Post Reply 
Leak baseline
Author Message
Jim Bronson Offline

Advisory Members

Posts: 264
Joined: Dec 2014

Machine: ResMed Airsense 10 Elite
Mask Type: Nasal mask
Mask Make & Model: ResMed Mirage FX
Humidifier: Built-in
CPAP Pressure: 9.2
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: California

Post: #1
Question Leak baseline
My leak rate always baselines at 3.6. Is this normal for a nasal mask with leaks out the exhaust vent or should the software compensate and show a leak of zero as normal?
(This post was last modified: 10-29-2015 07:42 PM by Jim Bronson.)
10-29-2015 07:40 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
zonk Offline

Advisory Members

Posts: 7,908
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: Leak baseline
The software report whatever on the SD card, no more, no less

ResMed machines report unintentional leak (total leak minus mask vents leak rate), you'll need to tell the machine, what type of mask are you using. ResMed reckon, leak at or below 24 L/m is acceptable
10-29-2015 09:22 PM
Find all posts by this user Post Reply Quote this message in a reply
Jim Bronson Offline

Advisory Members

Posts: 264
Joined: Dec 2014

Machine: ResMed Airsense 10 Elite
Mask Type: Nasal mask
Mask Make & Model: ResMed Mirage FX
Humidifier: Built-in
CPAP Pressure: 9.2
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: California

Post: #3
RE: Leak baseline
So I must have a tiny fixed leak somewhere. I'm not going to worry about it; just curious. The machine is set to nasal type. Thanks for the info.
10-31-2015 07:27 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
A1BSTEG Offline

Members

Posts: 6
Joined: Nov 2015

Machine: AirSense10 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: Resmed HumidAir
CPAP Pressure: 10-20
CPAP Software: SleepyHead

Other Comments: CPAPing since 1986!!

Sex: Male
Location: Sunny Florida

Post: #4
RE: Leak baseline
(10-29-2015 09:22 PM)zonk Wrote:  The software report whatever on the SD card, no more, no less

ResMed machines report unintentional leak (total leak minus mask vents leak rate), you'll need to tell the machine, what type of mask are you using. ResMed reckon, leak at or below 24 L/m is acceptable

Does the Airsense 10 Autoset allow me to define which full face mask I have? I don't see where to do so. I am presuming that there are different base leak rates for different types of full face masks. But perhaps the differences are not statistically significant.

Any thoughts?
01-24-2016 07:59 PM
Find all posts by this user Post Reply Quote this message in a reply
Gyddyup Offline

Preferred Members

Posts: 33
Joined: Oct 2015

Machine: Resmed Airsense 10
Mask Type: Full face mask
Mask Make & Model: F&P Simplus; Quattro Air
Humidifier: built-in
CPAP Pressure: 12.8 - 17.0
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Australia

Post: #5
RE: Leak baseline
nope, you can't define which full face mask you are using.

i suspect you are correct, as the difference in numbers would not be that great.
01-24-2016 11:06 PM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
PaytonA Offline
Wiki Editor
Monitors

Posts: 3,013
Joined: Dec 2013

Machine: ResMed S9 VPAP Auto
Mask Type: Full face mask
Mask Make & Model: Resmed Mirage Quattro
Humidifier: H5i(distilled-top up)
CPAP Pressure: VAuto MinE14.0 MaxI 20.6 PS4.0
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: Orange County,California

Post: #6
RE: Leak baseline
Some of us have differing opinions on how Resmed calculates unintentional leak. The differences effect the purpose of the mask type setting.

Your machine measures the pressure at the machine. There are different lengths and diameters of hoses and different sizes of elbows on the mask connection. If you set your machine to give you 10 cm/H2O of pressure you will always get less at your face unless the machine knows the pressure drop between it and your face. The mask type and the hose type give the machine this information.

I assure you that I can tell the difference when I switch from a nasal pillows mask to a full face mask. If I forget to change the setting when I go from nasal pillows to full face mask and forget to change the setting, my FFM will do push-ups on my face when the machine switches from EPAP to IPAP and vice versa. As tight as my headgear is, that is a significant difference.

Best Regards,

PaytonA
01-25-2016 12:51 AM
Find all posts by this user Post Reply Quote this message in a reply
GPSMapNut Offline

Advisory Members

Posts: 175
Joined: Nov 2015

Machine: DreamStation Auto
Mask Type: Nasal pillows
Mask Make & Model: Resmed AirFit P10 and PR DreamWear
Humidifier: DreamStation + heated hose
CPAP Pressure: 9-16
CPAP Software: SleepyHead EncorePro Other Software

Other Comments: Used Respironics REMstar Pro with C-Flex for 11 years and ResMed S9 Elite loaner for 3 months

Sex: Male
Location: Mississauga, ON, Canada

Post: #7
RE: Leak baseline
I think that the difference between the pressure at the machine and the pressure delivered through the mask is the main reason why, I was always asked to bring the mask I normally use to the titration study.
I suspect that changing the mask type setting in the machine has mostly to do with how machine interprets sensor feedback - calculates unintentional / intentional leak rate, classifies events and so on.

Everything I post on this board is nothing more than an opinion expressed by an apneak. Normally, it's based on facts and experience but sometimes, I may get things wrong or not have all the facts.
I reserve the right to change my mind. Why? Because tomorrow I may know better.
01-25-2016 11:11 AM
Find all posts by this user Post Reply Quote this message in a reply

Donate to Apnea Board
Post Reply 


Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  One good night, now leak issues? sleepyguy99 11 391 Today 02:14 PM
Last Post: sleepyguy99
  [Pressure] Another New Player with Some Leak Issues Platypus 6 234 11-28-2016 06:17 PM
Last Post: Sleeprider
  swift mask 'leak' noise--but not leaking... hegel 11 755 11-27-2016 09:53 PM
Last Post: Dangerous Dave
  Not so new member having mask leak issues erikk 9 365 11-26-2016 02:15 PM
Last Post: erikk
  Leak rate abrun7 8 468 11-22-2016 09:02 PM
Last Post: Sleepster
  My Leak Issue! harmon k 5 295 11-14-2016 05:22 PM
Last Post: edfreeman
Thumbsup [CPAP] Mouth Leak? Saskie 5 335 11-13-2016 07:01 PM
Last Post: Saskie

Forum Jump:

Who's Online (Complete List)