Many research papers have been published numerous
surgical procedures and their results. But I am not quite sure of the best option for me. If a surgery is needed, should the diseased part of ascending aorta only be replaced with dacron graft while the 23 years old mechanical valve is left in place, or should both the diseased aorta and the mechanical valve, which is working well, be replaced, or any other methods such as wrapping, and so on.