Ventricular assist devices give failing hearts a boost.  Tiny pumps enable patients with severe heart failure to live longer, better lives.
D000367:Age Factors; D004059:Diffusion of Innovation; D006333:Heart Failure / Q000401:mortality / Q000628:therapy*; D006353:Heart-Assist Devices; D006801:Humans; D013997:Time Factors; D014481:United States