[chrisy]

I've been on various Her2 targeted agents for 5 years. During this time, my LVEF has fluctuated up or down a little bit, usually somewhere in the 60's. Once I had a 78, once it was in the 50's.

I was worried when I got the low reading (until the next test when it bounced back up). Years later when it jumped from 68 to 78, I didn't get all excited because I "knew" it was a bogus reading.

In my opinion, the test is not a precision thing. It is somewhat dependent upon the skill of the technician and how "difficult" the study is (mine is difficult because I have a left implant). You want to be within a normal range, but my experience has been to not get too worried about minor fluctuations either direction. I would be concerned about a downward trend, but one test isn't a trend.

I have found it helps to take CoQ10, and I do take it as well as try to do all the normal things to have a healthy heart.