{Reference Type}: Journal Article {Title}: Complete atrio-ventricular heart block, a not to be forgotten complication in transcatheter closure of perimembranous ventricular septal defect - a case report and review of literature. {Author}: Leong MC;Alwi M; {Journal}: Cardiol Young {Volume}: 31 {Issue}: 12 {Year}: Dec 2021 {Factor}: 1.023 {DOI}: 10.1017/S1047951121001980 {Abstract}: Device occlusion of perimembranous ventricular septal defect is gaining popularity with the emergence of newer, softer occluders and improved technical know-how. We report a 26-year-old lady with a moderate size perimembranous ventricular septal defect who had a new onset of bundle branch block shortly after device closure. The patient subsequently developed a complete atrio-ventricular heart block.