I try to raise awareness, everywhere I can, and when we have a pregnant patient (or immediately post-partum), I try to take that patient for the type of testing that I do, and remind the doctors (if they forget...we have a large perinatal service and a number of cardiologists, so they're pretty good).
Some of what I see in the literature seems to suggest that all the blood vessel changes reverse completely. But we know that "remodeling" does go on, and some of those changes are permanent. And anecdotally, it does make a difference. I see too many women here reporting problems with hypertension and other issues not to think that it makes a difference.
FWIW, I never had hypertension problems before pregnancy, and didn't really have it during pregnancy, either, other than what I called "flash" hypertension, where it would elevate briefly. It never went really high, either. But I had claudication (arterial spasms) severe lymphedema, and hyperreflexia, and to this day I have claudication in the same spots.
And the question arises: do I have this looked into? I'm 52, on very low-dose estrogen following hysterectomy, and I'm concerned about my cardiac risk factors. So anything I can find out that supports early screening in our population, if nothing else but to convince the insurers to pay for it, can help all those of you with young children and questions about your future.
Now about the teen-age years...can't help you there [}:)]!