Advanced pacemaker gets the heart in sync.  Cardiac resynchronization with a biventricular pacemaker helps reduce heart failure symptoms.
D002304:Cardiac Pacing, Artificial / Q000379:methods*; D006329:Heart Conduction System / Q000502:physiology; D006333:Heart Failure / Q000503:physiopathology / Q000628:therapy*; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D009200:Myocardial Contraction / Q000502:physiology