Post Date: 10/26/11 1:40 pm I am pre-op now using an auto-titrating CPAP machine. A doctor I consulted about it recommended using a recording pulse oximeter to measure oxygenation of my blood both WITH and WITHOUT CPAP. Looking forward to going off the CPAP post-op sometime, but just asking my wife to tell me whether I snore is probably insufficient to determine WHEN to go off the therapy. You can use the recording pulse oximetry in your home and get actual measurements, in addition to how you feel and the "bed partner says I snore" report. Seems like a good idea to me. Found some at my CPAP supplier, http://cpap-supply.com, and I am sure there are others, and you can get one from a local respiratory equipment company as well. Thanks! Good question! Be well!