An implantable cardioverter defibrillator is a small device placed under the skin that watches the heart's rhythm continuously. If it detects a dangerous fast rhythm, it can pace the heart painlessly or deliver a shock to restore a normal rhythm within seconds. This can prevent sudden cardiac death. It is advised after a cardiac arrest or life-threatening rhythm and in selected people with a weak heart muscle or an inherited rhythm condition.

Patients seeking a cardiovascular specialist in Mulund for rhythm risk are assessed with echocardiography, ECG and rhythm recordings. The doctor explains the benefits, the chance of shocks, the alternatives and what the device means for daily life. Some patients feel anxious about shocks, and the doctor allows time for questions and counselling.

Implantation resembles a pacemaker procedure. It is done under local anaesthesia with sedation, through a small cut below the collarbone, with leads placed in the heart and the generator under the skin. The procedure takes one to two hours, and patients typically stay overnight. For a period, driving restrictions apply, and the doctor will advise on exercise and work. Device checks are regular, and stored rhythm data help adjust treatment.

How the Procedure Can Help

An ICD can stop a life-threatening rhythm within seconds and protects people at high risk. Knowing that the device is monitoring the heart also helps many patients and families feel more secure.

Risks and Considerations

Risks include infection, bleeding, lead problems, unnecessary shocks and anxiety about shocks. A single shock followed by feeling well should be reported to the doctor, while repeated shocks, fainting or chest pain need emergency care. The battery is replaced when it runs low, and leads may need replacement over time. Patients should carry their device card and tell doctors before MRI or surgery.