Exercise-Induced Asystole with Syncope in a Healthy Young Man

Exercise-related syncope is frequently an ominous symptom associated with advanced cardiovascular disease. Asystole during or after exercise is a rare occurrence in persons with structural heart disease and is an even rarer cause of syncope in healthy persons. Herein we report on a healthy 40-year-o...

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Bibliographic Details
Published in:The American journal of the medical sciences 2007-08, Vol.334 (2), p.145-148
Main Authors: Dockery, Brian K., Newman, Kevin P.
Format: Article
Language:English
Subjects:
Adult
Asystole
Biological and medical sciences
Cardiac dysrhythmias
Cardiology. Vascular system
Exercise
Exercise - physiology
Exercise testing
General aspects
Heart
Heart Arrest - etiology
Humans
Male
Marijuana Smoking - adverse effects
Medical sciences
Syncope, Vasovagal - etiology
Syncopy
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Summary:Exercise-related syncope is frequently an ominous symptom associated with advanced cardiovascular disease. Asystole during or after exercise is a rare occurrence in persons with structural heart disease and is an even rarer cause of syncope in healthy persons. Herein we report on a healthy 40-year-old man who was hospitalized after a syncopal episode that followed playing basketball. He recalled several near-syncopal episodes after strenuous exercise over the past 6months, during which time he used marijuana. A loss of sinoatrial activity and appearance of ventricular asystole occurred immediately after monitored exercise to suggest parasympathetic dominance, which could be related to long-term cannabinoid use.
ISSN:0002-9629
1538-2990
DOI:10.1097/MAJ.0b013e31812f5105