Spain uses stem cell therapy to treat damaged hearts

A Spanish hospital has successfully used stem cells culled from healthy donors to treat seven heart attack victims, in what officials said was a world first.

Madrid's Gregorio Maranon hospital plans to treat 55 patients in all with the technique in a clinical trial, the regional Madrid government which runs the hospital said in a statement.
"Seven patients have already been operated on and they have progressed very well despite having suffered serious damage to their heart tissue," it added.