Swallowing-induced Paroxysmal Atrial Tachycardia Causes Weight Loss and Fainting during Mealtime: A Case Report and Literature Review

Intern Med. 2022 Dec 1;61(23):3531-3535. doi: 10.2169/internalmedicine.9305-21. Epub 2022 May 14.


Swallow or deglutition syncope is an unusual disorder. We herein report an 80-year-old man with paroxysmal atrial tachycardia induced by swallowing, causing syncope. Initially, we suspected a digestive disorder and found no significant findings. Finally, a swallowing test with monitoring of the heart rate and blood pressure helped in the diagnosis. The patient was treated with antiarrhythmic drugs and catheter ablation. The mechanism underlying swallowing-induced tachycardia presumably involves mechanical stimulation of the esophagus and autonomic nervous system effects. However, few cases have been reported, and the exact mechanism remains unclear.

Keywords: paroxysmal atrial tachycardia; swallowing-induced tachycardia; syncope; weight loss.

Publication types

  • Review
  • Case Reports

MeSH terms

  • Aged, 80 and over
  • Catheter Ablation* / adverse effects
  • Deglutition*
  • Electrocardiography
  • Humans
  • Male
  • Meals
  • Syncope / etiology
  • Weight Loss