Subcutaneous implantable cardioverter-defibrillator (S-ICD)

A subcutaneous implantable cardioverter-defibrillator (S-ICD) is a less invasive alternative to a traditional ICD. A doctor places the S-ICD device under the skin at the side of the chest below the armpit. The device connects to a sensor, called an electrode, which runs along the breastbone.