implantable cardioverter-defibrillator atrial tachycardia arrhythmias sustained
implantable cardioverter-defibrillator atrial tachycardia arrhythmias sustained
cardioverter-defibrillator atrial tachycardia arrhythmias ___ sustained
cardioverter-defibrillator atrial tachycardia arrhythmias ___ sustained