Injecting beads of gel into the wall of a still-beating heart has the potential to improve the health of patients with severe heart failure, according to a new study. Heart patients who received the gel implant had improved blood oxygen levels and were able to walk hundreds of feet farther during a six-minute walk test, said senior researcher Dr. Douglas Mann. He is chief of the cardiovascular division at Washington University School of Medicine and a cardiologist-in-chief at Barnes Jewish Hospital in St. Louis.
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