New Improved Metal Hearts

November 8, 2010 12:00:00 AM PST
There's a shortage of donor hearts out there. Right now, more than 3,000 people are waiting for a heart transplant, but only 2,200 will receive one. That leaves hundreds of people out of options and out of time. Now, how heart pumps, once only used to keep patients alive long enough to get a donor heart, are now replacing hearts.