A permanent pacemaker is a small device implanted in the chest to send electrical impulses to start or regulate a slow heartbeat. This device is usually implanted in the chest area just under the collarbone. A pacemaker may be used if the heart’s normal electrical conduction system is not working properly, or if the conduction system is blocked.
An implantable cardioverter defibrillator (ICD) looks similar to a pacemaker, though slightly larger. It works very much like a pacemaker, sending out a low-energy shock impulse that resets an abnormal heartbeat back to normal. It is also able to send out a high-energy shock impulse if the heart develops a severe arrhythmia.
Biventricular (BIV) therapy
Another specialized pacemaker--a biventricular pacemaker--is used to help resynchronize the ventricles. A third lead is placed on the surface of the left ventricle which enables the heart to contract more effectively. This type of treatment is called resynchronized therapy (CRT).
Over time, it may be necessary to remove pacemaker and defibrillation leads due to scarring that occurs around the leads. LG Health experts trained in transvenous lead extraction perform this minimally invasive procedure.