The CONTAK RENEWAL® TR cardiac resynchronization therapy pacemaker (CRT-P), Models H120 and H125, is designed to provide cardiac resynchronization therapy (CRT). Cardiac resynchronization therapy is for the treatment of heart failure (HF) and uses biventricular electrical stimulation to synchronize ventricular contractions.
A cardiac resynchronization therapy pacemaker (CRT-P) is a special pacemaker for people with heart failure. Like any pacemaker, a CRT-P treats heart rhythms that are too slow. In addition, a CRT-P treats heart failure by helping your ventricles (lower heart chambers) pump together — in "synchrony." A CRT-P is sometimes called a "biventricular pacemaker."