In this procedure, the provider incises the skin of the chest over the cardiac device pocket and disconnects and removes a single or dual chamber implantable defibrillator. She removes the electrode lead by transvenous extraction, which means she pulls it out through a vein. Defibrillators sense and regulate the heart rate by delivering a mild electric shock when the patient requires it. Components need to be removed when they no longer function properly or when an infection occurs.
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