Oh my goodness! I would be getting a second and third opinion as soon as possible. Number one that cardiac surgeon would have been fired! At least from my patient care. Mine had to go into an emergency surgery while I was there, which was totally understandable, I was not as high risk as you. And the PA had spent 45 minutes with me. I felt very confident that this was an emergency situation and I would be considering getting a new primary care physician as well. This is a serious condition. They should be calling you back they should be giving you guidance not walking out of the room!