Radiofrequency ablation of swallowing-induced atrial tachycardia: case report and review of literature.

We report the case of a 47-year-old white man who presented with 1-year history of palpitations while swallowing. Event monitor confirmed the episodes were atrial tachycardia. Medical management with a calcium channel blocker did not alleviate the patient's symptoms. Gastrointestinal endoscopy did not reveal any abnormality. Electrophysiologic study was performed to identify and map the tachycardia. Swallowing during the procedure was used to repeatedly induce the tachycardia. A focal right atrial tachycardia that was mapped to the lower posterior right atrium was successfully ablated. Follow-up at 6 months and 1 year showed complete resolution of symptoms. An in-depth review of the literature and all published case reports of swallowing-induced atrial tachycardia is presented, and possible mechanisms of this rare form of tachycardia are discussed.