spo2 profile: transition to apnea phase?

[noviceAB]

I recently bought a pulse oximeter

As shown, after ~3 hours of relatively stable reading (AHI=4.6), 
     it entered into an erratic apnea phase (next 2 hours before awakening) with AHI=24; 
     average for the night ~12
This pattern is fairly consistent regardless of how I sleep
Had I slept another hour, it would be erratic

any thoughts/comments?

I have both AFIB & OSA
thanks

[Walla Walla]

You could update your profile with the machine type pressures etc. Also assuming you have a machine that can use sleepyhead you might want to download it and post a chart. The links are below.

[Sleeprider]

It sure would help to know the type of events that you are seeing with an AHI of 24. That needs some attention to find a more effective therapy that might actually help your Afib and poor SpO2. If the events are obstructive, then the solution is different from if the events are central.