LAUSR

A 72-year-old male suffering from ischemic cardiomyopathy, left ventricular ejection fraction 30%, left bundle branch block and cardiac-defibrillator (ICD) with resynchronization therapy Medtronic Cardia CRT-D since June 2013, presented to a clinic 5 days after having heard a noticeable, repeating sound from his ICD. According to the patient’s history, an alert switched on shortly after he had started using a meat grinder (Fig. 1; upper panel). Although the patient had no symptoms, the alert caused him to cease working. In effect this protected the patient from inappropriate ICD shock.