What is an ICD?

An internal cardiac defibrillator, also known as an implantable cardioverter defibrillator (ICD), is a small device placed inside the chest to monitor and treat life-threatening heart rhythms. The ICD continuously tracks the heartbeat and delivers an electric shock when it detects dangerously fast or irregular rhythms.

Why is an ICD Needed?

Some people are at risk of sudden cardiac arrest due to serious arrhythmias such as ventricular tachycardia or ventricular fibrillation. For these patients, an ICD offers immediate protection—often before emergency help arrives.

How is an ICD Implanted?

The procedure is typically performed under light anesthesia. Thin wires are guided through a vein into the heart and connected to the ICD, which is placed under the skin of the chest. Most patients return home within a day or two.

Living with an ICD

The ICD works quietly in the background, offering constant protection. With routine follow-ups and healthy lifestyle habits, most patients live active, confident lives.