Hi!
A few months ago I had a 2D guided M-mode echo, because of PVCs (about 200 per day). This echo showed a septal thickness of 13 mm, and a very slightly enlarged left atrium. Everything else normal (posterior wall 9 mm, LVIDd 54 mm). Since I've been worried about HCM, I asked the cardiologist about that, but he just said that he sees a septal thickness of 13 mm in almost half of his patients. He said that depended on where on septum one meassures and discarded the question about HCM.
However, since I was worried, I was scheduled for a second echo, which I did today. This echo showed a normal septal thickness of 10 mm, but still a slightly enlarged left atrium. Posterior wall 9,5 mm and LVEDd 57 mm.
1. Could the first meassure have been a false-meassure, or is it true that septum is 13 mm in nearly half of normal people depending on where one meassures? Sounds strange. I know echocardiography isn't highly accurate but could it differ in 3 mm between meassurements?
2. What are my chances of having HCM? Is there something else I can do to have this issue (which is driving me nuts) finally cleared out?
3. I had an exercise test which was "generally normal" with an excericse capacity of 125 % of normal. Does that add any information?
Best regards,
Noxx, 25 y old male