ICDs can last anywhere from 2 years to 8 years or more, but on the average about five years. Device longevity depends on many factors and how hard the battery inside the ICD has to work.

Overall battery life is affected by type and amount of therapy received (i.e., pacing, number of defibrillatory shocks or antitachycardia pacing); voltage needed to stimulate the heart to pace and/or convert an abnormal heart rhythm.  

Last updated on February 8, 2010 by Arrhythmia Management