title: Swallowing-induced multifocal atrial tachycardia originating from right pulmonary veins.
abstract: A 64-year-old woman experienced reproducible palpitation caused by irregular atrial tachycardia (AT) while swallowing. This tachycardia was resistant to multiple antiarrhythmic drugs and β-blockers. Catheter mapping revealed right pulmonary vein (PV) firings with different activation sequences, thereby producing multifocal AT. Extensive encircling isolation of ipsilateral right PVs abolished the multifocal AT. Although isolated right PVs were captured by pacing, dissociated PV firings were not induced by swallowing after radiofrequency catheter ablation.
authors.affiliation: Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan. yokoshh@med.hokudai.ac.jp
authors.forename: Hisashi
authors.initials: H
authors.lastname: Yokoshiki
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Mitsuyama
authors.forename: Masaya
authors.initials: M
authors.lastname: Watanabe
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Tsutsui
mesh_terms: D017115:Catheter Ablation; D003679:Deglutition; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged; D011667:Pulmonary Veins / Q000503:physiopathology* / Q000601:surgery; D013617:Tachycardia, Supraventricular / Q000209:etiology* / Q000503:physiopathology* / Q000601:surgery