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30 Days, AHI vs Leaks ?
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OB-Left Offline

Preferred Members

Posts: 39
Joined: May 2015

Machine: ResMed Airsence 10 Auto
Mask Type: Full face mask
Mask Make & Model: AirFit F10, Mirage Quatro
Humidifier: Integrated
CPAP Pressure: 6 - 12
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Michigan

Post: #1
30 Days, AHI vs Leaks ?
So I have reached the 30 day mark for my treatments and have never felt better !!:grin: With your help my starting pressure has been changed from 4 to 6 and treatment range increase from 5-12 to 6-12.

30 day ave AHI = 1.98 (O =.35, H = .37, CA = 1.23)
Last 7 ave AHI = 1.36 (O =.13, H = .41, CA = .82)
Friday night I had my first sub 1.0 AHI score.

[Image: Screenshot%201.png]

[Image: Screenshot%202.png]

However, I had a High Leak rate. Over limit less than 1% but near double normal. Next night leaks drop but AHI goes back up to just under 1.0? So is this still me getting used to treatment, or is my pressure in need of more adjustment? Or is shooting for that low AHI number continuously a pipe dream? Thanks

[Image: Screenshot%20%203.png]
06-07-2015 04:13 PM
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under pressure Offline

Preferred Members-2

Posts: 139
Joined: Feb 2014

Machine: ResMed Airsense 10 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: Integrated
CPAP Pressure: 11 - 14
CPAP Software: ResScan SleepyHead

Other Comments: Also use F&P Icon Auto and Z1 Auto for travel and Backup

Sex: Male
Location: Colorado

Post: #2
RE: 30 Days, AHI vs Leaks ?
You're doing well, your leak rate is in the acceptable area which for ResMed is below 24 lpm, so doesn't appear that you are having a big problem with leaks.

Your AHI is terrific and keep in mind that the Centrals you are showing are most probably Sleep/Wake Junk (SWJ)......when we transition between wake state and sleep state you'll usually see a few scattered centrals get scored. If this was in a sleep study environment they would probably ignore those centrals, so don't sweat your AHI number, it really does look good.....lots of folks would be envious of your Index!

Probably at this point rather than chasing your tail for a low AHI number you should go by how you feel in the morning. More energy, less daytime sleepiness and so forth, that's your main target and it sounds like you feel a lot better now.

I'd tend to just stay the course for now with now big adjustments and keep monitoring your numbers like you're doing, maybe try and get a little lower leak rate, but it's really not bad at all......strive for comfort at this point.
06-07-2015 05:44 PM
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trish6hundred Offline

Advisory Members

Posts: 6,291
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: #3
RE: 30 Days, AHI vs Leaks ?
Hi OB-Left,
It sounds like you are off to a really good start, keep up the good work and hang in there for more responses to your post.

06-07-2015 06:27 PM
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vsheline Online

Advisory Members

Posts: 1,906
Joined: Jul 2012

Machine: S9 VPAP Adapt (USA Model# 36007, not better 36037 or 36067)
Mask Type: Full face mask
Mask Make & Model: F10 or SimPlus w/ 2Liners. MirageQuatro & Gecko gel pad
Humidifier: H5i
CPAP Pressure: 15 EPAP, PS 5-10
CPAP Software: ResScan

Other Comments: Marfan Syndrome, chronic bradycardia, occasional Cheyne-Stokes Respiration

Sex: Male
Location: California, USA

Post: #4
RE: 30 Days, AHI vs Leaks ?
Hi OB-Left,

Your amount of leaking looks okay to me. At least 95% of the time during the night of June 5 the leaking was 21.6 L/minute or less.

On June 6 your centrals we're happening throughout your sleep period and were happening at all pressures, which I think is pretty normal. These do not look to me like SWJ.

I think your number of central apneas (about one per hour) is nothing to be concerned about unless the central apneas are lasting longer than about 30 or 40 seconds I think, or a pulse oximeter shows your SpO2 is dropping below 90% I think, or unless you are feeling poorly upon waking up.

Most health insurance companies are not concerned unless the sum of central apneas plus central hypopneas is at least 5 per hour.

I think a difference of 6 cmH2O between Min Pressure (6) and Max Pressure (12) is a little large. I suggest the Min Pressure be increased to 8, so the pressure will be more stable. The higher the Min Pressure is, the more slowly the machine between events will gradually decrease the pressure. A pressure of 8 seems to be about the pressure you need most of the time.

Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment. The Advisory Member group provides advice and suggestions to Apnea Board administrators and staff on matters concerning Apnea Board operation and administrative policies - not on matters concerning treatment for Sleep Apnea. I think it is now too late to change the name of the group but I think Voting Member group would perhaps have been a more descriptive name for the group.
(This post was last modified: 06-07-2015 08:58 PM by vsheline.)
06-07-2015 08:39 PM
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