【摘要】 62例慢-快型房室结折返性心动过速（AVNRT）患者接受慢径消融治疗，评价A型终点（阻断慢径且不再诱发AVNRT）、B型终点（保留慢径的传但不再诱发AVNRT和心房回波）和C型终点（保留慢径且能诱发1～3个心房回波）对房室传导功能的影响及与AVNT复发的关系。结果：①消融后77．4％（48例）；17．7％（11例）和4．8％（3例）的病人分别达A、B和C型终点；②消融后A型终点病人的房室传导功能明显改善，B、C型变化不明显；③术后3～7天经食管电生理复查，A型终点AVNRT的再诱发率为2．1％（1例）、B型为18．2％（2例）、C型为33．3％（1例）；④41例病人保持随访8．9±7．1个月，A型终点AVNRT复发率为4．9％，B、C型为28．6％。结果揭示AVNRT慢径消融中大多数病人可达到A型终点，且彻底阻断慢径后房室传导功能明显改善，AVNRT的近期和远期复发率明显低于B到和C型终点。更多还原

【Abstract】 62 patients with atrioventricular nodal reentrant tachycardia (AVNRT) were treated with slow atrioventricular (AV) nodal pathway ablation in order to evaluate the effect of endpoint type A (no slow pathway conduction and no induclable AVNRT), B(residual slow pathway conduction but no induciable AVNRT and AVN echo) and C(residual slow pathway conduction and 1 to 3 AVN echo but no induciable AVNRT) on AV conduction and their relation with AVNRT recurrence. The results were found that: ①48(77. 4 % ),11(17. 7 % ) and 3 (4. 8 % )patients reached endpoint A,B and C respectively after procedures;②there was improvement of AV conduction in patients with endpoint type A,but no difference in patients with type B and C before and after slow pathway ablation;③all patients were received for esophageal electrophysical test 3 to 7 days after procedure and AVNRT was indtlced in 1 pntient wlth type A (2. 1 % ), 2 patients with type B (18. 2 % ),and 1 patient with type C (33. 3 % ); ④41 patients were fullowed up 8. 9±7. 1 months and AVNRT recurrence were 4. 9 % in patients with type A and 28.6% in patients with type B ancl C. It is concluded that most of the patients with AVNRT reach endpoint tyPe A after slow pathway ablation,have lmprovement of AV conduction in these patients and the recurrence rate of AVNRT may be much lower in type A than in type B and C.更多还原