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Cardiac arrhythmia
- ... 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.
- Images ... An implantable cardioverter-defibrillator (ICD) is a device that detects a life-threatening, rapid heartbeat, called an arrhythmia. ...