Wolff-Parkinson-White Presenting as QRS Alternans and Other Differential Diagnoses in a Large Pre-Participation ECG Screening Cohort.
Daniel Yan Zheng LimWilbert H H HoLuokai WangWee Kiat AngNishanth ThiagarajanGerald Gr SngHankun WangWesley Tw LooLim Huai YangWeien ChowTerrance J ChuaTee Joo YeoPaul LimThuan Tee Daniel ChongPublished in: Arquivos brasileiros de cardiologia (2022)
WPW alternans is a variant of intermittent WPW, which comprised 2.2% of WPW cases in our pre-participation screening cohort. It does not necessarily indicate a low risk for supraventricular tachycardia. It must be recognized at ECG screening and distinguished from other pathologies that also present with QRS alternans.