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How to find leak rate?
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jb1176 Offline


Posts: 19
Joined: Apr 2014

Machine: ResMed S9 AutoSet with Hi5 humidifier
Mask Type: Nasal mask
Mask Make & Model: ResMed Air Fit P10 nasal pillow
Humidifier: ResMed Hi5
CPAP Pressure: 7
CPAP Software: Not using software

Other Comments:

Sex: Male
Location: Illinois

Post: #1
How to find leak rate?
Using ResMed Auto Set S9 but not set on Auto. Using ResMed P10 Nasal pillows medium. Pressure level set at 7.

How do I get the leak rate statistics from the Info button? I get a green smiley face each day I check the info but I don't know how to get the actual leak rate. Can anyone give me a step by step direction to getting those figures? The manual is useless.

Untreated AHI at sleep study was 35.8. Treated AHI has been 2, 0.5, 0.4, 0.2, 0.1, 0.5, 0.8 in that order for the past week. Have been on the machine for three weeks.

Feel much better in the mornings but am concerned that the leak rate may not be good because AHI numbers dropped and are now rising slowly. Scores are still great compared to untreated AHI but I want to stop the slow rise in AHI if possible.

05-23-2014 05:19 AM
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zonk Offline

Advisory Members

Posts: 7,946
Joined: Feb 2012

Machine: A10 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
Humidifier: Integrated /ClimateLineAir
CPAP Pressure: 9/13
CPAP Software: ResScan

Other Comments: CPAP since Nov 2010

Sex: Male
Location: Australia

Post: #2
RE: How to find leak rate?
Press and hold both silver buttons for 3 sec and turn the push dial
All explained in the clinical manual, scroll down to 'how to ask for the manual via Email'

S9 setup pictures and video

S9 data guide

you might also want to download the software, gives you more detailed information and graphs
ResScan and SleepyHead download links

Feeling much better in the mornings is good sign
AHI 5 and below is normal while on PAP
Leak 24 L/m and below is okay
(This post was last modified: 05-23-2014 06:31 AM by zonk.)
05-23-2014 06:22 AM
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ImaSurvivor Offline

Preferred Members-2

Posts: 322
Joined: Nov 2013

Machine: ResMed S9 Auto
Mask Type: Nasal pillows
Mask Make & Model: Swift FX
Humidifier: H5i Heated Humidifier, ClimateLine Tubing
CPAP Pressure: 10
CPAP Software: SleepyHead

Other Comments: Moderate Sleep Apnea, Began using CPAP 11/27/2013

Sex: Female
Location: New York State

Post: #3
RE: How to find leak rate?
As Zonk said, press the two silver buttons next to the knob on the right and hold them a few seconds. The screen that appears will have a smiley face. It shows usage time for the night above the smile face and the AHI for the night below the smile face. While looking at that screen, turn the knob on right down one click. Don't push it ... just turn it. Another screen will appear and the leak rate is the last line in the data shown. You want your leak rate to be under 24L/min.

Your AHI is excellent. Don't beat yourself up if they rise and drop. As long as you are under 5 you are ok. If you are consistently high is when you want to be aware. Also, make sure you change your mask as often as your insurance allows. I have Swift FX nasal pillows. I have to change my pillow/cushion each month. I had noticed my AHI was increasing and lingering in the high range and I was beginning to have that tired feeling from apnea during the daytime. After doing some reading, I found that I should change my pillows regularly as they lose their edge and become less effective. I am allowed two pillows each month. I gauge how often I have to change them so I don't waste any. I can get by with just one a month. I had used the same pillows for 3 months before I found I could change them. I thought I had to wait 6 months but that is inclusive of the headgear that also stretches out and doesn't fit as well over time.
(This post was last modified: 05-23-2014 08:04 AM by ImaSurvivor.)
05-23-2014 07:56 AM
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