Conclusion CPVA guided by 3-d mapping system can be performed in CAF patients with an acceptable efficacy, but safety need to be improved.

结论三维标测系统指导下环肺静脉线性消融治疗慢性房颤疗效较好，安全性有待进一步提高。

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Objective To investigate the safety and efficacy of circumferential pulmonary vein linear ablation guided by 3-d mapping system in patients with atrial fibrillation.

目的探讨三维标测系统指导下行心房颤动(房颤)环肺静脉线性消融的安全性和有效性。

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Objective To investigate the efficacy and safety of circumferential pulmonary vein (PV) linear ablation (CPVA) guided by 3-d mapping system in patients with chronic atrial fibrillation (CAF).

目的探讨三维标测系统指导下环肺静脉线性消融治疗慢性心房颤动(房颤)的疗效和安全性。

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