Muscle patches made from stem cells have improved the heart function of monkeys of heart disease. Currently, a small number of people are testing, and the early results from the first recipient suggest that they can treat progressive heart failure.
Heart failure -If the heart cannot send enough blood to meet the demand of the body -usually occurs after a heart attack permanently damages or weakens organs. Since the transplant has not been received or a pump, the treatment cannot completely recover the heart function and only slows down the decrease.
Source: www.newscientist.com