房室结改良术终点、快径传导功能与复发率三者关系的回顾性研究(摘要)
作者：袁义强 刘怀霖 李靖
单位：河南省，郑州市第七人民医院 郑州市心血管病研究所(450006)
关键词：
目的 目的：探讨射频导管消融术(RFCA)房室结慢径终点、快径前向传导功能与心动过速复发三者的关系。
方法：对71例经系统电生理检查、RFCA证实为房室结折返性心动过速(AVNRT)的患者根据消融终点分为3组：①A组，为41例慢径消融后慢径完全消失患者；②B组，为16例慢径消融后慢径尚残存，但无心房回波患者；③C组，为14例慢径消融后慢径残存且有一个心房回波患者。对以上3组患者进行回顾性研究，探讨慢径消融终点、房室结快径传导功能及复发率三者关系。
结果：①A组和B组，慢径消融后其快径前传功能不应期和有效不应期明显缩短，随访期间无心动过速发作；②C组，慢径消融后其快径前传功能不应期和有效不应期缩短不明显，随访期间有5例复发心动过速。
, 百拇医药
结论：房室结双径路是彼此关联的两条径路，功能慢径的存在可能在一定程度上抑制快径的传导功能；AVNRT慢径消融最好达到慢径消失，若慢径残存，最好消融到无心房回波和快径传导功能明显改善。
A Retrospective Study of Correlation among Ends of Radiofreqency Atrioventricular Node Modification, Conduction Function of Fast Pathway and Recurrence Rate (Abstract)
Cardiovasular Institute, The Seventh Hospital of Zhengzhou, Zhengzhou (450006), He′nan
Yuan Yiqiang, Liu Huailing, Li Jing.
, 百拇医药
Objective: To study the correlation among ends of radiofreqency catheter ablation (RFCA) of slow pathway of atrioventricular node, forward conduction function of fast pathway and recurrence rate of tachycardia.
Methods: Seventy-one patients, who had identified atrioventricular node reentrant tachycardia (AVNRT) by systemic electrophysiological examination and RFCA, were classified into three groups: ① Group A, 41 patients with slow pathways completely disappeared after atrioventricular node modification; ② Group B, 16 patients with slow pathways still remained, but no atrial echo; ③ Group C, 14 patients had slow pathway and atrial echo. The ends of slow pathway ablation, conduction function of atrioventricular node fast pathway and recurrence rate were studied retrospectively.
, http://www.100md.com
Results: ① Groups A and B: Functional refractory period and effective refractory period obviously shortened after slow pathway ablation, no tachycardia reoccurred during follow-up; ② Group C: Functional refractory period and effective refractory period showed no obvious shortening after slow pathway ablation, tachycardia reoccurred in 5 patients during follow-up.
Conclusion: Dual atrioventricular node pathways are two pathways related to each other and slow pathway probablely inhibit conduction function of the fast pathway. AVNRT modification should have the end without slow pathway, if slow pathway remains, the modification should have the end without atrial echos or obviously improved conduction function of the fast pathway., http://www.100md.com
单位：河南省，郑州市第七人民医院 郑州市心血管病研究所(450006)
关键词：
目的 目的：探讨射频导管消融术(RFCA)房室结慢径终点、快径前向传导功能与心动过速复发三者的关系。
方法：对71例经系统电生理检查、RFCA证实为房室结折返性心动过速(AVNRT)的患者根据消融终点分为3组：①A组，为41例慢径消融后慢径完全消失患者；②B组，为16例慢径消融后慢径尚残存，但无心房回波患者；③C组，为14例慢径消融后慢径残存且有一个心房回波患者。对以上3组患者进行回顾性研究，探讨慢径消融终点、房室结快径传导功能及复发率三者关系。
结果：①A组和B组，慢径消融后其快径前传功能不应期和有效不应期明显缩短，随访期间无心动过速发作；②C组，慢径消融后其快径前传功能不应期和有效不应期缩短不明显，随访期间有5例复发心动过速。
, 百拇医药
结论：房室结双径路是彼此关联的两条径路，功能慢径的存在可能在一定程度上抑制快径的传导功能；AVNRT慢径消融最好达到慢径消失，若慢径残存，最好消融到无心房回波和快径传导功能明显改善。
A Retrospective Study of Correlation among Ends of Radiofreqency Atrioventricular Node Modification, Conduction Function of Fast Pathway and Recurrence Rate (Abstract)
Cardiovasular Institute, The Seventh Hospital of Zhengzhou, Zhengzhou (450006), He′nan
Yuan Yiqiang, Liu Huailing, Li Jing.
, 百拇医药
Objective: To study the correlation among ends of radiofreqency catheter ablation (RFCA) of slow pathway of atrioventricular node, forward conduction function of fast pathway and recurrence rate of tachycardia.
Methods: Seventy-one patients, who had identified atrioventricular node reentrant tachycardia (AVNRT) by systemic electrophysiological examination and RFCA, were classified into three groups: ① Group A, 41 patients with slow pathways completely disappeared after atrioventricular node modification; ② Group B, 16 patients with slow pathways still remained, but no atrial echo; ③ Group C, 14 patients had slow pathway and atrial echo. The ends of slow pathway ablation, conduction function of atrioventricular node fast pathway and recurrence rate were studied retrospectively.
, http://www.100md.com
Results: ① Groups A and B: Functional refractory period and effective refractory period obviously shortened after slow pathway ablation, no tachycardia reoccurred during follow-up; ② Group C: Functional refractory period and effective refractory period showed no obvious shortening after slow pathway ablation, tachycardia reoccurred in 5 patients during follow-up.
Conclusion: Dual atrioventricular node pathways are two pathways related to each other and slow pathway probablely inhibit conduction function of the fast pathway. AVNRT modification should have the end without slow pathway, if slow pathway remains, the modification should have the end without atrial echos or obviously improved conduction function of the fast pathway., http://www.100md.com