An implantable cardioverter defibrillator is a pager sized electronic device that is placed in the chest for constantly monitoring the heart rhythm. It delivers energy to the heart muscle when it detects an abnormal heart rhythm. This device prevents the risk of cardiac arrest and death that may be caused when the lower chambers of the heart stop beating effectively. This surgery is necessary when one is suffering from ventricular tachycardia or ventricular fibrillation. ICDs are highly beneficial in detecting and curbing arrhythmias (abnormal heart beats).
This device constantly monitors and restores normal heart rhythm by delivering electrical pulses when required. ICD is surgically placed under the skin below the left collarbone, and few leads run through the veins to the heart. This device contains a small computer and a battery, and the electric shocks are instantly delivered by the computer. Implantable cardioverter defibrillator is also known as defibrillators or implantable devices.