Hi, my husband is 63 and started having heart issues at 47. He had a triple by-pass then and 13 individual stent surgeries, 8 balloons, 1 heart attack, 2 pacer/difibulators (one was replaced) and now his heart function is 27. At one time, he got it up to 44 percent on his function. Can he get it back up to that? What can we expect?