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What is Normal Average Leak Rate?
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Sleeprider Online
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Machine: Resmed Aircurve 10 Vauto
Mask Type: Nasal pillows
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CPAP Software: ResScan SleepyHead EncoreBasic

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Location: Where they make Respironics

Post: #41
RE: What is Normal Average Leak Rate?
Lanco, the design leak rate for any mask is a curve that changes with pressure, so there is no fixed leak rate, rather it is a designed venting flow/pressure relationship. Some masks publish this curve, and for others it is nearly impossible to find. Philips Respironics machines will measure and report both the total leak and excess leak, while Resmed only reports the excess leak. I assume excess leak is calculated from something like the 5-percent leak rate. I think it would be helpful if they all reported total leak, but apparently the companies don't agree.

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08-23-2016 07:49 AM
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Lanco Offline

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Posts: 154
Joined: Jun 2016

Machine: Resmed S9 Autoset, Apex XT Fit
Mask Type: Nasal mask
Mask Make & Model: Apex Wizard 210 & Profile Lite, Wizard 220 FFM, Nuance
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CPAP Pressure: 8.5-17
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Location: Pensacola, Florida

Post: #42
RE: What is Normal Average Leak Rate?
Thanx Sleeprider, yes I know. I think a significant thing with this data is my average pressure is 8.3 and it shows 55 lpm as the norm. My mask exhaust flow, at about 8 cmH20 is about 24. So, this certainly points in a certain direction.
08-23-2016 02:25 PM
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rich2905 Offline

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Machine: Resmed Autoset S10
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: Unsure
CPAP Pressure: 15
CPAP Software: SleepyHead

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Sex: Male
Location: Australia

Post: #43
RE: What is Normal Average Leak Rate?
Interesting how resmed works.

According to it I had zero leaks last night but I know that was not true but they were not major.


Rich
08-23-2016 04:10 PM
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Sleepster Offline
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Machine: ResMed AirCurve10 VAuto
Mask Type: Full face mask
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CPAP Pressure: MaxI 13.6 | MinE 5.2 | PS 4.4
CPAP Software: ResScan SleepyHead

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Location: Houston, Texas

Post: #44
RE: What is Normal Average Leak Rate?
(08-23-2016 07:49 AM)Sleeprider Wrote:  I assume excess leak is calculated from something like the 5-percent leak rate. I think it would be helpful if they all reported total leak, but apparently the companies don't agree.

As you say, ResMed reports only the unintentional leak rate (what you are calling the excess leak rate). I don't know how they do it, and I don't think anyone else does, either. The thing is, if you keep your method a secret, no one can criticize your method for being invalid!

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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.
08-23-2016 08:15 PM
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Lanco Offline

Advisory Members

Posts: 154
Joined: Jun 2016

Machine: Resmed S9 Autoset, Apex XT Fit
Mask Type: Nasal mask
Mask Make & Model: Apex Wizard 210 & Profile Lite, Wizard 220 FFM, Nuance
Humidifier: Resmed H5i
CPAP Pressure: 8.5-17
CPAP Software: ResScan SleepyHead Other Software

Other Comments: Easy Compliance Software 3.2.1 and Easy Compliance Lite Software 3.4

Sex: Male
Location: Pensacola, Florida

Post: #45
RE: What is Normal Average Leak Rate?
Just an update. I had the leak alarm turned on last night for the first time. It never sounded. Good news I would guess.
08-24-2016 01:52 AM
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