What is an implantable cardioverter defibrillator?
An implantable cardioverter defibrillator (ICD) is a small device that uses electrical pulses or shocks to help control life-threatening, irregular heartbeats that could lead the heart to suddenly stop beating, a sudden cardiac arrest. This overview covers who needs an ICD, how it works, surgery, and risks.
An implantable cardioverter defibrillator (ICD) is a small device that’s placed in your chest or abdomen. This device uses electrical pulses or shocks to help control life-threatening, irregular heartbeats, especially those that could lead the heart to suddenly stop beating (sudden cardiac arrest). If the heart stops beating, blood stops flowing to the brain and other vital organs. This usually causes death if it’s not treated in minutes.