Mitral isthmus block in a case of persistent left superior vena cava.
Persistent left superior vena cava (LSVC), an uncommon venous anomaly, could be an arrhythmogenic source of atrial fibrillation. Multiple electrical connections were reported between the LSVC and the left atrium, which may negatively impact the achievement of conduction block during linear ablation of left mitral isthmus. We describe a case with perimitral atrial flutter (AFL) in a patient with isolated LSVC. AFL was successfully treated and complete perimitral conduction block was achieved following a lengthy epicardial radiofrequency application.
Miyazaki
Shinsuke
S
Hôpital Cardiologique du Haut-Lévêque and Université Victor Segalen Bordeaux II, Bordeaux-Pessac, France. mshinsuke@k3.dion.ne.jp
Derval
Nicolas
N
Shah
Ashok
A
Xhaet
Olivier
O
Haïssaguerre
Michel
M
D000368:Aged; D001282:Atrial Flutter / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D017115:Catheter Ablation; D022062:Electrophysiologic Techniques, Cardiac; D006801:Humans; D008297:Male; D016896:Treatment Outcome; D054079:Vascular Malformations / Q000150:complications* / Q000503:physiopathology; D014683:Vena Cava, Superior / Q000002:abnormalities* / Q000503:physiopathology