too weak to draw any evidence.

Surgical management of compensatory sweating: A systematic review

Endoscopic thoracic sympathectomy (ETS) surgery is a highly effective treatment of primary hyperhidrosis (PH) for the palms, face, axillae. Compensatory sweating (CS) is the most common and feared side effect of thoracic sympathectomy. CS is a phenomenon characterized by increased sweating in sites distal to the level of sympathectomy. Compensatory sweating is the main problem for which many patients give up surgery, losing the chance to solve their problem and accepting a poor quality of life. There are still no treatments that offer reliable solutions for compensatory sweating. The treatments proposed in the literature are scarce, with low case histories, and with uncertain results. Factors associated with CS are extension of manipulation of the sympathetic chain, level of sympathetic denervation, and body mass index. Therapeutic options include non surgical treatment and surgical treatment. Non surgical treatments include topical agents, botulinum toxin, systemic anticholinergics, iontophoresis. Surgical treatments include clip removal, extended sympathectomy and sympathetic chain reconstruction, although the efficacy is not well-established for all the methods. In this review we provide an overview of the treatments and outcomes described in the literature for the management of compensatory CS, with focus on surgical treatment.

Chinese expert consensus on the surgical treatment of primary palmar hyperhidrosis (2021 version)

Primary palmar hyperhidrosis (PPH) is a pathologic condition of excessive sweating on hands that has adverse impacts on patients’ social activity, professional life, and psychological state. Endoscopic thoracic sympathicotomy (ETS) is by far the treatment choice for PPH with the most stable and durable curative effects, but special attention should be given to the side effects of the surgery, especially compensatory hyperhidrosis (CH). This consensus is the second version of the Chinese Expert Consensus on the Surgical Treatment of PPH by the China Expert Committee on Palmar Hyperhidrosis (CECPH), which was published 10 years ago. This consensus emphasizes the need for special attention and careful assessment of the patients’ feelings, as well as their emotional and mental state, and emphasizes that distress due to palmar sweating and the desire for treatment are prerequisites for diagnosis. It also provides a more nuanced delineation of CH and reviews all new attempts to prevent and treat this side effect. New evidence of the epidemiology, pathogenesis of PPH, and indications for surgery were also assessed or recommended.

Thoracoscopic resympathectomy for persistent or recurrent palmar hyperhidrosis: single-center experience

BACKGROUND

In case of recurrence or persistent palmar hyperhidrosis, a sympathetic chain resection is suggested, however, many surgeons are still reluctant to offer further intervention because of the inability to predict the efficacy of such a procedure. We analyzed our large series of resympathectomy.

METHODS

Substantive retrospective analysis of 39 patients underwent a resympathectomy (minimally invasive bilaterally sympathetic chain Th2-3 resection). Patients referred from other hospitals or primarily operated at our institution for recurrence or persistence palmar hyperhidrosis were included in the study group.

RESULTS

No intraoperative complications were detected. Reoperation or chest tube positioning was necessary in 2 patients. Twenty-eight patients had a positive response (excellent or good results). Seven patients described a substantial, but not sufficient, reduction of the symptomatology. Four patients were very unsatisfied and regretted the operation.

CONCLUSIONS

Resympathectomy is highly effective procedure for patients who have persistent or recurrent symptoms. However, the indication of the operations should be more dissuasive as possible to avoid the risk of any undesirable psychologically side effects.

Selective T3-T4 sympathicotomy versus gray ramicotomy on outcome and quality of life in hyperhidrosis patients: a randomized clinical trial

Compensatory hyperhidrosis is the leading cause of patients' dissatisfaction after thoracic sympathicotomy. The study aimed to reduce compensatory hyperhidrosis to increase patients’ satisfaction. A prospective randomized study on palmar hyperhidrosis, May 2016–September 2019. Twenty-one patients T₃–T₄ sympathicotomy and 21 T₃–T₄ gray ramicotomy. Data prospectively collected. Analysis at study's end. Focus on the sweating, temperature, quality of life baseline and postoperatively, compensatory hyperhidrosis, hand dryness, patients' satisfaction, and if they would undergo the procedure again and recommend it. No baseline differences between groups. Hyperhidrosis was controlled postoperatively in all patients. No mortality, serious complications, or recurrences. Sympathicotomy worse postoperative quality of life (49.05 (SD: 15.66, IR: 35.50–63.00) versus ramicotomy 24.30 (SD: 6.02, IR: 19.75–27.25). After ramicotomy, some residual sweating on the face, hands, and axillae. Compensatory sweating worse with sympathicotomy. Satisfaction higher with ramicotomy. Better results with ramicotomy than sympathicotomy regarding hand dryness, how many times a day the patients had to shower or change clothes, intention to undergo the procedure again or recommend it to somebody else, and how bothersome compensatory hyperhidrosis was. T₃–T₄ gray ramicotomy had better results than T₃–T₄ sympathicotomy, with less compensatory sweating and higher patients' satisfaction.

Long-Term Outcomes and Course of Compensatory Sweating after Endoscopic Sympathicotomy

BACKGROUND

 Endoscopic thoracic sympathicotomy is an effective approach to the treatment of idiopathic localized hyperhidrosis, and compensatory sweating is the main reason for patient dissatisfaction. Our study discusses both the long-term outcomes of sympathicotomy and the course of compensatory sweating.

METHODS

 Patients with palmar and/or axillary hyperhidrosis who were operated by the same surgical team between January 2008 and December 2014 were included in the study. After at least 5 years (60 months) from operation, patients were questioned about their treatment outcomes by using an original survey form.

RESULTS

 Of the 137 patients included in the study, 88 (64.2%) were female and 49 (35.8%) were male. The mean time from the operation to the survey interview was 80.9 ± 14.1 (64-136) months. After operation, complaints disappeared in 95.1% of the patients, and decreased in 4.9% with palmar hyperhidrosis. Complaints completely disappeared in 12.9% and decreased in 81.7% of the patients with axillary hyperhidrosis. Ninety-seven (70.8%) of the patients described increased sweating in some parts of their body after operation but only 47 reached an uncomfortable intensity. The number of patients who regretted the operation due to the compensatory sweating was 13 (9.5%). The patients' overall scoring of the operation and procedure was calculated as 8.0 ± 2.1 (0-10 points) out of 10.

CONCLUSION

 Endoscopic thoracic sympathicotomy's long-term outcomes are also satisfactory in the treatment of palmar and axillary hyperhidrosis. Compensatory sweating may decrease over time, only a minority of patients will express regret at undergoing the treatment.

Rib-oriented Thoracoscopic Sympathetic Surgery for Hyperhidrosis: Prospective Long-term Results and Quality of Life

BACKGROUND

The optimal thoracoscopic sympathetic surgery for primary palmar and/or axillary hyperhidrosis (PPAH) is still unclear because of lack of uniform technique and qualitative/quantitative scales for definition of results. The aims of this study were to compare long-term outcomes based on the surgical technique and the level of sympathetic trunk interruption by clipping and to assess postoperative compensatory sweating (CS), patients' satisfaction, and quality of life (QoL).

MATERIALS AND METHODS

Between September 2009 and April 2016, 94 patients who underwent 2-stage bilateral thoracoscopic rib-oriented (R) sympathetic clipping were prospectively followed up through the administration of standardized preoperative and postoperative questionnaires.Thirty-four (36.2%) patients underwent single-port transaxillary access instead of the standard two 5-mm incisions. The level of sympathetic clipping for PPAH was R3+4(top and bottom); in patients who complained associated facial or plantar hyperhidrosis R2-bottom and R5-top were clipped, respectively. Seventy-five patients completed bilateral surgery.

RESULTS

There were no significant differences between single-port and biportal video-assisted thoracoscopic surgery in terms of operative times and postoperative results. At a mean follow-up of 72 (SD: 26) months, CS was reported in 42 (56%) patients, severe only in 6 (8%). It was higher in the case of R2-bottom clipping (P=0.03). Thirty-one of 60 (51.6%) patients who had a plantar hyperhidrosis declared an improvement of feet sweating after surgery. Postoperative satisfaction was excellent (86.11% on a 0 to 100 scale) and 95.4% of patients declared an improvement in QoL, which was statistically significant in all evaluated parameters. These results were not related to the level of clipping.

CONCLUSION

Thoracoscopic R3 to R4 clipping appears to be a safe and effective treatment for PPAH. Although postoperative CS was common and higher after R2-bottom clipping, this did not seem to affect patients' satisfaction and improvement in QoL.

Electrophysiological evaluation of efficacy of clipping in thoracic sympathectomy: An experimental cadaveric study

Background

This study aims to examine the efficacy of clipping in thoracic sympathectomy based on electrophysiological evaluation and to investigate whether nerve conduction can be formed by collateral nerve extensions as a result of the clipping procedure to different levels of sympathetic nerve.

Methods

Newly sacrificed six sheep hemithoraces were studied between August 2016 and October 2016. Thoracic sympathectomy was performed by clipping at T2, T3, T4, and T5 sympathetic chain levels and their branches. Electrophysiological studies were performed with an electromyography device and the filter range was 1 Hz with 20 μV/D amplification. Signals were processed digitally; bipolar subdermal needle electrodes were used as stimulation and recording electrodes (Ø 0.75 mm); and the ground electrode was placed in the intercostal muscle where the thoracic sympathectomy procedure would be performed.

Results

Electrophysiological evaluations showed that clips placed on the main sympathetic chain branches and sympathetic nerve trunk prevented collateral impulse conduction and stimulated potentials were not recorded. However, sympathetic conduction continued at the same intensity after removal of the clips.

Conclusion

Clipping of different regions of the sympathetic nerve provides electrophysiological blockage of the sympathetic nerve, and conduction continues after removal of the clips. However, the shortand long-term postoperative electrophysiological results after removal of the clips over the sympathetic nerve is still a question mark.

Selective block of grey communicantes in upper thoracic sympathectomy. A feasibility study on human cadaveric specimens

Background: Sympathetic chain interruption is the gold standard treatment for essential hyperhidrosis. Postoperative compensatory hyperhidrosis, the main reason for patients' dissatisfaction, is reduced by selectively lesioning white and grey rami communicantes (ramicotomy).Objective: To develop an endoscopic surgical technique that interrupts only T₃ and T₄ grey rami communicantes to minimize compensatory hyperhidrosis.Material and Methods: T₃ and T₄ grey rami communicantes ramicotomy in fifteen cold-preserved cadavers through a uniportal axillary endoscopic approach. The sympathetic chain, its ganglia, and white rami communicantes were left intact. On opening the chest, the sympathetic chain, rami communicantes and ganglia were dissected, photographed, measured and excised for histological examination.Results: Dissecting the grey rami communicantes is feasible as they consistently lie between the intercostal nerve and the homonymous sympathetic ganglion. At some levels, Kuntz nerves, as well as more than one grey ramus communicans, can be found. White rami communicantes are more medial, therefore damaging them can be avoided. Intercostal veins can be obstructive, but these can be controlled via coagulation or clipping if necessary.Conclusion: Uniportal endoscopic selective excision of the T₃ and T₄ grey rami communicantes is feasible without damaging the white rami communicantes, the sympathetic chain or its ganglia. Clipping the grey rami communicantes is technically possible but not reliable due to their thin diameter. This study confirms that T₃ and T₄ grey rami sympathetic block is technically feasible. Its application might reduce compensatory hyperhidrosis, but clinical studies are needed.

Effectiveness of bilateral clipping of the thoracic sympathetic chain for the treatment of severe palmar and/or axillary hyperhidrosis and facial flushing

INTRODUCTION

Division of the thoracic sympathetic chain is the standard treatment for severe palmar and/or axillary hyperhidrosis and facial flushing. Clipping is an alternative option which allows the block to be reverted in cases of intolerable compensatory sweating.

METHODS

This is a prospective study performed to assess: a) results of clipping of the thoracic sympathetic chain in patients with palmar and/or axillary hyperhidrosis and facial flushing; and b) to determine the improvement obtained after removal of the clip in patients with unbearable compensatory sweating. We included 299 patients (598 procedures) diagnosed with palmar hyperhidrosis (n=110), palmar and/or axillary hyperhidrosis (n=78), axillary hyperhidrosis (n=35), and facial flushing (n=76), who underwent videothoracoscopic clipping between 2007 and 2015.

RESULTS

128 men and 171 women were treated, with mean age of 28 years. A total of 290 patients (97.0%) were discharged within 24hours. The procedure was effective in 92.3% (99.1% in palmar hyperhidrosis, 96,1% in palmar and/or axillary hyperhidrosis, 74.3% in axillary hyperhidrosis, and 86.8% in facial flushing). Nine patients (3%) presented minor complications. Compensatory sweating developed in 137 patients (45.8%): moderate in 113 (37.8%), severe in 16 (5.3%) and unbearable in 8 (2.7%). The clip was removed in these 8 patients; symptoms improved in 5 (62.8%), with sustained effect on hyperhidrosis in 4 of them.

CONCLUSIONS

Clipping of the thoracic sympathetic chain is an effective and safe procedure. If incapacitating compensatory sweating develops, this technique allows the clips to be removed with reversion of symptoms in a considerable number of patients.

Can we predict the compensatory hyperhidrosis following a thoracic sympathectomy?

Background

Primary hyperhidrosis is a functionally and socially disabling condition resulting in social embarrassment and low quality of life. Thoracic sympathectomy is a definitive choice of treatment with favorable results. However, patients may face another embarrassing condition following surgery as compensatory hyperhidrosis which has no definitive treatment. The predictors of compensatory hyperhidrosis are controversial and remain unclear.

Patients and methods

A total of 74 patients underwent a videothoracoscopic sympathectomy for primary hyperhidrosis. We statistically analyzed our patients with correlations and uni-multivariate logistic regression models to outline the possible predictors of compensatory hyperhidrosis.

Results

A total of 45 (60.8%) patients had compensatory hyperhidrosis. The correlations showed that patients, with age greater than 21 years (P = 0.018), with body mass index (BMI) greater than 22 kg / m² (P = 0.045), with isolated facial hyperhidrosis (P = 0.044), and with smoking status (P = 0.015), had significantly greater rates of compensatory hyperhidrosis. Similarly, the significant univariate predictors of compensatory hyperhidrosis were age > 21 (P = 0.020), BMI > 22 kg / m² (P = 0.048), and the presence of smoking status (P = 0.015). Multivariate analysis revealed only smoking as a predictor within the threshold of significance (P = 0.078).

Conclusion

The clinical predictors of compensatory hyperhidrosis following a thoracic sympathectomy appear as older age, greater body mass index, and smoking.

Impact of Thoracoscopic T2 Sympathectomy on Patients With Primary Palmar and Axillary Hyperhidrosis

BACKGROUND

There are different techniques for thoracoscopic sympathectomy for management of primary hyperhidrosis. Each technique has the advantage of giving good surgical results, but may cause complications, which depend on the level of sympathectomy used in each technique.

METHODS

From October 2012 to August 2016, a total number of 120 patients (of primary palmar and axillary hyperhidrosis) were enrolled in this prospective randomized study. Patients were randomized preoperatively and divided into 2 groups: group A (underwent T2, T3, and T4 sympathectomy) and group B (underwent T3 and T4 sympathectomy) with 1 year of follow-up. Improvement of palm sweating, development of complications, patient satisfaction, and quality of life were evaluated.

RESULTS

Family history was positive in 33 patients (55%) in group A and in 31 patients (52%) in group B. All patients had improvement of hand sweating. Overdry hands were significant in group A (p = 0.032). Compensatory sweating was significant in group A after the first month (p = 0.016), after 6 months (p = 0.022), and after 12 months (p = 0.025). In group B, very satisfied patients were significant after 6 and 12 months (p = 0.002 and 0.000, respectively).

CONCLUSIONS

Limited sympathectomy to the level of T3 and T4 has the same therapeutic effect obtained by T2, T3, and T4 sympathectomy with less complications, greater patient satisfaction, and better quality of life. It should be the technique of choice for treatment of primary palmar and axillary hyperhidrosis.

Thoracic sympathectomy for hyperhidrosis: from surgical indications to clinical results

Sympathectomy and its variations have been performed in thoracic surgery for more than 100 years. However, its indications have undergone profound modifications in this period. Likewise, since then the surgical technique has also evolved dramatically up to the minimally invasive techniques worldwide accessible in present days. Currently, primary hyperhidrosis is, by far, the main indication for thoracic sympathectomy and this procedure is usually carried out thoracoscopically with excellent results. However, until today, hyperhidrosis is a part of thoracic surgery still surrounded by controversy, persisting as an open field over which some confusion still resides regarding its pathophysiology, terms definitions and operative approaches. The aim of this article is to provide a wide but easily comprehensible review of the theme, discussing and clarifying the major concepts with respect to its clinical presentation, all the presently available treatment options and strategies with their potential benefits and risks, the adequate patient selection for sympathectomy, as well as the postoperative clinical results.

Reversibility of Sympathectomy for Primary Hyperhidrosis

Endoscopic thoracic sympathectomy (ETS) is an effective treatment of primary hyperhidrosis of the face, upper extremities, and axillae. The major limitation is the side effect of compensatory sweating severe enough that patients request reversal in up to 10% of cases. When ETS is performed by cutting the sympathetic chain, reversal requires nerve grafting. However, for ETS done with clips, reversal is a simple thoracoscopic outpatient procedure of removing the clips. Subsequent reversal of the sympathectomy, ie, nerve regeneration, is successful in many cases. However, follow-up is short. Factors contributing to success rates require further study.

The efficacy of oral anticholinergics for sympathetic overactivity in a thoracic surgery clinic

OBJECTIVE

Little is known of the success rates of oral anticholinergics for the treatment of primary hyperhidrosis and facial blushing as alternatives to surgical intervention. We examine predictors of success with these medications.

METHODS

A retrospective review was performed at a single institution, including all patients presenting with symptoms of primary hyperhidrosis, facial blushing, or both from 2004 to 2015. All patients were offered a trial of oral anticholinergics. If oral anticholinergic therapy was not successful, patients were offered surgery. Statistical analyses were performed to compare patients who declined surgery given the trial of oral anticholinergics with those who proceeded with surgery.

RESULTS

A total of 381 patients presented with symptoms of primary hyperhidrosis (86.6%), facial blushing (2.4%), or both (11.0%). A total of 230 patients (60.4%) declined surgery after using oral anticholinergics, and 151 patients (39.6%) chose surgery. Patients who declined surgery were more likely to have symptoms of primary hyperhidrosis without facial blushing (89.6% vs 82.1%; P = .02) or have primary symptoms involving the axilla, torso, scalp, or groin. Patients who proceeded with surgery had higher rates of palmar symptoms as a primary site (77.6% vs 61.1%; P = .01) and were more likely to have facial blushing alone or in combination with primary hyperhidrosis. Presentation with palmar symptoms and greater number of prior therapy attempts were independent predictors of proceeding with surgery after controlling for concomitant symptom type and location (P = .01 and P < .0001, respectively).

CONCLUSIONS

The majority of patients presenting with sympathetic overactivity decline surgery when a trial of oral anticholinergics is included in the treatment algorithm. Facial blushing and palmar symptoms were each associated with choosing surgery.