论文部分内容阅读
目的:检测房室结折返性心动过速(ANRT)慢径路消融期间常见的结性心动过速的周长(CLJT),以探讨手术期问发生的CLJT与发生房室传导阻滞(AVB)的关系。方法:回顾性分析86例经慢径路改良治疗的ANRT患者的资料。结果:在射频消融期间,86例术中有83例出现了结性心动过速。其中8例出现了AVB(Ⅰ度6例,Ⅲ度2例),另有12例出现了逆行性结一房传导阻滞。在这20例传导阻滞患者中,结性心动过速属于快速性的,其最小周长为301±51 ms;其它63例其最小周长显著延长(529±118 ms,P<0.0001)。结论:慢径路改良治疗期间所见的周长在350 ms以下的快速结性心动过速预示传导阻滞,为了防止AVB的发生应立即终止射频消融。
OBJECTIVE: To determine the CLJT of common atrioventricular tachycardia during ablation of atrioventricular nodal reentrant tachycardia (ANRT) in order to investigate the relationship between CLJT and the occurrence of atrioventricular block (AVB) Relationship. Methods: A retrospective analysis of 86 cases of ANRT patients treated by slow lane improvement. Results: During radiofrequency ablation, 83 of 86 patients developed tachycardia. Among them, AVB occurred in 8 cases (6 cases of degree Ⅰ and 2 cases of degree Ⅲ), and another 12 cases had retrograde node-block conduction block. Among the 20 patients with conduction block, nodal tachycardia was rapid with a minimum circumference of 301 ± 51 ms; the other 63 patients had a significantly longer minimum circumference (529 ± 118 ms, P <0.0001). CONCLUSION: Rapid-tachycardia with a circumference of less than 350 ms, as seen during slow pathway modification, predicts conduction block and radiofrequency ablation should be terminated immediately to prevent AVB.