Apr 18 2011 4:20 PM

Implantable Defibrillator

 

 

What Is an Implantable Defibrillator?

An implantable defibrillator (ICD) is a small device that's placed in your chest or abdomen. An implantable defibrillator 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. Implantable defibrillators are typically implanted by cardiologists called,electrophysiologists.

 

Comparison of an Implantable Defibrillator and Pacemaker

The illustration compares a defibrillator (ICD) and a pacemaker. Figure A shows the location and general size of an defibrillator in the upper chest. The wires with electrodes on the ends are inserted into the heart through a vein in the upper chest. Figure B shows the location and general size of a dual chamber pacemaker in the upper chest. The wires with electrodes on the ends are inserted into the heart through a vein in the upper chest.

 

 

Who Needs an Implantable Cardioverter Defibrillator?

An implantable defibrillator is also known as an "ICD" or "Implantable Cardioverter Defibrillator". If you're at risk for certain life-threatening ventricular arrhythmias, such as ventricles that beat too fast or that quiver. For example, you may be considered at high risk for a ventricular arrhythmia if you:

  • Have had a ventricular arrhythmia before
  • Have had a heart attack that has damaged the electrical system in your ventricles

 

An implantable defibrillator is often recommended for people who have survived sudden cardiac arrest Your cardiologist or electrophysiologist may recommend an ICD if he or she sees signs of a ventricular arrhythmias such as ventricular tachycardia or ventricular fibrillation from an: electrocardiogram(EKG), holter monitor,echocardiogram, EP Study, or stress test. Indicators are still being identified for best therapies of various cardiac conditions.

 

 

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