Hello, This post is nearly a year old and I am wondering how you are doing? Please update how you are doing.

I have been having similar O2 saturation problems for over a year now. My O2 fluctuates from 99 to low 80's as well for no reason (had an overnight test which confirmed what I told the doctor about my O2 levels). I have had my lungs tested by a pulmonologist and they were "normal for my age" (69). I did have a few spots show up on a CT SCAN 3 years ago but a follow up CT SCAN showed they are not growing so pulmonologist is not concerned. I DO have moderate mitral valve prolapse and mild aortic valve prolapse, possibly caused by COVID 18 months ago (did not have problems that I know of before COVID, but I was not measuring my O2 levels before this time so who knows?). I do have a Cardiologist at Cedar's Sinai and have had a full battery of tests on my heart (TEE, ECHOS, Stress ECHO, Cardiac MRI, PET SCAN etc. My O2 drops happen during all events, even when just sitting still quietly. Most of the time my O2 is 94 or 95. Started having heart palpations about a month ago and wore a monitor for two weeks. Am waiting for results. Palpations are frequent... several times each hour. I do not feel faint or have any other physical symptoms. I just always feel like something heavy is sitting on my chest though. My blood pressure is anywhere from 100/60 to 120/80 when I am at the doctors office. No one seems to have a clue why my O2 fluctuates so much.

Take Care,

Sharon