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What Is an Implantable Cardioverter-Defibrillator (ICD)?

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Description

An ICD is a battery-powered device placed under the skin that keeps track of your heart rate. Two thin wires connect the ICD to one or more of the chambers in your heart. The heart sends electric signals to the ICD. The ICD can deliver an electric pulse or shock to help restore a normal heartbeat to your heart if it is beating chaotically and much too fast. Cardiac defibrillation is a way to return an abnormally fast or disorganized heartbeat to normal with an electric shock.

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