Maze operation is done in which of the following condition
Surgical ablation of AF is typically performed at the time of other cardiac valve or coronary aery surgery and, less commonly, as a stand-alone procedure. The Cox surgical Maze procedure is designed to interrupt all macroreentrant circuits that might potentially develop in the atria, thereby precluding the ability of the atria to fibrillate.
Atrial fibrillation
Complete hea block
Ebstein anomaly
Truncus aeriosus
Cardio thoracic surgery  