Oh, Lab-Scientist-Lady, after consulting Wiki (ha), it looks like a vetricular ejection fraction between 55 and 70 is normal. Mine was 63. And we want to watch our aortic root size! My kids and I look soooo Marfanoid, AND we had some signs of Loeys-Dietz syndrome, so until genetic data was acquired, we had to closely watch our aortic root size. Did you see my video on this? I double checked my doctors’ readings for my son (yikes). We are in the clear with Marfans and Loeys-Dietz, but watch my son’s aortic root closely because he was off the nomogram! 😉