Korean J Intern Med.  2005 Mar;20(1):68-71. 10.3904/kjim.2005.20.1.68.

Cases of Swallow Syncope Induced by the Activation of Mechanorecepters in the Lower Esophagus

Affiliations
  • 1Division of Cardiology, Department of Internal Medicine, Seoul Adventist Hospital, Seoul, Korea.
  • 2Division of Cardiology, Department of Internal Medicine, Seoul Paik Hospital, Inje University, Seoul, Korea.whcho@inje.ac.kr

Abstract

Swallowing is a rare cause of neurally mediated syncope. The mechanism of swallow syncope that contributes to hypotension, bradycardia, or to both is complex. A 59-year-old man had experienced a recurrent loss of consciousness during swallowing of carbonated beverages or sticky foods. Another 59-year-old man had complained of intermittent syncope just after eating foods. These two patients had no significant structural or functional abnormalities in the esophagus or heart. Both cases showed bradycardia when the lower esophagus was stretched by balloon inflation. The activation of mechanoreceptors in the lower esophagus can be regarded as an initiating factor of these cardioinhibitions. The patients were treated with permanent pacemaker implantation and instructed to change eating habits, respectively.

Keyword

Swallow syncope; Mechanoreceptors; Esophagus

MeSH Terms

Bradycardia/etiology
Deglutition/*physiology
Esophagus/*innervation
Humans
Male
Mechanoreceptors/*physiology
Middle Aged
Syncope/*etiology
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