My 83 year old mom just had it 2 months ago. Her strength had been going downhill for 6 months, needed a walker to get around. It took twice as long as the doctor estimated. They went up both femoral arteries – one for the optic fiber/laser, one for the electrical probes. The incision sites sealed up fine afterwards. A good portion of her strength came back after a week. (Did not need a walker after a week.) She is getting stronger every day. => you don’t need all of your heart muscles, only the good ones.