Do I have Cheyne Stokes breathing?

[knarf]

https://i.imgur.com/D6t1Xlq.png
https://i.imgur.com/SJBSL2y.png

Some more context..
First sleep study (5 years ago): 3 obstructive, 4 central, 2 mixed, 106 hypopnea in 5:45 hours. AHI 20, RDI 20.1,
N2 sleep 66%, REM sleep 26%, with no N3 sleep, spontaneous arousal index 15.5/hour

CPAP titration (5 years ago): 2 obstructive, 10 central 6 mixed in 5 hours. AHI 6.8, RDI 7
N2 sleep 77%, REM sleep 16%, with no N3 sleep, spontaneous arousal index 13.1/hour

Repeat sleep study (more recent after losing 20lb): 4 obstructive, 6 central 1 mixed in 4 hours. AHI 6.6, RDI 6.6
N2 sleep 77%, REM sleep 16%, with no N3 sleep, spontaneous arousal index 7.5/hour

Repeat CPAP titration (more recent after losing 20lb): 3 obstructive, 36 central , 0 mixed in 5:43 hours. AHI 8.4, RDI 8.4
N2 sleep 70%, REM sleep 9%, with 16.4% N3 sleep, cortical arousal index 4.7/hour

[Pugsy]

No.

[ozij]

No.

Agree.
Repeat CPAP titration (more recent after losing 20lb): 3 obstructive, 36 central , 0 mixed in 5:43 hours. AHI 8.4, RDI 8.4
N2 sleep 70%, REM sleep 9%, with 16.4% N3 sleep, cortical arousal index 4.7/hour

But with the preponderance of central apneas in your titration study, it beats me why you're still on an APAP.

[knarf]

So I ordered a used ASV and tried it for 3 nights. I've noticed that as soon it comes off ramp, the IPAP spikes up.
Screenshots are here:
https://i.ibb.co/ZWm4nFr/ASV-1.png
https://i.ibb.co/HV72LmL/ASV-2.png
https://i.ibb.co/BB44PB3/ASV-3.png
^The first 2 segments of my 3rd screenshot isn't as erratic, and they coincide with me side-sleeping on my right (although I find it uncomfortable)

I understand that ASV's are capable of doing this, but I'm not sure if these charts are typical among people who use ASV.
And if not, is there anything I can do to fix it?

[palerider]

I understand that ASV's are capable of doing this

It's their whole reason for existing.

[Vako]

So I ordered a used ASV and tried it for 3 nights. I've noticed that as soon it comes off ramp, the IPAP spikes up.
Screenshots are here:
https://i.ibb.co/ZWm4nFr/ASV-1.png
https://i.ibb.co/HV72LmL/ASV-2.png
https://i.ibb.co/BB44PB3/ASV-3.png
^The first 2 segments of my 3rd screenshot isn't as erratic, and they coincide with me side-sleeping on my right (although I find it uncomfortable)

I understand that ASV's are capable of doing this, but I'm not sure if these charts are typical among people who use ASV.
And if not, is there anything I can do to fix it?

Your leak rate is out of whack. Should find a better seal. And your VT. is on the higher side. Food for thought