Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.
Login or Create an Account
Started using the machine 1 month after nose surgery but got lots of awakenings all night and struggling to get less CAs. I followed some recommendations for machine set-up here but AHI still very high. Your recommendations based on my situation would be very much appreciated!
I am a side sleeper using Airfit P30i (tried Airfit P10 but seems the same). What's your suggestions??
My current set-up:
IPAP: 13
EPAP: 5
Start EPAP: 5
PS: 3.2
Trigger: High
Cycle: Med
Ti Max: 2.2
Ti Min: 0.3
FYI, before the surgery on 3 Aug 2024 (Septoplasty & Bilateral endoscopic inferior turbinoplasty), sometimes I got better AHI like below. The set-up was a bit different
IPAP: 15
EPAP: 5
PS: 2
Trigger, Cycle, Ti Max & Min: default set-up
Machine: Lowenstein Luisa Mask Type: Full face mask Mask Make & Model: Resmed Quattro FX Humidifier: separate F&P humidifier CPAP Pressure: Epap 4-20 PS 4-20; "auto" rate CPAP Software: Not using software
Other Comments: Using 45 degree angle upper body wedge (36"x36") and 4.5"soft cervical collar; 500 assured tidal vol
I agree with G. Szabo. Possibly, because of the increased space in your nasal cavity, etc. after your surgery, you are ventilating much better. That may be the reason for having more CA's. Breathing better means inhaling more O2, but also means exhaling more CO2 than previously (a trigger for causing more CA's).
Advisory Members serve as an "Advisory Committee" to help shape Apnea Board's rules & policies.
Membership in the Advisory Members group does not imply medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.
Thanks a lot Jay51. So you mean my O2 level is higher than before after surgery that's why I will tend to have less spontaneous breath and will trigger more CAs?
My AHI dropped dramatically to 3.53 for 5 h 40m usage on the first day and 2.4 for 6h 49m usage on the second day after changing trigger sensitivity to "very high" and using Airfit P10 mask instead of P30i.
I was thinking to purchase a P40 as I am a side sleeper and I think I will put in on hold.
Machine: Lowenstein Luisa Mask Type: Full face mask Mask Make & Model: Resmed Quattro FX Humidifier: separate F&P humidifier CPAP Pressure: Epap 4-20 PS 4-20; "auto" rate CPAP Software: Not using software
Other Comments: Using 45 degree angle upper body wedge (36"x36") and 4.5"soft cervical collar; 500 assured tidal vol
09-23-2024, 09:18 PM (This post was last modified: 09-23-2024, 09:22 PM by Jay51. Edited 1 time in total.)
RE: How should I set up my AirCurve 10 Vauto
Actually, it is the body getting rid of too much CO2 that triggers central apneas. The amount of co2 in the bloodstream regulates breathing. Less Co2 in the blood tells the brain not to breathe as much.
This is why treatment emergent CA's are so common: the person goes on pap therapy and is breathing much better (and exhaling more CO2 than normal - so increased CA's.)
Most people adapt to this without any problems. A few do not. They need some help either by turning down or off: EPR, flex, or soft pap levels; using a very high trigger on a VAuto, or using a machine with a back up rate (ASV, ST, etc.).
Advisory Members serve as an "Advisory Committee" to help shape Apnea Board's rules & policies.
Membership in the Advisory Members group does not imply medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.
Machine: Remediated Dreamstation APAP-CPAP Mode Mask Type: Full face mask Mask Make & Model: Airfit F20 Humidifier: Built In CPAP Pressure: CPAP 15cmH2O CPAP Software: OSCAR
You're having some leakage issues still in those last two charts which seem to be correlating to your CA events. I would for now set the mode to s mode rather than vauto as I don't see the need for your epap to be raising and lowering back down, but I would keep it at 5cm EPAP and possibly raise your TIMAx to 3.0 to give it a bit more time. We need to get those leaks fixed though, are you using mouth tape or a chin strap to keep your mouth closed?
