消融慢径对房室结传导功能影响的探讨  

To investigate the change of atrioventricular conduction function after slow-pathway modification by selective radiofrequency catheter ablation

作　　者：何柳平[1] 邓靖[1] 

机构地区：[1]广西医科大学第四附属医院心内科,广西柳州545005

出　　处：《华夏医学》2010年第3期261-263,共3页Acta Medicinae Sinica

摘　　要：目的:通过对慢-快型房室结折返性心动过速(AVNRT)患者行慢径路射频消融治疗,观察消融术前、后房室传导功能的变化情况。方法:86例确诊慢-快型房室结双径路伴房室结折返性心动过速患者进行房室结慢径消融,术前术后分别检测心率(HR)、PR间期、房室结前传文氏点(AVN-VKB)、快径有效不应期(ERP-FP)、心房不应期(A-ERP),观察慢径消融对房室结传导功能的影响。结果:消融后心率增快,PR间期、AVN-WKB、ERP-FP缩短,与消融前比较统计学上有显著差异性(P<0.05),而A-ERP消融前后无差异(P>0.05)。结论:慢径的消融成功改善了快径的传导功能。提示房室结双径路是彼此有相互关联的两条径路,而慢径的存在可能在一定程度上抑制快径的传导功能。Objective： To compare the differences of atrioventricular conduction function before and after slow pathway modification by Radiofrequency catheter ablation（RFCA）.Methods： 86 cases were diagnosed dual atrioventricular node pathways with slow-fast type atrioventricular node reentry tachycardia.Electrophysiologic parameters were recorded before and after slow pathway modification by radiofrequency catheter ablation（RFCA）： Atrial effecter refractory periodicity（A-ERP）,AV node Wenckebach（AVN-WKB）,Atrioventricular node effecter refractory period-fast pathway（ERP-FP）,Heart Rate（HR）,PR-interval.Results： HR increased quickly,PR-interval,AVN-WKB and ERP-FP shortened post ablation.There was no significant difference in Atrial ERP（P〈0.05）,but significant differences in ERP-FP, AVN-WKB and HR（P〈0.05） pre and post ablation.Conclusion： The conduction function of fast pathway can be improved after slow pathway modification by RFCA.It prompts slow pathway to influence fast pathway in a certain extent,and they are closely connected with each other.

关 键 词：心动过速 房室结折返 导管射频消融 房室传导功能 

分 类 号：R454[医药卫生—治疗学] R541.76[医药卫生—临床医学]