ABSTRACT
The implantable cardioverter defibrillator (ICD) is a therapeutic device that can detect ventricular tachycardia or fibrillation and automatically deliver high-voltage (750 V) shocks that will restore normal sinus rhythm. Advanced versions also provide low-voltage (5 to 10 V) pacing stimuli for painless termination of ventricular tachycardia and for management of bradyarrhythmias. The proven efficacy of the automatic implantable defibrillator has placed it in the mainstream of therapies for the prevention of sudden arrhythmic cardiac death.
