Cardiac resynchronization therapy (biventricular pacemaker)

A biventricular pacemaker is an artificial pacemaker or implantable cardioverter-defibrillator designed to treat congestive heart failure. In many heart failure patients, the walls of the left ventricle — the heart’s main pumping chamber — are no longer synchronized, or pumping together as they normally would. A biventricular pacemaker is designed to resynchronize the pumping action of the left ventricle.