title: I have pretty bad heart failure and can't do too much anymore. I've heard of cardiac resynchronization therapy. What is it, and will it help my heart failure?
mesh_terms: D002303:Cardiac Output, Low / Q000628:therapy*; D002304:Cardiac Pacing, Artificial / Q000379:methods*; D006801:Humans; D009200:Myocardial Contraction / Q000502:physiology