Switched to Bipap and AHI increased
Switched to Bipap and AHI increased
I recently switched from CPAP to BIPAP, using an AirCurve 10 S. My pressure settings are 11 and 7, inhale and exhale respectively. My AHI has gone from 6-7 with the CPAP to 12-13 with the BIPAP. Total AI and CI have increased as well. Last night, my AHI went through the roof to almost 25. When I woke up, it felt like the pressure was very low. I put my hand to my mask to be sure the machine was on. I expected the opposite results. Can anyone help me make sense of these results?
Re: Switched to Bipap and AHI increased
What is the breakdown of that AHI in the 3 different event categories?
What are you using in terms of software to see your results? Off the LCD screen or software?
Why did they change you to bilevel (bipap)?
What are you using in terms of software to see your results? Off the LCD screen or software?
Why did they change you to bilevel (bipap)?
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Re: Switched to Bipap and AHI increased
What were your CPAP settings?sleepykiddo wrote:I recently switched from CPAP to BIPAP, using an AirCurve 10 S. My pressure settings are 11 and 7, inhale and exhale respectively. My AHI has gone from 6-7 with the CPAP to 12-13 with the BIPAP. Total AI and CI have increased as well. Last night, my AHI went through the roof to almost 25. When I woke up, it felt like the pressure was very low. I put my hand to my mask to be sure the machine was on. I expected the opposite results. Can anyone help me make sense of these results?
_________________
Machine: DreamStation Auto CPAP Machine |
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Humidifier: DreamStation Heated Humidifier |
Additional Comments: AutoPAP 16-20, Ultimate Chin Strap http://sleepapneasolutionsinc.com/ |
Use data to optimize your xPAP treatment:
how to see your data https://sleep.tnet.com/resources/sleepyhead
how to present your data https://sleep.tnet.com/resources/sleepyhead/shorganize
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how to see your data https://sleep.tnet.com/resources/sleepyhead
how to present your data https://sleep.tnet.com/resources/sleepyhead/shorganize
how to post your data https://sleep.tnet.com/reference/tips/imgur
Re: Switched to Bipap and AHI increased
Last night's results: Total AHI 24.7, Total AI 21.9, and Total CI 16.7. Previous nights had similar breakdowns, although the numbers were about half of last night.
We are reading the clinical sleep report off the LCD each morning.
With CPAP, my pressure needed to be about 14-15 to keep my OSA's down but my CIs increased. Doctor suspected high pressure was making exhaling difficult and machine was mis-reporting it. Switched to BIPAP to better control exhale pressure.
We are reading the clinical sleep report off the LCD each morning.
With CPAP, my pressure needed to be about 14-15 to keep my OSA's down but my CIs increased. Doctor suspected high pressure was making exhaling difficult and machine was mis-reporting it. Switched to BIPAP to better control exhale pressure.
Re: Switched to Bipap and AHI increased
You need 14-15 IPAP but you are only getting 11 with your new machine. That certainly explains why you AHI got worse.sleepykiddo wrote:Last night's results: Total AHI 24.7, Total AI 21.9, and Total CI 16.7. Previous nights had similar breakdowns, although the numbers were about half of last night.
We are reading the clinical sleep report off the LCD each morning.
With CPAP, my pressure needed to be about 14-15 to keep my OSA's down but my CIs increased. Doctor suspected high pressure was making exhaling difficult and machine was mis-reporting it. Switched to BIPAP to better control exhale pressure.
Were you using pressure relief with your CPAP (did the pressure drop down during exhalation and by how much?)
_________________
Machine: DreamStation Auto CPAP Machine |
Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
Humidifier: DreamStation Heated Humidifier |
Additional Comments: AutoPAP 16-20, Ultimate Chin Strap http://sleepapneasolutionsinc.com/ |
Use data to optimize your xPAP treatment:
how to see your data https://sleep.tnet.com/resources/sleepyhead
how to present your data https://sleep.tnet.com/resources/sleepyhead/shorganize
how to post your data https://sleep.tnet.com/reference/tips/imgur
how to see your data https://sleep.tnet.com/resources/sleepyhead
how to present your data https://sleep.tnet.com/resources/sleepyhead/shorganize
how to post your data https://sleep.tnet.com/reference/tips/imgur
Re: Switched to Bipap and AHI increased
Why did you switch?sleepykiddo wrote:I recently switched from CPAP to BIPAP, using an AirCurve 10 S. My pressure settings are 11 and 7, inhale and exhale respectively. My AHI has gone from 6-7 with the CPAP to 12-13 with the BIPAP. Total AI and CI have increased as well. Last night, my AHI went through the roof to almost 25. When I woke up, it felt like the pressure was very low. I put my hand to my mask to be sure the machine was on. I expected the opposite results. Can anyone help me make sense of these results?
_________________
Machine: ResMed AirSense™ 10 AutoSet™ CPAP Machine with HumidAir™ Heated Humidifier |
Mask: Fisher & Paykel Vitera Full Face Mask with Headgear (S, M, or L Cushion) |
Additional Comments: Back up is S9 Autoset...... |
Re: Switched to Bipap and AHI increased
Did you have an in lab sleep study where they attempted to find a suitable pressure for you and if you did do you have a copy of that result and does it show many centrals.
The bulk of your AHI is central and if you didn't have any centrals prior to the addition of the cpap pressure it is possible that the centrals are a result of the pressure.
If that is the case then they may go away with time or you may end up needing a different type of machine again that can specifically deal with centrals and obstructives.
Also sometimes the difference between inhale and exhale (called pressure support on your machine) can also cause centrals to happen.
I know someone who has about 15 to 20 centrals when she uses 4 Pressure Support and none to speak of when she uses 3 Pressure support.
How long have you been on cpap/bipap?
When did you have your sleep studies and do you have a copy of both the diagnostic and titration reports? If not, get them.
You need to figure out if the centrals are new or you had them even before cpap.
These machines are really accurate and I doubt that the machine is misflagging OAs and calling them centrals.
The bulk of your AHI is central and if you didn't have any centrals prior to the addition of the cpap pressure it is possible that the centrals are a result of the pressure.
If that is the case then they may go away with time or you may end up needing a different type of machine again that can specifically deal with centrals and obstructives.
Also sometimes the difference between inhale and exhale (called pressure support on your machine) can also cause centrals to happen.
I know someone who has about 15 to 20 centrals when she uses 4 Pressure Support and none to speak of when she uses 3 Pressure support.
How long have you been on cpap/bipap?
When did you have your sleep studies and do you have a copy of both the diagnostic and titration reports? If not, get them.
You need to figure out if the centrals are new or you had them even before cpap.
These machines are really accurate and I doubt that the machine is misflagging OAs and calling them centrals.
_________________
Machine: AirCurve™ 10 VAuto BiLevel Machine with HumidAir™ Heated Humidifier |
Additional Comments: Mask Bleep Eclipse https://bleepsleep.com/the-eclipse/ |
I may have to RISE but I refuse to SHINE.
If you want to try the Eclipse mask and want a special promo code to get a little off the price...send me a private message.
If you want to try the Eclipse mask and want a special promo code to get a little off the price...send me a private message.