I just got back from the dr. Having found out that my subaortic membrane is back. I had a resection in 2013 and my peak gradient post exercise is 60 mmHG lvot does anyone have experience with subaortic membrane in adults. Mine was discovered at age 47 I am now 51. I am worried about having to reoperate. First they are sending me for a tee which I had last time and it was not a good experience to say the least.