摘要
为探讨预激综合征患者旁道蝉联现象发生的机制和临床意义,经食管电生理检查,观察到18例显性预激综合征患者旁道的蝉联现象,并分别测定旁道有效不应期和房室结的下传有效不应期。结果显示:旁道有效不应期均长于房室结下传有效不应期(分别为388.89±57.34ms和299.44±27.38ms,P<0.01)。提示:(1)旁道有效不应期长于房室结下传有效不应期是旁道蝉联现象的先决条件;(2)正常房室结的1:1传导亦是产生旁道下传蝉联现象的条件之一;(3)蝉联现象可用于解释临床上间歇性预激综合征的显现。
To investigate mechanism of accessory pathway linking and itsclinical significance in patients with preexcitation syndromes, we observed accessory pathway linking in 18 cases of overt preexcitation syndrome during transesophageal electrophysiological study, and determined antegrade effective refractory period of accessory pathway and that of normal atrioventricular (AV) pathway. Results showed that antegrade effective refractory period of accessory pathway tended to be longer than that of normal AV pathway (388.9±57. 3ms vs. 299.4±27.4ms, P < 0.01) .It indicates: (1) Longer antegrade effective refractory period than that of normal AV pathway is a prerequisite for accessory pathway linking phenomenon; (2) 1:1 AV conduction over normal AV node is one of prerequisites for antegrade linking of accessory pathway; (3) linking can be used to interpret intermittent preexcitation.
出处
《心电学杂志》
1998年第3期145-147,共3页
Journal of Electrocardiology(China)
