Cardiac pacemaker malfunction | Ventriculoperitoneal shunt malfunction | Implantable defibrillator malfunction | Inappropriate pacemaker firing | Device malfunction | Peritoneal catheter dysfunction | Drug delivery system malfunction | Prosthesis closing defect | Prosthesis opening defect | Mechanical device firing issue | Prosthetic cardiac valve malfunction | Incomplete device expansion | Automated external defibrillator malfunction | Device motor malfunction |