Implantable cardioverter defibrillator (ICD)

If your heart is beating too fast or irregularly, your doctor may decide that you need a device that gives your heart an electrical shock to restore your heart to a regular rhythm. This device is called an implantable cardioverter defibrillator (ICD).

Like a pacemaker, an ICD uses leads connected to a pulse generator computer unit in the device. This detects your rhythm problem and sends an electrical signal to correct it. Your ICD generator may have to be replaced in the future, depending on battery strength. Ask your health care team for more information about replacement.

If you have an ICD:

and receive even one electrical shock from your ICD, call your cardiologist or your clinic.
and receive more than one shock or have symptoms after a shock, go to the emergency room.

If you have an ICD, you should have been given a special card that identifies your medical condition. Be sure to carry your ICD or pacemaker identification card at all times.