Transient under-sensing of the ventricular lead during abdominal ultrasound as cause of ventricular fibrillation.

Pacemaker-induced arrhythmias represent a very rare complication. Algorithm-induced ventricular tachycardias have been described but this report is the first to describe a ventricular fibrillation caused by transient undersensing of the ventricular lead during an abdominal ultrasound.