I will second what Rickair7777 said.

I am a very tall, very thin, very athletic female aviator. My resting pulse can be as low as 45, my BP as low as 80/40. I initially showed up as a strong indication for Mitral Valve Prolapse on my very first FP.

My first AME who saw this when I was a young pup (22) with a mere 4 hrs under my belt was kind enough to tell me that tall, thin females often show as a false positive for MVP and other Murmurs. Especially when laying down (as my heart was listened to at that time). He suggested I go to a cardiologist and run the full regime; suggested that I probably didn't have MVP, but was instead a rail thin, healthy female. I did, I passed with flying colors, sent the findings along with my initial app for 1st Class, was issued one with no limits or SODA's. I have been able to pass my 1st class for just over the past 2 decades the very same way. OKC seems to remember my past, and keeps issuing me 1st class'. My pulse/BP remain abnormally low but with with zero side effects.......I can still pull 9 G's in my pals Sukhoi-29 with full color and nothing approximating a grey out.

I guess I am saying be careful. See a Cardiologist first if you have been told you have a Murmur. These folks, unlike your average Family Doc or AME know the characteristics of folks with false positives. Tall, thin, athletic males have nearly the same risk of popping positive for a Murmur. I was blessed with dumb luck on my first AME; just trying to pass along the knowledge.

Keep the Oily side down; unless practicing Acro!

RadialGal