Focal source of atrial fibrillation arising from the ostium of the inferior vena cava.
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.
Yamane
Teiichi
T
Department of Cardiology, Jikei University School of Medicine, Tokyo, Japan. yamanet1@aol.com
Miyazaki
Hidekazu
H
Inada
Keiichi
K
Matsuo
Seiichiro
S
Miyanaga
Satoru
S
Date
Taro
T
Abe
Kunihiko
K
Sugimoto
Ken-ichi
K
Mochizuki
Seibu
S
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*