based on the research i did ross procedure has a low risk of reoperation. I wonder why I need reoperation after 11 years
Which valve needs replaced? (If you said before if it is the pulmonary or Aortic sorry) Alot can be involved, since you were 9 at the time, it could be something as simple as you outgrew the valve. I know there are quite a few studies on the Ross procedure and children, which studies on Adults may be different than for kids having heart surgeries. I know Dr. Spray at CHOP (children's of philly) has written a few articles about Ross and Children.
Also sometimes things just happen, Justin's dacron conduit should have lasted a very long time, a section of it needed replaced less than 2 years later.