Late high degree atrioventricular block after percutaneous closure of a perimembranous ventricular septal defect

Atrioventricular block is an important complication after percutaneous closure of perimembranous ventricular septal defects. In the majority of cases, it appears in early or in the midterm of closure. We present a patient who developed symptomatic Mobitz 2 second-degree atrioventricular block 3 years following percutaneous closure of such a defect.