I was wondering if anyone has had problems with read outs on their pulse Oximeters. I had a "sleep test" with the oximeter and the next morning, my finger was swollen, red, and blue. I did not get good numbers. When I explained this to the doctor, he ordered another sleep test with a different probe. Yesterday, I had my first class at Pulmonary Rehab, which was wonderful, but they kept having problems with the oximeter on me. (worked fine for everyone else.) The finally used an earlobe probe and it worked better. Anyone else have this problem?