Ok got some numbers. My Aortic Valve is at .69 and my Aorta is at 6. Cardiologist said if I wasnt scheduled for surgery next wednesday he would wheel me over to the hospital right now. I like this guy and I like my surgeon. I am completely at peace with my choices now. Asked him how long on average for breathing tube he told me two days. Aaack. My one thing I am not "looking forward too"
I would really ask your doc why. I don't know if there's other stuff going on with you to cause this or if it's a preference of his or what. That used to be the standard years ago, but now most are extubated within a few hours after surgery.
If you do end up with it being in that long, don't worry. You will be kept sedated and probably mostly unaware of your surroundings and what's going on.