Is dysplastic aortic valve seen very often in Noonan Syndrome and what are the potential symptoms and interventions for this?

Although less common than pulmonary valve dysplasia, it is not unusual to see dysplasia of the other valves, including the aortic valve, in Noonan Syndrome. A dysplastic valve on its own shouldn’t cause any symptoms, but if it becomes narrowed or leaky, it may do, and that may require intervention (keyhole or surgical) if there is significant narrowing or leakiness.