chris,
I've also been told what isfahan is talking about by my cardio, the implication here, I believe, from what I understand is that the valve area cant necessarily expand as fast as the body grows at these points in time, which can lead to a worsening of stenosis of the valve. these are times where they will watch things more closely to make sure this isnt happening, and if it is, to treat it early.
as far as if stenosis can get better as the child grows, it depends, I think on the case, typically I dont think it usually gets better, if anything it stays static. I think that this is a good question to ask the pedi cardiologist though, because this is a very individual outcome. I think at this point its a little early to assume it will get worse. In my case, I've had a BAV with sub aortic stenosis, aortic stenosis, and aortic regurg, and my aortic valve has been pretty stable since my sub aortic resection when I was 4 in 1991 more recently things have started changing, but very mildly. I was told up until a few years ago that I'd probably never need surgery again, in 2007 I was told in the next 5-10 years, maybe longer that I would need surgery to replace my aortic and mitral valves, my new cardio agrees based on my last echo, but I have an appt with him to have a new echo and an appt later this month, so we'll see what he says based on the new echo
hope this helps
