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目的：在三维立体标测系统(Carto-Merge)指导下进行环肺静脉线性消融隔离治疗房颤。方法：5例房颤患者(阵发性4例,持续性1例),术前行64排CT检查,重建出的左心房及肺静脉三维图像,在Carto-Merge指导下与患者的心脏解剖结构精确融合,在三维融合图上环肺静脉口周消融,实现肺静脉与左房电隔离。结果：5例患者全部完成预定线性消融,随访3个月4例无房颤发作,1例患者(持续性房颤)术后服用胺碘酮偶有阵发性房颤发作,3个月后无房早及房颤发作；1例患者发生心包填塞并发症；所有患者均无血栓及肺静脉狭窄并发症。结论：三维立体标测系统(Carto-Merge)指导下进行环肺静脉线性消融隔离治疗房颤安全有效。
OBJECTIVE: To perform atrial fibrillation by circumferential pulmonary vein ablation under the guidance of Carto-Merge system. Methods: Five patients with atrial fibrillation (paroxysmal 4 cases, persistent one case) underwent a 64-slice CT scan before reconstruction. The three-dimensional images of the left atrium and pulmonary veins were reconstructed under the guidance of Carto-Merge with the patient’s cardiac anatomy Precisely integrated, in the three-dimensional fusion map perioral pulmonary vein ablation, pulmonary ventricular isolation and left atrial electrical isolation. Results: All 5 patients were scheduled for linear ablation. Four patients were followed up for 3 months without atrial fibrillation. One patient (persistent atrial fibrillation) was treated with amiodarone after paroxysmal atrial fibrillation. After 3 months No room early and atrial fibrillation onset; 1 patient with pericardial tamponade complications; no thrombosis and pulmonary vein stenosis in all patients. Conclusion: It is safe and effective to treat the atrial fibrillation by circular ablation of the pulmonary vein under the guidance of Carto-Merge system.