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Autonomic function following endoscopic thoracic sympathotomy for hyperhidrosis.
MedLine Citation:
PMID:  20700640     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
PURPOSE: Primary palmar-plantar hyperhidrosis is the condition of excessive sweating of the hands and feet. For severe and medically refractory cases, endoscopic thoracic sympathotomy (ETS) is a bilateral ganglion-sparing disconnection between the stellate and T2 ganglion in an effort to minimize compensatory hyperhidrosis. The purpose of this study was to determine the effect of ETS on cardiac autonomic function.
METHODS: Participants in this study were 22 otherwise healthy hyperhidrosis patients with 17 returning 1-12 months after surgery. Heart rate (HR) and blood pressure were collected at rest and during sequential nitroprusside/phenylephrine infusion (modified Oxford). To determine change in cardiac autonomic function, heart rate variability indices of RMSSD, LF and HF (log, nu) power were calculated. Sequential baroreflex sensitivity was also calculated.
RESULTS: After surgery, resting HR on standardized ECG tended to be lower and reached significance during the modified Oxford baseline (p < 0.001). HRV changed significantly between assessments with an increase in HF (nu) and decrease in LF (nu) and LF (log) spectral ranges (p < 0.05), while the increase in RMSSD was marginally significant (p < 0.06). Compared with matched controls, HRV indices were significantly different before surgery, but similar after surgery. No change was detected in resting sequential baroreflex sensitivity, baroslope obtained by modified Oxford or QTc interval.
CONCLUSIONS: We conclude that ETS changes cardiac autonomic modulation of HR to levels similar to controls. Despite the minimally destructive nature of ETS, effects on HRV are consistent with previously reported post-sympathectomy blunting of exaggerated sympathetic control associated with hyperhidrosis. No significant changes in the baroreflex indices suggest that ETS did not significantly affect blood pressure regulation.
Authors:
John E Schmidt; Erica A Wehrwein; Lynn A Gronbach; John L D Atkinson; Robert D Fealey; Nisha Charkoudian; John H Eisenach
Publication Detail:
Type:  Journal Article     Date:  2010-08-11
Journal Detail:
Title:  Clinical autonomic research : official journal of the Clinical Autonomic Research Society     Volume:  21     ISSN:  1619-1560     ISO Abbreviation:  Clin. Auton. Res.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-02-02     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9106549     Medline TA:  Clin Auton Res     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  11-7     Citation Subset:  IM    
Affiliation:
Department of Psychiatry and Psychology, Mayo Clinic, Rochester, USA.
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