title: Non-contact three-dimensional mapping and ablation of swallowing-induced atrial tachyarrhythmias: two case reports.
abstract: We describe two cases of swallowing-induced tachyarrhythmias that were cured by radiofrequency ablation (RFCA) using a non-contact mapping system (NCMS). In both patients, tachyarrhythmias occurred during swallowing solids and liquids, and mapping and ablation of the arrhythmia using the NCMS was attempted during swallowing a rice ball. During a premature atrial contraction shortly after the swallow, the earliest endocardial breakthrough occurred at the right superior pulmonary vein (PV) ostium in Case 1 and at the left superior PV ostium and postero-inferior right atrium in Case 2. Guided by the NCMS catheter navigation system, the ablation catheter was easily and precisely positioned at a site where the earliest endocardial breakthrough occurred. RFCA at that site resulted in success and no recurrence or complications occurred during the follow-up in either patient.
authors.affiliation: Division of Cardiology, Gunma Prefectural Cardiovascular Center, Maebashi, Gunma, Japan. htada@umich.edu
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tada
authors.forename: Kenichi
authors.initials: K
authors.lastname: Kaseno
authors.forename: Shigeto
authors.initials: S
authors.lastname: Naito
authors.forename: Shigeru
authors.initials: S
authors.lastname: Oshima
mesh_terms: D000368:Aged; D017115:Catheter Ablation / Q000379:methods*; D003680:Deglutition Disorders / Q000150:complications*; D022062:Electrophysiologic Techniques, Cardiac / Q000379:methods*; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D013612:Tachycardia, Ectopic Atrial / Q000175:diagnosis / Q000209:etiology* / Q000601:surgery*; D016896:Treatment Outcome