UNASSIGNED: We described the case of a healthy young athlete with asymptomatic interpolated junctional ectopic beats interpreted as polymorphic ventricular tachycardia during pre-participation screening.
UNASSIGNED: Strange and rare electrocardiogram pictures may be observed during sport pre-participation screening. The small atrioventricular (AV) junction is made up of many specialized fibres with different conduction properties. Junctional arrhythmias can have a normal anterograde conduction or can be conducted with aberrancy. Rarely, they can be interpolated and cause PR prolongation or bundle branch block by increasing the refractory period of the AV node and/or the conduction system. When aberrancy occurs, they can be mistaken for \'atypical\' ventricular arrhythmias. Prognosis of these events remains uncertain.
■我们描述了一个健康的年轻运动员,在参与前筛查期间,无症状的插值性交界性异位搏动被解释为多形性室性心动过速。
■在运动参与前筛查期间可能会观察到奇怪和罕见的心电图图片。小房室(AV)连接处由许多具有不同传导特性的特殊纤维组成。连接性心律失常可以具有正常的顺行传导或可以异常进行。很少,它们可以被内插并通过增加房室结和/或传导系统的不应期而引起PR延长或束支传导阻滞。当异常发生时,他们可能会被误认为“非典型”室性心律失常。这些事件的预后仍不确定。