How long do biventricular pacemakers last?
Pacemakers usually last four to eight years. Biventricular pacemakers that are combined with an implantable cardioverter defibrillator (ICD) do not tend to last as long -- about two to four years. The lifespan of the pacemaker depends on how much your heart is depending on it.
From: Heart Failure and Biventricular Pacemakers WebMD Medical Reference
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