Long-term mechanical heart would dispense with the beats

12/5/2013 | CNN

A long-term mechanical replacement for the human heart is bound to fail if its works as hard as the real thing, beating a constant 60-to-100 times a minute, writes Madeleine Stix. That's why Billy Cohn, a heart surgeon at the Texas Heart Institute, and O.H "Bud" Frazier, another heart surgeon, are working on a machine that would deliver a constant flow of blood without the beats, or a pulse.

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