Ok, I know this sounds stupid but..... I had and Echo today because I've been having heart palpitations. The tech did the test and I have to schedule a seperate appt w/ the dr. to get the results. After the tech left the room I peeked at the computer moniter on the echo machine. It had all kinds of measurements on it and toward the bottom, something said 41.6%. I had been reading about echos and how they measure your EF. Could this number that I saw on the bottom that said 41.6% be my EF, or is it likely something else? I'm probably psyching myself out for nothing, but it's been driving me nuts ever since I left.