So sorry about your friend. So sad.I also had a hear attack after my transplant a couple of months ago. I am recovering, and very lucky to be here today. No one expected it to happen this way. I was so ready for the transplant to happen. I was not ready to code and be zapped back to life. From what I understand, now, transplant patients are at highest risk of dying from a heart attack. I never new that or heard of that until I experienced my heart attack.I hope it doesn't happen to any of us ever.