DDTA mode pacing in the treatment of complete conduction block from the right atrium to the ventricles and interatrial electrical dissociation after surgical procedures

摘要

This case report describes a 61-year-old man with a complete conduction block from the right atrium to both the ventricles and interatrial electrical dissociation that developed after removal of a left atrial myxoma and a maze surgery. A pacemaker was implanted with biatrial pacing using dual-chamber DDD pacing with triggered atrial pacing (DDTA) mode to detect the right atrial potential and to pace the left atrium while simultaneously pacing the ventricles. This approach was useful for restoring the native atrioventricular conduction, based on the intrinsic pacemaker activity in the right atrium.