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



[Diagnosis] Sleeping positions and AHI?
#1
I am using a Swift FX nasal mask and a Resmed Autoset S9 with humidifier and climate control tube.

Have been using this setup for several years. I thought that sleeping on my back would be more comfortable than my usual sleeping on my left side and might be better in not dislodging my mask.

So I began doing this. In checking my AHI, I find that in sleeping on my side, I am averaging AHI in no more that 1. Sometimes as low as .3 when side sleeping.

But on my back, I am averaging 7 to 9 AHI, but I sleep much better in that sleeping position. No dry mouth, so I don't think I am mouth breathing. I have the Rescan software, but don't really know how to use it well. I can post data from it if it will help.

In either sleeping position, I am NOT getting the red frowning face (on the S9) that indicates poor mask fit.

Also when I am laying on my side, I can feel that pressure generated by the CPAP is quite a bit less than laying on my back.

Any ideas?

Is 7-9 AHI acceptable? I had heard that over 5 was not so good,
Reply
#2
(06-23-2014, 06:36 AM)Caddyshack Wrote: Is 7-9 AHI acceptable? I had heard that over 5 was not so good,

There's no "cliff" you step off of at AHI=5. You just need to draw a line somewhere for insurance and diagnostic purposes.

Also AHI counts all apneas the same, whether it's 11 seconds long or 120 seconds long. Learn to look at your airflow waveforms and figure out how long your apneas are.



Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
Reply
#3
Hello Caddyshack and welcome to the forum
Your machine set at 'CPAP Pressure: 4-16'
Whats pressure and leaks ... median, 95th percentile, maximum

I feel better with minimum pressure closer to 95th percentile pressure

Whats the makeup of AHI (obstructive, hypopnea, central apnea)
The machine score apnea events whether you,re asleep or awake
Those awake events while sleeping on your back are meaningless and ought be discarded for true AHI
Reply


#4
Am DL the Sleephead software. Thanks for the reply Archangel.

Looking for a solution where I can sleep on my back. Have developed slight arthritis in left shoulder that makes this position more difficult.

Zonk, don't quite understand what you are saying. Is there a log I can post from the ResMed or Sleepyhead that could help you/me better understand the situation and get some better answers?
Reply
#5
(06-23-2014, 06:36 AM)Caddyshack Wrote: I am using a Swift FX nasal mask and a Resmed Autoset S9 with humidifier and climate control tube.

Have been using this setup for several years. I thought that sleeping on my back would be more comfortable than my usual sleeping on my left side and might be better in not dislodging my mask.

So I began doing this. In checking my AHI, I find that in sleeping on my side, I am averaging AHI in no more that 1. Sometimes as low as .3 when side sleeping.

But on my back, I am averaging 7 to 9 AHI, but I sleep much better in that sleeping position. No dry mouth, so I don't think I am mouth breathing. I have the Rescan software, but don't really know how to use it well. I can post data from it if it will help.

In either sleeping position, I am NOT getting the red frowning face (on the S9) that indicates poor mask fit.

Also when I am laying on my side, I can feel that pressure generated by the CPAP is quite a bit less than laying on my back.

Any ideas?

Is 7-9 AHI acceptable? I had heard that over 5 was not so good,

G'day Caddyshack, welcome to the forum., Welcome

5 is usually regarded as the borderline, but as Archangel said there's no "cliff" - it's all a matter of degrees. However, low AHI is better and under 5 is a good target.

I suspect what's happening is this: The obstructive apnea is caused by the tongue and soft palate falling back and closing off your airway. This is much more likely to occur when sleeping on your back. When you sleep on your side, these soft tissues are likely to move away from the back of your mouth, and not block the airway. That's why you get a much lower AHI when sleeping on your side. If you prefer sleeping on your back, it may be necessary to increase your pressure to overcome the mechanical obstruction which occurs in that position.
DeepBreathing
Apnea Board Moderator
www.ApneaBoard.com


Bed

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.
Reply
#6
Welcome to the forum! You are right sleeping on our backs does cause more apneas. Since you want to sleep on you back (and I don't blame you there) take
a look at your pressure graph in rescan. You may be able to increase your high
pressure to capture those events. I would suggest you post your pressure and
ahi graph. There are alot of people here that can advise you.

When and if you do make any changes, treat it like a scientific experiment. Make
one change at a time, make small incremental changes, and make changes slowly. I learned this the hard way! I wanted to fix it fast!,,,







2010 sleep study 63 AHI, 2014 3.0
Reply


#7
Hi Caddyshack,
WELCOME! to the forum.!
Hang in there for more responses to your post and best of luck to you.
trish6hundred
Reply
#8
I have imported data into SLeepyhead. I see a place to export, but seems to be doing so in a CSV file format. Will this work for you, or is there a better format? Also should I export for last six months or what?

Bill

PS, I noticed that my max pressure is at about 12 and before I had it set at 17. Don't know why I changed it, but seems like it should be back at 17. Los pressure is about 5.
Reply
#9
If you are going to adjust your own auto cpap pressures, I would recommend increasing the starting pressure to what you can comfortably tolerate.

4 is too low IMO. You may be having apneas/hypopneas when you are first getting to sleep and the auto starts to kick up the pressure to deal with them. But if you start at a higher starting pressure you may be able to cut down on the amount of them when you are first getting into deep sleep.

So, when I am asked to recommend auto pressures on a patient:

Low = what they can comfortably tolerate
High = a little bit above their 95% pressure

So while a patient might start with a range of let's say 4 to 16 (I would never recommend personally starting a patient as low as 4 unless they absolutely couldn't tolerate more), as you get more and more used to the pressure I would keep increasing the low pressure as tolerated. I usually put the high pressure 1 or so above the 95% pressure.

Let's say your 95% pressure is 12. If you tolerate 12 with no difficulties, I would set your starting pressure at 12. As time passes, you may need to tweak your settings occasionally (especially with weight gain or loss).
Reply


#10
(06-23-2014, 09:14 AM)jaycee Wrote: If you are going to adjust your own auto cpap pressures, I would recommend increasing the starting pressure to what you can comfortably tolerate.

4 is too low IMO. You may be having apneas/hypopneas when you are first getting to sleep and the auto starts to kick up the pressure to deal with them. But if you start at a higher starting pressure you may be able to cut down on the amount of them when you are first getting into deep sleep.

So, when I am asked to recommend auto pressures on a patient:

Low = what they can comfortably tolerate
High = a little bit above their 95% pressure

So while a patient might start with a range of let's say 4 to 16 (I would never recommend personally starting a patient as low as 4 unless they absolutely couldn't tolerate more), as you get more and more used to the pressure I would keep increasing the low pressure as tolerated. I usually put the high pressure 1 or so above the 95% pressure.

Let's say your 95% pressure is 12. If you tolerate 12 with no difficulties, I would set your starting pressure at 12. As time passes, you may need to tweak your settings occasionally (especially with weight gain or loss).


I'll try this and get back to you. A little fuzzy on the high end pressure. If for example, I am at 12 starting pressure (Low) am I looking at 13 as the High pressure? I think that I am missing something here. Dont-know

There are a few other settings I may have changed, or need to be changed. I recognize the intelligence of changing one thing at a time and plan to start with pressure.

But, is there a way to bring the S9 back to factory defaults?
Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  Using humidified CPAP for other than sleeping...? S.L. Ping Beauty 11 444 01-10-2017, 11:15 PM
Last Post: Galactus
  Video camera to record sleeping RichardVT 7 353 12-17-2016, 05:11 PM
Last Post: RichardVT
  [Diagnosis] Could Sleeping Pill During Test Cause False Apnea Diagnosis Violetskyye 20 1,253 09-23-2016, 03:22 PM
Last Post: Sleeprider
Gross [Equipment] CPAP Quit while Sleeping kwhenrykerr 3 423 08-20-2016, 05:00 PM
Last Post: kwhenrykerr
  AHI, leaks, sleeping on your side or back jxyzobrien 2 578 08-18-2016, 05:20 PM
Last Post: PaulaO2
  sleep study: sleeping position storywizard 8 669 08-17-2016, 11:34 PM
Last Post: Ockrocket
  MYAIR: PENALIZED FOR PEEING, SLEEPING LATE, OR FILLING THE WATER CHAMBER srlevine1 24 2,951 08-13-2016, 05:01 PM
Last Post: Homerec130

Forum Jump:




About Apnea Board

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

For any more information, please use our contact form.