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目的探讨慢电位引导的消融及不同形态慢电位在房室结折返性心动过速慢径消融时的意义。方法回顾性分析行射频消融慢径的房室结改良术治疗的54例房室结折返性心动过速患者临床资料,比较有无慢电位靶点及不同形态慢电位靶点消融时有效靶点率、首次放电成功率。结果以慢电位为靶点消融时,有效靶点率及首次放电成功率与无慢电位为靶点消融比较,差异有统计学意义(P<0.05);以碎裂型慢电位及先高频后低频心房双电位为靶点消融时,有效靶点率及首次放电成功率与先低频后高频心房双电位为靶点消融比较,差异有统计学意义(P<0.05)。结论以碎裂慢电位和先高频后低频慢电位为靶点消融时有效靶点率及成功率较高,先低频后高频慢电位可能与慢径无关;以慢电位为靶点的消融仅可作为治疗过程中的一种随机选择方法。
Objective To investigate the significance of slow potential-guided ablation and different forms of slow potentials in ablation of slow atrioventricular nodal reentrant tachycardia. Methods The clinical data of 54 patients with atrioventricular nodal reentrant tachycardia treated with radiofrequency catheter ablation and slow pathway radiofrequency ablation were retrospectively analyzed. The potential targets of slow potential and ablation of different low potential sites were compared Rate, the first discharge success rate. Results When the target was ablated with slow potential, the difference between the effective target rate and the success rate of first-time discharge and non-slow potential was statistically significant (P <0.05) After low-frequency atrial bi-potential ablation, the effective target rate and the success rate of first discharge and the first low-frequency high-frequency atrial bi-potential as target ablation, the difference was statistically significant (P <0.05). Conclusions The effective target rate and success rate are high when the target is ablated with low-frequency and low-frequency fragmentation. The low-frequency high-frequency slow potential may have nothing to do with slow pathway. The slow-potential ablation Only as a randomized treatment of the process.