An implantable cardioverter-defibrillator (ICD) is a device that detects a life-threatening, rapid heartbeat, called an arrhythmia. If such a heartbeat occurs, the ICD quickly sends an electrical shock to the heart to change the rhythm back to normal.
Update Date 2/27/2009
Updated by: James Lee, M.D., Department of Surgery, Columbia Presbyterian Medical Center, New York, NY. Review Provided by VeriMed Healthcare Network.