Double-Chambered Right Ventricle with Transient 2:1 Atrioventricular Block: A Rare Presentation.

We report herein a case of 35-year-old male with a history of complex congenital heart disease, consisting of double-chambered right ventricle (DCRV) with ventricular septal defect and presenting with transient 2:1 atrioventricular (AV) block on electrocardiogram. This unique presentation has not yet been described in literature, hence it was worth describing this rare complication of DCRV.