Catheter ablation of atrial tachyarrhythmias after a Maze procedure: A single center experience

Publication date: Available online 20 December 2018Source: Journal of Cardiology CasesAuthor(s): Takatsugu Kajiyama, Yusuke Kondo, Marehiko Ueda, Masahiro Nakano, Miyo Nakano, Michiko Watanabe, Goro Matsumiya, Yoshio KobayashiAbstractSignificant recurrence of atrial tachyarrhythmias are observed after the surgical Cox Maze procedure (CMP). We retrospectively enrolled 11 consecutive patients who had atrial tachyarrhythmias (ATAs) that recurred after a biatrial CMP and underwent catheter ablation. Information including the site of any incomplete lesions and the etiology of the clinical ATAs was shared with the surgical team as feedback. In a total of 11 patients, 12 clinical ATAs were identified. They consisted of 2 atrial fibrillations and 10 atrial tachycardias (ATs). In 6 patients, the CMP was performed after the beginning of this investigation. In a total of 10 ATs, we diagnosed 5 mitral annular flutters, 2 roof-dependent flutters, 1 pulmonary vein (PV)-reentrant AT, and 1 localized reentrant AT. A total of 6 patients had reconnected perimitral block lines. PV reconnections were observed in 3 and posterior wall (PW) residual conduction was also observed in 3 cases. However, no residual conduction of the pulmonary vein isolation (PVI) and only 1 residual conduction of the PW were observed in 5 patients who underwent their index surgery after the beginning of this investigation. This fact may implicate that sharing the information from the electrophysiological study of postsu...
Source: Journal of Cardiology Cases - Category: Cardiology Source Type: research