An implantable cardioverter-defibrillator (ICD) is a specialized device designed to directly treat many dysrhythmias, especially to address ventricular tachyarrhythmias (VT). ICDs have revolutionized the treatment of patients at risk for sudden cardiac death due to VT. Whereas, a permanent pacemaker is an implanted device that provides electrical stimuli, thereby causing cardiac contraction when intrinsic myocardial electrical activity is inappropriately slow or absent.
All modern ICDs are also capable of serving as a pacing device. This article gives a brief overview of indications and contraindications of both the devices, ICD, and pacemakers. Indications for ICD placement Indications for ICD implantation can be divided into two major categories: Secondary prophylaxis against sudden cardiac death ICD placement is indicated as initial therapy in survivors of cardiac arrest due to VF or…
