
Keywords: AT، تاکی کاردیو دهلیزی; atrial fibrillation; epicardial mapping; Marshall bundle; peri-mitral atrial tachycardia; radiofrequency catheter ablationAF, atrial fibrillation; AT, atrial tachycardia; CFAE, complex fractionated atrial electrogram; CS, coronary sinus; LA, left atrial/a