I had a sleep study done but although it was abnormal it was not bad enough to treat. They found my O2 level dropped into the low 80s during REM sleep but I did not stop breathing. It is important to note that I had a very restful night and slept better then normal the night of the study.

I also had a pulmonary function study that was boarderline. They will retest me next year or if my breathing worsens. I have a pulse oximeter I use on nights my breathing feels difficult. I ordered a wedge to elevate my head at night and find it helpful as well. I also have tightness in my throat like someone has their hands around my throat. Taking an extra mestinon in the middle of the night usually helps these symptoms
Sandy