Why the study?
Characteristics, mechanisms, and long-term ablation outcomes of atrial tachycardias after rheumatic mitral valvular surgery and concomitant Cox-MAZE IV procedure were not well established.
Does catheter-based mapping and ablation improve sinus rhythm maintenance in patients with atrial tachycardia after rheumatic mitral valvular surgery and Cox-MAZE IV procedure?
Does catheter-based mapping and ablation improve sinus rhythm maintenance in patients with atrial tachycardia after rheumatic mitral valvular surgery and Cox-MAZE IV procedure?
Catheter ablation is an effective and safe long-term treatment for recurrent atrial tachycardias following rheumatic mitral valve surgery and Cox-MAZE IV procedure, which are predominantly macro-reentrant and related to prior surgical lesions.
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AT ablation may target LA reentry in refractory post-RMV/Maze cases; leaves open randomized outcome trials.
Zhan et al. (2018) studied this question.
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