An ascending aortic root aneurysm procedure may be done in two ways. Valve-sparing aortic root repair (top right image) replaces the enlarged section of the aorta with an artificial tube (graft). The aortic valve stays in place. In aortic valve and aortic root replacement (bottom right image), the aortic valve and a part of the aorta are removed. A graft replaces the section of the aorta. A mechanical or biological valve replaces the valve.