You weren't asleep and the irregular breathing is indicative of arousal/awakening. You may or may not remember it.
Looks like you were pretty much sound asleep until about 04:08:30 and you started waking up and by 04:09:30 you were awake and all the rest of that breathing irregularity is related to no being asleep.
Pressure pulses are just something the machine does when it senses some type of apnea and it sends out little puff/pulses of air to help it figure out if the apnea event is central/CA or obstructive. Ignore them.
You can't with this machine. More pressure won't reduce the centrals BUT you aren't having enough centrals to worry about.
Did you know it is normal to have a few central apneas? You need to be seeing an average of 5 centrals per hour ..every hour...every night for them to cause a problem.
Are you wanting to try for 0.0 AHI? It won't happen and it will drive you nuts trying to get there.
It's an unrealistic goal.
You don't understand what a 95% pressure number is....it is NOT the average of the night.
95% numbers just mean you were at OR BELOW that number for 95% of the night. The "or below" part of the definition is often missed or forgotten.
Periodic breathing is just a special breathing pattern and the only time we worry about it is when you see a lot of it AND it's chocked full of central apnea events.
1...your pattern isn't the pattern we worry about and 2...you aren't having PB flagged breathing chocked full of central apneas.
IGNORE it.
You left out some very important information.
How are you sleeping and feeling? Why are you trying to eliminate all events? Is something lacking in how you feel that you wished was different?
Are you waking often during the night?...or sleeping soundly for the most part?
I don't see your body wanting to go to the levels where you would need a bilevel device. You don't even hit 15 much less the 20 cm max.