What are the chances of my child with pulmonary stenosis, who has had open heart surgery in the past, having more surgery as she gets older?

It’s very variable. It depends on the initial condition and the initial procedure performed. It’s not unusual for individuals who’ve had particularly surgery to the pulmonary valve for that valve in time to become leaky and often that does require further procedure. It’s not universal by any means and it depends on the shape and the look of the valve – the morphology of the valve and the procedure that was performed. It is well established that anyone who’s had an intervention to their pulmonary valve should have lifelong follow up. There are adult congenital heart services around the country which would provide that sort of follow up.