Rising events per hour.

I have been using a ResMed aircurve 10 CPAP machine with an AirFit F20 full face mask for 7 months. My events per hour jumps from 10 to 45 sometimes and then drops down to 6 for a couple nights. What causes the e ends to jump so far from one night to another.

Is your treatment being monitored by a physician? Because it doesn't sound like it's working for you if those are your numbers typically. Treatment is considered successful if your AHI is under 5. I would talk to a doctor and you may need your pressures adjusted. I'm not sure why they would range so much one night to the next other than things like the position you sleep in can be a factor. How much REM sleep you get one night vs. the next? But regardless your treatment isn't working if those are your numbers.

Thank you. My Doctor gets my reports so I will give him a call.

What you need to know is the total apnea index (AI) compared to the central apnea index (Central AI). If you look at the sleep report on your machine these may be displayed right near the bottom of the report for the date range selected near the top of the report. What you need to figure out is if these jumps in AHI are due to obstructive apnea or central apnea. If obstructive apnea then your machine pressures may simply need to be adjusted. If it is caused by central apnea, then the solution is more complex. Some of the other parameters on the machine may need adjustment. Central apnea can be an indicator of other underlying medical conditions, such as heart issues, and you should have that aspect checked. If you are a suitable candidate, it may be necessary to move from an AirCurve 10 to the AirCurve 10 ASV model which provides breathing assistance. All things you should discuss with your sleep doctor and medical doctor.

It's also good to keep an eye on your leaks. The sleepyhead application (you can download this for free online) provides sleep data that is easy to follow and to understand. Excessive leaks can affect your nightly AHI.