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ahi levels
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rjew123 Offline

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Posts: 1
Joined: Sep 2013

Machine: fisher & paykel
Mask Type: Full face mask
Mask Make & Model: premo
Humidifier: none
CPAP Pressure: 14
CPAP Software: Other Software

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Sex: Male
Location:

Post: #1
Smile ahi levels
Hi i am new i have a f&p premo i had a ahi reading of 10 last night but the first 2 nights were around 5. anyone know why would this happen?
09-30-2013 02:06 AM
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eviltim Offline

Advisory Members

Posts: 408
Joined: Aug 2013

Machine: Resmed S9 VPAP
Mask Type: Full face mask
Mask Make & Model: Resmed AirFit F10
Humidifier: H5i heated humidifer
CPAP Pressure: 5 exhale/9 inhale
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location:

Post: #2
RE: ahi levels
It's pretty common for AHI to fluctuate a bit. You may have had more leaks, or just slept differently. People new to CPAP usually have a fair amount of central airway events which contribute to AHI but generally go away after time as well. Definitely keep an eye on it, if it's consistently >5 you'll need to take corrective action.
09-30-2013 02:37 AM
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me50 Offline

Advisory Members

Posts: 2,559
Joined: Aug 2013

Machine: resmed S9 VPAP Auto
Mask Type: Nasal mask
Mask Make & Model: Wisp and Silicone Head gear
Humidifier: resmed H5i
CPAP Pressure: 18/8
CPAP Software: SleepyHead

Other Comments:

Sex: Undisclosed
Location: USA

Post: #3
RE: ahi levels
(09-30-2013 02:06 AM)rjew123 Wrote:  Hi i am new i have a f&p premo i had a ahi reading of 10 last night but the first 2 nights were around 5. anyone know why would this happen?

Welcome!

What eviltim said. also, your pressure could be too low at times. For 2 years, I was not sleeping more than 2 hours at a time when I was on CPAP therapy. I feel my pressure was too low as now I have an auto set machine and I sleep more than 2 hours at a time.

There could be a lot of reasons for AHI being high. Mine has consistently been under 2 each night and then Saturday night and during my nap (I have been having some sinus issues), my AHI was 4.5 average. I don't know why it was higher that day but it was.

I also would like to suggest checking to see if you can use sleepyhead software if your machine has an SD card or some other form of data on your machine and check your stats. I am still learning what all of it means.

Be your own advocate!
09-30-2013 04:20 AM
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Moriarty Offline

Advisory Members

Posts: 270
Joined: Jul 2012

Machine: Respironics REMStar 50 Series Auto
Mask Type: Nasal pillows
Mask Make & Model: Fisher & Pakel Pilairo Q
Humidifier: Respironics System One
CPAP Pressure: 8.5-20 (average 9.4)
CPAP Software: SleepyHead

Other Comments: Image above is my CPAP machine...

Sex: Male
Location: Toowoomba - Qld - Australia

Post: #4
RE: ahi levels
Hi rjew123

I find that my AHI fluctuates depending on how well I sleep for what-ever reason...

In particular, sleeping on my back makes my AHI quite a bit higher.

Sleeping on my side gives me an AH of around 1.5 average.
(This post was last modified: 09-30-2013 06:12 AM by Moriarty.)
09-30-2013 06:12 AM
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trish6hundred Offline

Advisory Members

Posts: 6,449
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Full face mask
Mask Make & Model: Fisher & Paykel Simplus
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #5
RE: ahi levels
Hi rjew123,
WELCOME! to the forum.!
Hang in there for more responses to your post and best of luck with your CPAP therapy.

trish6hundred
09-30-2013 08:12 AM
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bwexler Offline

Advisory Members

Posts: 563
Joined: Mar 2012

Machine: PRS 1 BiPAP autoSV Advanced, with Heated Tube humidifier
Mask Type: Nasal mask
Mask Make & Model: Sleepweaver √Član
Humidifier: Resperonics Heated Tube humidifier
CPAP Pressure: Max pressure 25.0 cm H20, Max
CPAP Software: SleepyHead EncorePro

Other Comments: CMS 50i with Software for SpO2

Sex: Male
Location: San Marcos, CA, USA

Post: #6
RE: ahi levels
I suspect you have it backwards.
How well you sleep depends on your AHI.
Your AHI fluctuates depending on your sleep position, your leaks, nasal congestion, etc.

(09-30-2013 06:12 AM)Moriarty Wrote:  Hi rjew123

I find that my AHI fluctuates depending on how well I sleep for what-ever reason...

In particular, sleeping on my back makes my AHI quite a bit higher.

Sleeping on my side gives me an AH of around 1.5 average.
09-30-2013 01:22 PM
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Moriarty Offline

Advisory Members

Posts: 270
Joined: Jul 2012

Machine: Respironics REMStar 50 Series Auto
Mask Type: Nasal pillows
Mask Make & Model: Fisher & Pakel Pilairo Q
Humidifier: Respironics System One
CPAP Pressure: 8.5-20 (average 9.4)
CPAP Software: SleepyHead

Other Comments: Image above is my CPAP machine...

Sex: Male
Location: Toowoomba - Qld - Australia

Post: #7
RE: ahi levels
(09-30-2013 01:22 PM)bwexler Wrote:  I suspect you have it backwards.
How well you sleep depends on your AHI.
Your AHI fluctuates depending on your sleep position, your leaks, nasal congestion, etc.

You are correct in that effective treatment leads to better sleep but that is not what I referred t0...

It doesn't happen often but if I am having a poor night due to non-medical reasons like pre-occupation with some issue, caffeine overload, sore back/hip, or just plain going to bed too late then my AHI is higher than normal. For me normal is 1.5 to 2.0. A night as described above is usually 3 to 5.

If I have a cold I simply can't use CPAP. I have a couple of lousy nights sleeping upright in my lounge chair so I don't keep my wife awake with my sleeping.
10-06-2013 06:03 PM
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skyler Offline

Preferred Members

Posts: 75
Joined: May 2013

Machine: Respironics ASV
Mask Type: Nasal mask
Mask Make & Model: Respironics Wisp
Humidifier: System One Respironics
CPAP Pressure: 8-12-20
CPAP Software: Not using software SleepyHead

Other Comments: Diagnosed February 2008

Sex: Undisclosed
Location: Norfolk, Virginia

Post: #8
RE: ahi levels
No one knows what comes first the ahi or the sleep. Give yourself time to adjust to the machine. Look at averages and get the big picture.
If you have only been using the machine for three days good for you checking your numbers already. People gave you a good idea of what may be happening. How are you feeling?
10-07-2013 09:03 AM
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