关键词: Case report Conduction system Junctional ectopic beats Pre-participation screening Ventricular arrhythmias

来  源:   DOI:10.1093/ehjcr/ytae012   PDF(Pubmed)

Abstract:
UNASSIGNED: In young competitive athletes, ventricular arrhythmias could be a reason for concern as they may represent the sign of a serious underlying cardiac condition. On the other hand, atrial or conduction system premature beats are usually benign. However, when the properties of the His-Purkinje system lead to conduction aberrancies, there is a risk of misinterpreting benign arrhythmias as potentially at risk ventricular ectopic beats.
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.
摘要:
在年轻的竞技运动员中,室性心律失常可能是引起关注的原因,因为它们可能代表严重的潜在心脏病的征兆。另一方面,心房或传导系统早搏通常是良性的。然而,当His-Purkinje系统的特性导致传导异常时,良性心律失常有可能被误解为有潜在风险的室性异位搏动.
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。
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