ICD Implantation (Implantable cardioverter-defibrillators)

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An implantable cardioverter-defibrillator (ICD) is a small battery-powered device placed in the chest to detect and stop irregular heartbeats (arrhythmias). An ICD continuously monitors the heartbeat and delivers electric shocks, when needed, to restore a regular heart rhythm.

Types of ICD:

An ICD is a type of cardiac therapy device. There are two basic types:

  • A traditional ICD is implanted in the chest, and the wires (leads) attach to the heart. The implant procedure requires invasive surgery.

  • A subcutaneous ICD (S-ICD) is another option that's implanted under the skin at the side of the chest below the armpit. It's attached to an electrode that runs along the breastbone. An S-ICD is larger than a traditional ICD but doesn't attach to the heart.

Why it is done?


  • A history of coronary artery disease and heart attack that has weakened the heart

  • An enlarged heart muscle

  • A genetic heart condition that increases the risk of dangerously fast heart rhythms, such as some types of long QT syndrome

  • Other rare conditions that may affect the heartbeat



Possible risks of having an ICD implanted include:


  • Infection at the implant site.

  • Swelling, bleeding, or bruising.

  • Blood vessel damage from ICD leads.

  • Bleeding around the heart can be life-threatening.

  • Blood leaks through the heart valve (regurgitation) where the ICD lead is placed.

  • Collapsed lung (pneumothorax)




Accounting for thorough experience and practice, Dr. Aritra Konar is a Consultant Interventional Cardiologist at Apollo Gleneagles Hospital, Kolkata. He has been deemed one of the best cardiologists in Kolkata for his expertise lies in Coronary (femoral & radial routes) angiography, Coronary angioplasty (including primary angioplasty), Peripheral angiography and angioplasty, BMV, BPV, Right heart catheterization and so on, in procedural skills. His guidance is trusted and so are his skills. 



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