title: Synchronizing the beat. A pacemaker that forces out-of-sync ventricles to beat together helps some people with heart failure.
mesh_terms: D002303:Cardiac Output, Low / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D009200:Myocardial Contraction / Q000502:physiology; D010138:Pacemaker, Artificial; D016277:Ventricular Function, Left / Q000502:physiology; D016278:Ventricular Function, Right / Q000502:physiology