Pulmonary Valve Stenosis and Altitude?

There are really two issues here:
1)What is the long-term prognosis/complication rate? and
2)When can your child fly?

To answer the first

First progesterone mc10
First progesterone mc5
First-progesterone vgs 100
First-progesterone vgs 200
First-progesterone vgs 25
First-progesterone vgs 400
First-progesterone vgs 50
First-testosterone
First-testosterone mc

, I'm not sure that I totally agree that it is likely that your child will ever need more procedures on that valve; as an adult cardiologist I have seen patients that go on to have a very leaky pulmonic valve post-repair-- while it is true that it often does not require surgery to fix and may not even happen,I think it is a real possibility.Your baby will very likely follow with a pediatric cardiologist until about 18 years of age and then will move on to see an adult cardiologist.
In the neonate, pulmonic stenosis

Aortic stenosis
Blocked tear duct
Carotid stenosis, x-ray of the left artery
Carotid stenosis, x-ray of the right artery
Hypertrophic cardiomyopathy
Mitral stenosis
Pulmonary valve stenosis
Renal artery stenosis
Pyloric stenosis
Spinal stenosis

the circulation

Circulation of blood through the heart
Circulation of lymph
Diabetic blood circulation in foot
Vertebrobasilar circulatory disorders

is often dependent on a patent ductus arteriosus ( a way to "bypass the lungs" so to speak)- your child probably may have had this occluded after the pulmonic stenosis was repaired if it was significant in size. If not,which is what I suspect, then the no flying issue is very likely due to the fact that at high altitudes there is less oxygen-- if a patent ductus is still there and the oxygen drops it can create higher pressures in the pulmonary artery and decrease blood flow..regarding when to fly and the safety of that--this should be discussed with a pediatric cardiologist as I do not know if there were other defects to be discussed, such as an atrial septal defect, patent foramen ovale, etc. Make sure you discuss this very thoroughly with the pediatric cardiologist before any travel! I hope this was helpful.