Catheter ablation of atrial arrhythmias after cardiac transplantation: findings at EP study utility of 3-D mapping and outcomes.

摘要: Catheter Ablation of Atrial Arrhythmias Background Management atrial arrhythmias (AA) in orthotopic heart transplant (OHT) patients is challenging. Objective The purpose this study was to define the mechanisms these and evaluate role ablation. Methods Patients with OHT referred for ablation AA from 1999 2011 were included (n = 15). Entrainment anatomic 3-D mapping utilized identify mechanism guide ablation. Results The median time 8 years (range: 1 month–16 years). types (7%) AVNRT, 5 (33%) cavotricuspid isthmus (CTI) dependent donor flutter (AFl), 3 (20%) non-CTI-dependent AFL 3), focal tachycardia (AT) 2) 4 (27%) recipient atria conduction (RDC) that involved right anastomosis left anastamosis patient. In RDC tachycardia, performed at site earliest activation on suture line. not targeted. This resulted acute success all cases. most 12/15 (80%) only necessary. Regardless surgical technique (bicaval vs biatrial) right-sided common. Acute occurred 14/15 (93%) 3/15 required repeat Abl recurrence. There no major complications. Conclusion AA after are commonly due macroreentry, but also occur. organized usually successful low risk, warranting early consideration preference medical treatment.