Case report Advanced symptomatic atrioventricular block as a complication after transcatheter occlusion of secundum atrial septal defect in a 40-year-old woman with prior left bundle branch block

Abstract

We report a case of a woman with a left bundle branch block and secundum atrial septal defect (ASD) who uderwent transcatheter occlusion using Amplatzer device. The patient was treated with antyarrhythmic drugs because of paroxysmal atrial flutter. One and a half month later the patient developed a second degree atrioventricular block. Temporary pacing was introduced, followed by a dual-chamber pacemaker implantation due to recurrent symptomatic atrioventricular block. An association between conduction disorders, the use of antyarrhythmic drugs and the complications after ASD closure is discussed.