Key result
Verapamil relieves swallowing-induced atrial tachycardia by inducing 2:1 AV block.
Why the study?
Atrial tachycardia associated with swallowing and its underlying mechanism and treatment options were not well characterized.
Case Report (n=1)
Answers are grounded in this paper and cite their sources.
May warrant hiatal hernia evaluation in food-triggered atrial tachycardia; leaves open mechanical esophageal stimulation as trigger.
A female patient who suffered from atrial tachycardia associated with the ingestion of food or drink was examined in our department. No signs of organic heart disease were discovered, oesophageal motility was normal, but X-ray revealed a small hiatal hernia. The arrhythmia started with an atrial extrasystole arising well outside the functional refractory period of the AV node, and it could be reproduced by inflation of a balloon. It is suggested that the arrhythmia is induced by a mechanical effect of the passage of food on the left atrial wall. Several drugs were tried in order to stop or relieve the complaints. None of them prevented or stopped the atrial tachycardia but verapamil and edrophonium chloride caused 2:1 AV block, and follow-up study has shown that sufficient doses of verapamil are able to relieve the patient's complaints.
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Landmark et al. (1979) conducted a case report in Atrial tachycardia associated with swallowing (n=1). Verapamil was evaluated on Relief of complaints. Sufficient doses of verapamil relieved the patient's complaints of swallowing-induced atrial tachycardia by causing 2:1 AV block.
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