Just want to say I had Thoracic Aneurysm surgery at Mayo 3 years ago at 78 years old and came thru it with flying colors. You are at one of the very best places for this surgery. My aorta aneurysm took several years to get to the point of a necessary surgery believe it was 5.5 size when it was determined to be a good idea. My surgeon was Dr. Alberto Pochettino, such a wonderful and expert doctor. You will be fine of this I'm sure. Good Luck to you and think positive, it really does help.