How's my Oscar looking? Plus SpO2 drops

[Peter1]

I just started using an AirSense 11 a month or two back. Discovered Oscar a month ago. I've been going over the documentation, but wanted to get some additional insights regarding my Oscar results from you guys that have way more experience. 

It looks like I should set my minimum at about 10cm H2O based my 95% pressure of 12.6. My doctor set me at 5-15 and never followed up so I guess it's up to me to figure that part out. 

Weird thing is that my sleep study had an AHI of 6, when I first started the CPAP my readings were in the 1-2 range, and now I'm back up to 6 AHI. 

I also got an Wellue Checkme02 Max to check my pulse ox. I saw that it was dropping into the mid/low 80's on my Garmin and wanted to double check with something a bit more accurate. The Wellue is also showing drops into the mid 80's. Not a lot of time but I'm still curious as to why it's happening. I'm 40 if that makes a difference. 

Any insights on the data below is greatly appreciated. Due to the attachment limit of three files,

[john1977]

i was worried about the same thing last week mine is similar, but was told by people on here it is fine, i also spoke to the company who done my sleep test on monday, and they told me its normal and is only a issue if it stays in low 80s for a long period of time i think he said around 30-45mins without going back in the 90s.

[Crimson Nape]

Hi Peter1! -

The SpO2 drops are called artifacts. They are caused by bumping the sensor or rapid movement. You can disregard these drops. A real SpO2 drop will be of a longer duration.

Your AHI increase seems to be caused by the CAs. This is a common occurrence and can be considered treatment emergent events. They are caused by CO2 washout caused by the EPAP/IPAP pressure difference. If they are of low duration (< 20 sec), you can either ignore them or you can try reducing your EPR value.

- Red

[gainerfull]

Looks like you could use more minimum pressure considering how many obstructive events you're seeing throughout the night. I'd recommend starting tonight at 7cmH20 so you can start getting EPR full time. Then, keep an eye on obstructive events over the next couple of nights and add 1cmH20 until the light blue events are rare. It does look like in the second screenshot you may be experiencing some positional apnea as well so look for opportunities to improve your sleep positioning. Lots of people have pillows that are too big and sleep on their back which block their airway when they fall asleep and no amount of pressure is going to fix that.

Crimson makes a good point about artifacts but your ring should also measure movement as well so I wouldn't be so quick to discount the desaturations.