Hello Guest, 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.

or Create an Account


New Posts   Today's Posts

Question about sleep study results
#1
Question 
Question about sleep study results
Hello to all,

New member here and recently (finally) diagnosed with sever sleep apnea.  After looking over the results of both my split and my titration studies it looks as if I possibly have a positional issue where my non-supine AHI is way higher than my supine AHI.  I wanted to see what y'all thought about that and if there is any advice for remaining supine while sleeping?  Also they recommended 14cmH2O as my pressure but not only did they not test anything higher than that, it only resulted in an AHI of 6.3.  Shouldn't I aim to get lower than that with treatment?  I have yet to get an appointment with my DME and thanks to this site I have had my Dr. write a Rx for an Auto CPAP and I know what to ask for when I finally get that appointment.
this is a copy of my split night summary 
   
this is a copy of my titration summary
   

thanks in advance to anyone who looks at this and gives advice.
Post Reply Post Reply



Donate to Apnea Board  
#2
RE: Question about sleep study results
I would ask your doctor that question and state that since 14 didn't bring my ahi to below 5 isn't it logical to assume that I need more pressure? And since titration protocols call for a consideration of BiLevel at 15 and over shouldn't my machine be an auto BiLevel such as the ResMed VAuto? Especially since we do not know how much pressure is actually needed. And that would also allow for future pressure increases should my needs change over the next 5+years.

Or something like that.
Fred Bonjour - Project Manager and Lead Tester for OSCAR - Open Source CPAP Analysis Reporter 
OSCAR

Download OSCAR
New to Apnea? Helpful tips to ensure success
Soft Cervical Collar
Mask Primer
Dealing with a DME
Organize Charts
Attaching Charts

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
Post Reply Post Reply
#3
RE: Question about sleep study results
(09-08-2019, 01:08 AM)bonjour Wrote: I would ask your doctor that question and state that since 14 didn't bring my ahi to below 5 isn't it logical to assume that I need more pressure?  And since titration protocols call for a consideration of BiLevel at 15 and over shouldn't my machine be an auto BiLevel such as the ResMed VAuto? Especially since we do not know how much pressure is actually needed. And that would also allow for future pressure increases should my needs change over the next 5+years.

Or something like that.
Thanks for the advice. I just asked my doctor this via his portal. I’ll see what he says. He has been very good in working with what I ask for. Originally he wrote the Rx for a CPAP at a constant pressure of 14cmH2O I asked him to rewrite it after reading information here. So he rewrote it to and Auto CPAP with 10-18cmH2O. Hopefully he will rewrite it again to the VAuto. Any suggestions on where I should start with settings? I’m not familiar with the setting of a BiLevel machine.
Post Reply Post Reply
#4
RE: Question about sleep study results
The important number in a BiLevel is the EPAP (Exhale pressure) number. That is what splints open the airway, not the IPAP (inhale pressure) which is called pressure on a CPAP. Per your Sleep Study your titrated CPAP pressure is 14. This should also be your EPAP pressure on a BiLevel. By standard practice pressure support (PS) is initially 4, but I'm going to use 3 right now as an example.

So on a BiLevel you would set EPAP =14 and PS=3. PS is always added to EPAP so IPAP =EPAP + PS = 14 + 3 = 17.

To match this therapeutic treatment on a CPAP we would set Pressure =17 and EPR= 3

Auto mode on a VAuto I would do
Min EPAP = 12
PS = 4 (standard)
Max IPAP =20

For a start, expecting to adjust to what you need in your home setting. I mean as necessary and important as sleep studies are they are not exactly set up the same as your home are they. You don't sleep with all those wires and monitoring attached every night do you?
Fred Bonjour - Project Manager and Lead Tester for OSCAR - Open Source CPAP Analysis Reporter 
OSCAR

Download OSCAR
New to Apnea? Helpful tips to ensure success
Soft Cervical Collar
Mask Primer
Dealing with a DME
Organize Charts
Attaching Charts

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
Post Reply Post Reply



Donate to Apnea Board  
#5
RE: Question about sleep study results
(09-08-2019, 08:42 AM)bonjour Wrote: The important number in a BiLevel is the EPAP (Exhale pressure) number.  That is what splints open the airway, not the IPAP (inhale pressure) which is called pressure on a CPAP.  Per your Sleep Study your titrated CPAP pressure is 14.  This should also be your EPAP pressure on a BiLevel.  By standard practice pressure support (PS) is initially 4, but I'm going to use 3 right now as an example.

So on a BiLevel you would set EPAP =14 and PS=3.   PS is always added to EPAP so IPAP =EPAP + PS = 14 + 3 = 17.

To match this therapeutic treatment on a CPAP we would set Pressure =17 and EPR= 3

Auto mode on a VAuto I would do
Min EPAP = 12
PS = 4 (standard)
Max IPAP =20

For a start, expecting to adjust to what you need in your home setting.  I mean as necessary and important as sleep studies are they are not exactly set up the same as your home are they.  You don't sleep with all those wires and monitoring attached every night do you?

I sent your suggested settings to my dr and hopefully he will provide the Rx. He has been amazing at working on this with me so hopefully he will keep that up. And you are right. The sleep study is definitely not the same as sleeping at home even though the best night of sleep I have had in a long time was the night of my titration study lol.
Post Reply Post Reply
#6
RE: Question about sleep study results
(09-08-2019, 08:42 AM)bonjour Wrote: The important number in a BiLevel is the EPAP (Exhale pressure) number.  That is what splints open the airway, not the IPAP (inhale pressure) which is called pressure on a CPAP.  Per your Sleep Study your titrated CPAP pressure is 14.  This should also be your EPAP pressure on a BiLevel.  By standard practice pressure support (PS) is initially 4, but I'm going to use 3 right now as an example.

So on a BiLevel you would set EPAP =14 and PS=3.   PS is always added to EPAP so IPAP =EPAP + PS = 14 + 3 = 17.

To match this therapeutic treatment on a CPAP we would set Pressure =17 and EPR= 3

Auto mode on a VAuto I would do
Min EPAP = 12
PS = 4 (standard)
Max IPAP =20

For a start, expecting to adjust to what you need in your home setting.  I mean as necessary and important as sleep studies are they are not exactly set up the same as your home are they.  You don't sleep with all those wires and monitoring attached every night do you?

That post should be in a sticky or Wiki.
Post Reply Post Reply
#7
RE: Question about sleep study results
(09-09-2019, 10:10 AM)ragtopcircus Wrote:
(09-08-2019, 08:42 AM)bonjour Wrote: The important number in a BiLevel is the EPAP (Exhale pressure) number.  That is what splints open the airway, not the IPAP (inhale pressure) which is called pressure on a CPAP.  Per your Sleep Study your titrated CPAP pressure is 14.  This should also be your EPAP pressure on a BiLevel.  By standard practice pressure support (PS) is initially 4, but I'm going to use 3 right now as an example.

So on a BiLevel you would set EPAP =14 and PS=3.   PS is always added to EPAP so IPAP =EPAP + PS = 14 + 3 = 17.

To match this therapeutic treatment on a CPAP we would set Pressure =17 and EPR= 3

Auto mode on a VAuto I would do
Min EPAP = 12
PS = 4 (standard)
Max IPAP =20

For a start, expecting to adjust to what you need in your home setting.  I mean as necessary and important as sleep studies are they are not exactly set up the same as your home are they.  You don't sleep with all those wires and monitoring attached every night do you?

That post should be in a sticky or Wiki.

Agreed. ???
Post Reply Post Reply



Donate to Apnea Board  


Possibly Related Threads...
Thread Author Replies Views Last Post
Exclaimation [Health] Need help interpreting sleep study results (full report included) JoeyWallaby 16 413 1 hour ago
Last Post: jaswilliams
  My Titration study did not go well. 17WRX 8 206 Yesterday, 04:04 PM
Last Post: Dormeo
  [Pressure] Pressure change results PaulaO2 14 379 10-19-2019, 11:34 AM
Last Post: PaulaO2
  Home Test Results - need assistance interpreting results billonca 9 176 10-16-2019, 04:45 AM
Last Post: billonca
  Sleep study mostly Hypopneas? stevemjc 5 396 10-06-2019, 02:38 PM
Last Post: Sleeprider
  Looking for Advice [Erratic results, many centrals] snoopj123 17 549 09-29-2019, 07:24 PM
Last Post: mesenteria
  Help Needed re Apnea Test Results Dreams of Green 11 334 09-28-2019, 06:36 PM
Last Post: Sleeprider


New Posts   Today's Posts






About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.