Ross Aortic Valve Replacement Patients

Study Summary

The Ross procedure has become the surgery of choice for aortic valve replacement in children. This consists of taking a child's own pulmonary valve (the autograft) and replacing the child's diseased aortic valve with the autograft. At times, this can involve either enlarging or reducing the diameter of the aortic annulus to make the valve fit properly. The patient's own pulmonary valve is then replaced, most typically with a human heart valve (a homograft). There has been some concern in the literature that as time goes on, the autograft will dilate and the patient will develop progressive aortic insufficiency. Since 1994, we have performed almost 50 Ross procedures in children and young adults. Contrary to many reports from the literature, we have not recognized a problem with autograft enlargement and progressive aortic insufficiency. One thing that we have done differently from other centers is that we have modified the insertion technique of the autograft into the native aortic root. This involves a second buttressing suture layer. Not only does this have the immediate effect of reducing bleeding complications, we postulate that it has the long-term effect of stabilizing the autograft and preventing aortic root dilatation. We hypothesize that this proximal buttressing technique for the Ross procedure has a two-fold benefit. Firstly, it reduces the amount of bleeding in the postoperative period. Secondly, it prevents late autograft root dilatation.