@gingerw I think that was my problem with just the pulse oximetry on my finger. I couldn't get comfortable with the wires and the little transmitter recorder box. I can't sleep on my back either! I watched my finger with the clip on it for hours, I may have slept for 2 hours that night in Rochester. When I had my consultation regarding the outcome of the test, I balked at the results, as I was awake most of the time. If i'm was going to continue with the possiblility of sleep apnea, I wanted to redo that test for reasonable results.