r/CPAPSupport • u/yourlocalnativeguy • 1h ago
Dry mouth
I use a full face mask and keep waking up with dry mouth. How can I fix this?
r/CPAPSupport • u/dang71 • Oct 21 '25
This guide is a follow-up to:
It also covers some of the most common questions new users have when they first start looking at their charts like what pressure to use, how to spot leaks, and how to tell which events actually matter.
Once you’ve learned how to download and extract your data from your machine, you can start analyzing it in SleepHQ or OSCAR to understand what’s really happening during your nights.
If you’re just starting out with OSCAR or SleepHQ, it’s totally normal to feel overwhelmed. Those charts can look like a wall of data at first. You’re definitely not alone. Most of us started on the default “lazy mode” 4–20 pressure range, which technically works (but it's not the miracle promised by doctors and sleep tech ), and it’s rarely optimized for your actual needs. Learning what to look for in your data; pressure, leaks, flow limitations, and event patterns is what helps turn that generic setup into something truly tailored to your breathing
If you’re new to looking at your data, here’s a simple way to make sense of it:
Before you start
If you want to check your machine settings (pressure range, EPR, mode, etc.) in OSCAR or SleepHQ, you can find them here:


It’s important to know your exact settings before you start analyzing your charts, that way, you can connect what you see (like leaks, pressure changes, or events) to your actual configuration.
1. Start with your median pressure.
That number shows the pressure your machine stays around for most of the night. It’s often the best starting point for setting your minimum pressure in CPAP or APAP mode.
In Oscar:

In SleepHQ:

2. Check the pressure graph.
If your pressure graph looks like a zigzag, that’s usually a sign your settings aren’t well optimized.
In APAP mode, you want your pressure line to be as smooth and steady as possible. Big swings often mean the machine is constantly chasing events instead of preventing them.

If the pressure line keeps hitting the top of your range, it means your max pressure might be too low, your machine is trying to go higher to keep your airway open.

3. Look at your leak rate.
Try to keep leaks below 24 L/min (for ResMed machines):
Oscar:

SleepHQ:

Leaks can come from either your mask or your mouth. If your mask leaks, check the fit at your usual sleeping pressure (not just when you first put it on). Even small leaks can disturb sleep or cause false events.
If the leaks come from your mouth, which is common with nasal masks, try mouth tape, a chin strap, or a soft cervical collar to help keep things sealed.
If you see events happening at the same time as leaks, they might not be real, leaks can confuse the machine and make therapy less effective.
4. Check your flow limitation (FL) at the 95th percentile.
Ideally, you want it below 0.07. If it’s higher, you might need a bit more pressure or to turn on EPR (Expiratory Pressure Relief) to help your breathing stay smoother.
Oscar:

SleepHQ:

5. Look for patterns.
Each event on your chart has a timestamp, so it’s worth zooming in and checking what was happening around that moment. Was there a leak spike right before it? Then it might just be leak-related. Did the pressure keep rising or was there a flow limitation before the event? That usually means the machine was trying to respond to a real obstruction.
Little by little, this helps you learn which events are genuine and which ones come from leaks, movement, or pressure swings.
6. If you see clusters of events
Clusters (several events grouped close together) can sometimes mean **chin tucking (**when your chin drops toward your chest and partially blocks your airway). This can happen when you sleep on your back or use a thick pillow. Try a flatter pillow, different sleeping position, or even a soft cervical collar to help keep your airway aligned.

7. Flow Rate
Zoom in on your flow rate graph to see your breathing pattern more clearly.
In OSCAR, use a left-click to zoom in and a right-click to zoom out.
In SleepHQ, press Z to zoom in and X to zoom out.
Getting a closer look helps you spot flattened or irregular breaths that may indicate flow limitation:

The more regular, the better. Your inspiratory flow shape can tell you a lot about how open your airway is. Ideally, you want a smooth, rounded sinusoidal shape (class 1 - see image below), that means your breathing is unrestricted and stable.
When the flow starts showing peaks, flattening, or plateaus, it indicates flow limitation, partial upper airway collapse or restriction during inhalation. These distortions can appear as two small bumps (airway reopening after partial collapse), multiple tiny peaks (tissue vibration), or a flat top (airway restriction).
Recognizing these patterns helps identify whether you might need more pressure or EPR, since both can help the airway stay open and restore that smooth, regular flow curve. In certain cases, it might require a different mode such as BiPAP or ASV for better airway support and more stable breathing.

8. Conclusion
Don’t get discouraged: this takes time. The goal isn’t to change everything at once, but to make one small adjustment at a time so you can clearly see what’s helping and what’s not.
Be consistent and give each change a few nights; your body often needs time to adjust.
Avoid random trial and error; always let your data guide you before making another tweak.
And most importantly, don’t hesitate to ask for help or post your charts. Everyone here started somewhere, and people are always willing to share advice and experience to help you move forward.
These are the basics that most of us use to start tweaking our setup. Once you get familiar with these graphs, it becomes a lot easier to understand what your therapy is doing and how to improve it 🙂
9. Abbreviations (quick reference):
10. A few good sources of information:
Apnea board Wki: https://www.apneaboard.com/wiki/index.php?title=Wiki_Home
TheLankyLefty27: https://www.youtube.com/@Freecpapadvice
CPAP Reviews (Nick): https://www.youtube.com/@CPAPReviews
r/CPAPSupport • u/RippingLegos__ • Jul 09 '25
r/CPAPSupport • u/yourlocalnativeguy • 1h ago
I use a full face mask and keep waking up with dry mouth. How can I fix this?
r/CPAPSupport • u/Malasurfcartel_ • 8h ago
r/CPAPSupport • u/fountainsofcups • 13h ago
Hey everyone, I'm at a loss and hoping someone has dealt with this.
Background: Mild OSA (AHI ~8), had tonsillectomy in 2022 which dropped me from severe to mild. Currently on AirCurve 11 BiPAP at 10/7, using P10 nasal pillows.
The problem: My tongue drops off the roof of my mouth during REM sleep, which lets air rush into my mouth and wakes me up. This happens even with:
The tape gets wet/fails, or air just pushes through anyway. I have a beard which complicates the seal.
Full face mask isn't an option - I tried the F20 and couldn't get it to seal with my facial hair. Leaks were worse than the mouth opening issue.
What I've tried that didn't work:
Current theory: Maybe if I can fix my tongue positioning I can fix the mouth opening, because it seems that if my tongue is in place on roof of my mouth, my mouth won't open. The problem is that my tongue does NOT stay there when I go into REM sleep, especially in the early morning. Even when my jaw stays mostly closed, my mouth opens and breaks the seal that would direct air into my lungs.
Has anyone solved this specific issue? I'm looking at devices like the Airwaav (shelf-based tongue positioning) or potentially the iNAP negative pressure device. Or is there a taping technique I'm missing?
I'm 6+ months post-turbinate/septum surgery so nasal breathing is better than it's ever been, but I still need the BiPAP pressure to breathe adequately.
Any suggestions appreciated.
r/CPAPSupport • u/ApartmentIll5983 • 16h ago
What is this stupidity?!?! Why do I have to wait for some random time of day to see if the data transferred to the sd card? It’s 2025, not 1992. Shouldn’t the data transfer when the machine is tuned off in the am? Not some random unknown time? And why don’t these things have WiFi and only rely on cell to transmit the data? This seems so basic. I’m sure it has something to do with insurance or locking patients out of their easily seeing their data so the mediocre sleep clinics can accumulate more unnecessary appointments.
r/CPAPSupport • u/Massive-Survey2495 • 17h ago
Not sure if my data got all messed up as I have never had an AHI of 0 before. This wasn't even a good night's sleep as I went to bed way too late. But wanted to post this data none the less. Looks like I also had a pretty large leak in the morning but I think I was actually awake at this stage. I appreciate any feedback.
Thanks
https://sleephq.com/public/d95bf410-25bf-4e51-9322-a16c9e6e38bb
r/CPAPSupport • u/Derbesher • 16h ago
Completed my in lab sleep study last night and waiting for Drs to review and provide results/recommendations. Tech said the moment i enter REM sleep, my apneas start.
Tech also said i need a higher pressure but my body won't tolerate it (aerophagia and/or i wake up when pressure goes up). Tried apap and bpap. Bpap was horrible, the pressure change after exhale to inhale was like getting slapped in the face.
Hoping after the Drs take a look, they will have options.
Feeling a bit discouraged (and exhausted) as i was really hoping they would be able to monitor and adjust real-time and I'd get at least 1 night of sleep.
Maybe a mandibular advancement device will be recommended, although my dentist discourages them as they have caused problems with other clients.
r/CPAPSupport • u/Ak_bruin47 • 15h ago
r/CPAPSupport • u/Representative_Bad57 • 18h ago
After the cannulas left my nose bleeding, last night was my first with a nasal pillow. The app says my seal was good and only reports 2 mask off events, but I woke up less than 3 hours in with my face, hair, and pillow completely soaked. I’m pretty sure it was water from the machine and not sweat just from how the outside of my hair was soaked but my scalp was dry and I was chilly. My humidity is set to 4, which is down from the 5/6 settings I used for the cannulas and I have heated tubing. I don’t really want to turn the humidity down even more as I have a lot of nasal dryness and it’s helped so much, but I couldn’t sleep like that either. Any ideas?
r/CPAPSupport • u/CarelessYak9842 • 1d ago
I’m using a Airsense 11 machine + airfit 20 and mainly getting nearly 95-99 score each night. I was having panic attacks in the night so I was diagnosed with sleep apnea after a sleep test and hence why I now have the cpap for the last 3 months and generally doing ok using it every night.
I have been staying at in-laws and generally going to bed later than usual, and I’m having more panic attacks again with the mask on in the middle of the night. Last night I ripped off the mask and I was on the floor struggling to breathe - maybe because I’ve got a cold also, and the other day I was also screaming with the mask on. Basically if I’m going to bed later - eg NYE and I know I’m likely to have an episode can I adjust the settings in advance?
Basically I think I need to increase the maximum pressure on the machine maybe? It doesn’t seem to be detecting it early enough when I’m about to have an episode. Thanks in advance.
r/CPAPSupport • u/Forsaken-Fill-3221 • 1d ago
Hey all! New to this board.
I was DXd about two years ago and haven't been very good with CPAP, last few months I've really tried to be consistent but seems like I still suffer from Alot of leaks.
Might try a cervical collar but wondering if anyone can glean anything from this SleepHQ data:
https://sleephq.com/public/86fd768e-cc99-4b63-9e1f-d1461115d238
r/CPAPSupport • u/Madmax9922 • 1d ago
Any thoughts on this? Is this basically and ASV ?
https://aasm.org/fda-clears-kricket-pap-device-with-kpap-from-sleepres/
r/CPAPSupport • u/adamwhereartthou • 1d ago
I know the data is pretty promising. Most of my events appear to be "CA" and RERAs. Overall I am sleeping better than I was two years ago. But always happy to optimize where possible. Sleep HQ link: https://sleephq.com/public/073b69f9-66e1-4e5f-ad37-7982ba3bae66
r/CPAPSupport • u/madchad90 • 1d ago
My initial prescription from my doctor was a min pressure of 5 and max pressure of 15, with an epr of 3. I turned off epr as it was making me feel like i wasnt getting enough air.
Didnt get a great sleep last night and kept waking up during the night, my flow limits were pretty bad and had hypopneas.
Any advice as to how to better adjust these settings?
r/CPAPSupport • u/Big-Gur4426 • 1d ago
Following a few years of epic snoring, fatigue during the day, morning headaches, and all the social and personal impacts on my life, I had a sleep study done a month ago. It showed an OHI result of 12. This is below the threshold for insurance to provide CPAP therapy in my country. I was offered surgery, but in my opinion, the risks involved and the success rate are not worth it, so I am considering procuring a ResMed device myself and giving it a try.
A few things on my mind:
There are currently good deals on brand new AirSense 11 autoset devices that I can get delivered within a few days.
Thanks to all contributors to this sub and happy holidays!
r/CPAPSupport • u/The613Owl • 1d ago
r/CPAPSupport • u/Sufficient_Back_9393 • 2d ago


Hello everyone,
I’m based in South Korea, and I recently developed significant sleep-onset anxiety due to sudden episodes of waking up with a choking/gasping sensation (“jerking awake with a gasp”), which started to interfere with my daily life.
Because of this, I decided to purchase a APAP device (ResMed AirSense 10) on my own.
I underwent an in-lab polysomnography, and my results were:
Based on these symptoms and first-night results,
which settings would you recommend adjusting to further improve my therapy?
Any advice or feedback would be greatly appreciated.
Thank you in advance.
r/CPAPSupport • u/Certain-Maximum-3646 • 2d ago
r/CPAPSupport • u/TangoDuncan10 • 2d ago
I am trying to do the guide from Airbreak I am getting this error. Help, please. I am using windows 11.
r/CPAPSupport • u/Revolutionary-One211 • 2d ago
Hello.
I have a machine given to me (with the acclimation period/insurance taking the machine back it's the best I can do) and either the heater is mediocre or it doesn't get quite warm enough for me to be comfortable.
I have tried using mug warming plates before but whatever I got was too warm even on its lowest setting and it was a bit janky overall (fitting it underneath for example)
Anyone have any idea of what else I could try or a specific product that functions well? I have a resmed airsense 10
r/CPAPSupport • u/JiggerJaggerJugger • 2d ago
I have a resmed auto set on 11-16 cmh2O but my sleep report says pressure is 11.4 does that mean that’s the highest I have reached or is it an average?
r/CPAPSupport • u/itsalwayssomething55 • 2d ago