title: Focal source of atrial fibrillation arising from the ostium of the inferior vena cava.
abstract: A patient presented with paroxysmal atrial fibrillation (AF) caused by focal rapid discharges arising from the ostium of the inferior vena cava (IVC). Surface ECG showed typical features of AF and flutter when rapid activation at the IVC ostium was conducted to the right atrium in a 1-to-1 and 2-to-1 fashion, respectively. Discrete radiofrequency energy applications at the medial ostium of the IVC completely eliminated the atrial tachyarrhythmias.
authors.affiliation: Department of Cardiology, Jikei University School of Medicine, Tokyo, Japan. yamanet1@aol.com
authors.forename: Teiichi
authors.initials: T
authors.lastname: Yamane
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Miyazaki
authors.forename: Keiichi
authors.initials: K
authors.lastname: Inada
authors.forename: Seiichiro
authors.initials: S
authors.lastname: Matsuo
authors.forename: Satoru
authors.initials: S
authors.lastname: Miyanaga
authors.forename: Taro
authors.initials: T
authors.lastname: Date
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Abe
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Sugimoto
authors.forename: Seibu
authors.initials: S
authors.lastname: Mochizuki
mesh_terms: D001281:Atrial Fibrillation / Q000175:diagnosis* / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged; D013614:Tachycardia, Paroxysmal / Q000175:diagnosis* / Q000503:physiopathology; D014682:Vena Cava, Inferior / Q000503:physiopathology*