Localized reentrant tachycardia in the aorta contiguity region mimicking perimitral atrial flutter in the context of atrial fibrillation ablation.
We describe a case with a focal atrial tachycardia (AT) masquerading as perimitral atrial flutter revealed after circumferential pulmonary vein antral isolation for atrial fibrillation. It was successfully terminated and became noninducible by a point ablation on the left atrial anterior wall (LAAW) near the mitral annulus in contact with the aortic root and on the left superior pulmonary vein-left atrial appendage ridge, without any linear ablation, using electroanatomical mapping and conventional precise mapping with a maximum amplified gain within the low-voltage area. The AT revealed in our case was an LAAW-aorta contiguity area-related AT.
Department of Cardiology, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan. koichiro@qf6.so-net.ne.jp
Koichiro
K
Ejima
Morio
M
Shoda
Shinsuke
S
Miyazaki
Bun
B
Yashiro
Osamu
O
Wakisaka
Tetsuyuki
T
Manaka
Nobuhisa
N
Hagiwara
D000200:Action Potentials; D000368:Aged; D001281:Atrial Fibrillation / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D001282:Atrial Flutter / Q000175:diagnosis* / Q000503:physiopathology; D017115:Catheter Ablation / Q000009:adverse effects*; D022062:Electrophysiologic Techniques, Cardiac; D006801:Humans; D008297:Male; D011237:Predictive Value of Tests; D011667:Pulmonary Veins / Q000503:physiopathology / Q000601:surgery; D013617:Tachycardia, Supraventricular / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology / Q000601:surgery