HOMEPRODUCTSSERVICESCOMPANYCONTACTFAQResearchDictionaryPharmaMobileSign Up FREE or Login

Endoscopic thoracic sympathectomy suppresses baroreflex control of heart rate in patients with essential hyperhidrosis.

AbstractUNLABELLED:
Endoscopic thoracic (T2-3 or T3-4) sympathectomy (ETS) is a highly effective treatment for palmar hyperhidrosis. Because the T2-3 or T3-4 sympathetic ganglia are involved in direct sympathetic innervation of the heart, sympathectomy at this level may alter baroreflex control of heart rate. The purpose of our study was to examine the influence of ETS on baroreflex responses to pressor and depressor stimuli under small-dose sevoflurane anesthesia. We studied 40 patients with palmar or axillary hyperhidrosis who were scheduled to receive ETS. In the ETS procedure, the sympathetic trunk was identified by using thoracic endoscopy and was transected. Before and after ETS, the pressor or depressor test was performed by using an IV infusion of phenylephrine or nitroglycerin, respectively, under small-dose general anesthesia. Baroreflex sensitivity was calculated from R-R intervals and systolic blood pressure. ETS did not change heart rate and systemic blood pressure at rest, although ETS significantly altered baroreflex in both pressor and depressor tests in all patients. Baroreflex was completely suppressed in 1 of 19 patients in the pressor test and in 9 of 21 patients in the depressor test. We conclude that baroreflex responses are suppressed in patients who receive ETS.
IMPLICATIONS:
Endoscopic thoracic sympathectomy suppressed the baroreflex control of heart rate during pressor and depressor tests in patients with palmar or axillary hyperhidrosis.
AuthorsYurie T Kawamata, Tomoyuki Kawamata, Keiichi Omote, Eiji Homma, Tatsuo Hanzawa, Toshifumi Kaneko, Akiyoshi Namiki
JournalAnesthesia and analgesia (Anesth Analg) Vol. 98 Issue 1 Pg. 37-9, table of contents (Jan 2004) ISSN: 0003-2999 [Print] United States
PMID14693579 (Publication Type: Clinical Trial, Journal Article)
Chemical References
  • Vasoconstrictor Agents
  • Phenylephrine
Topics
  • Adult
  • Baroreflex (physiology)
  • Blood Pressure (physiology)
  • Endoscopy
  • Female
  • Heart Rate (physiology)
  • Humans
  • Hyperhidrosis (physiopathology, therapy)
  • Male
  • Phenylephrine
  • Sympathectomy
  • Vasoconstrictor Agents

Join CureHunter, for free Research Interface BASIC access!

Take advantage of free CureHunter research engine access to explore the best drug and treatment options for any disease. Find out why thousands of doctors, pharma researchers and patient activists around the world use CureHunter every day.
Realize the full power of the drug-disease research network!


Choose Username:
Email:
Password:
Verify Password: