The huge majority of patients thus far have shown healed aortas with drastically reduced incidences of dissection, decrease
in aortic root size, stability
in aortic root size, increased aortic flexibility, etc. (By the way, although losartan is currently being researched in Johns Hopkins clinical trials, other ARBs such as telmisartan are probably most effective given their increased lipid solubility and thus increased tissue penetration.)
I strongly encourage you to visit www.marfanlife.