PDF(Pubmed)
Abstract：
In a patient who previously developed left bundle branch block after transcatheter aortic valve replacement, intermittent narrow QRS complexes were recorded on ambulatory electrocardiography monitoring. The peculiar distribution of wide and narrow QRS complexes suggested the presence of a window of supernormality in the refractory period of a branch block that on other occasions exhibited the Wenckebach phenomenon. (Level of Difficulty: Intermediate.).
摘要：
在经导管主动脉瓣置换术后先前出现左束支传导阻滞的患者中，动态心电图监测记录间歇性窄QRS波.宽QRS复合物和窄QRS复合物的特殊分布表明在分支块的不应期中存在超正常窗口，在其他情况下表现出Wenckebach现象。（难度等级：中级。).
