Tactics for the reduction of inappropriate implantable cardioverter defibrillator shocks.

he implantable cardioverter-defibrillator (ICD) reduces mortality when used for primary or secondary prevention of sudden cardiac death in patients at high risk for life-threatening arrhythmias. In the era of singlechamber ICD, atrial fibrillation (AF) was the most common cause of inappropriate shocks, responsible for up to 62% of these.1 The issue still constitutes a major challenge, even after the advent of dual-chamber ICD and sophisticated detection criteria/algorithms.2,3