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events/hour and mask leakage
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Johhny72 Offline

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Posts: 2
Joined: Apr 2015

Machine: AirSense10
Mask Type: Nasal mask
Mask Make & Model: ComfortGel
Humidifier: Respironics M Series
CPAP Pressure: 4-10
CPAP Software: Not using software

Other Comments:

Sex: Male
Location:

Post: #1
Question events/hour and mask leakage
How does my Airsense10 measure an event for the event/hour score.
What constitutes an event?

Sometimes when I am changing positions, I notice I grit my teeth and hold my breath for several seconds during the change, repositioning covers and my leg pillow. Is something like that recorded as a stop/breathing event?

How much time between breathes registers as an event.

How many events must one have to get less than the maximum of the 5 point score?

How does my machine measure mask leakage. It seems that no matter how I adjust my straps, my scores stay in the mid range area. I have had as high as an 18 and as low as a 2. I still wake up well rested and love my machine. I just don't understand the details I am asking about.
04-30-2015 10:41 AM
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PaytonA Offline
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Monitors

Posts: 3,047
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: #2
RE: events/hour and mask leakage
(04-30-2015 10:41 AM)Johhny72 Wrote:  How does my Airsense10 measure an event for the event/hour score.
What constitutes an event?

Sometimes when I am changing positions, I notice I grit my teeth and hold my breath for several seconds during the change, repositioning covers and my leg pillow. Is something like that recorded as a stop/breathing event?

How much time between breathes registers as an event.

How many events must one have to get less than the maximum of the 5 point score?

How does my machine measure mask leakage. It seems that no matter how I adjust my straps, my scores stay in the mid range area. I have had as high as an 18 and as low as a 2. I still wake up well rested and love my machine. I just don't understand the details I am asking about.

An apnea is a cessation of breathing for 10 seconds minimum. A hypopnea is a 50% reduction in breathing for 10 seconds minimum.

AHI is the total number of apnea and hypopnea events divided by the time slept so it is basically a time based cumulative average. 5 x hours slept=maximum total events to achieve AHI of 5 or less.

Using a nasal mask it is possible that you are getting mouth leakage while asleep. If 18 is your max, that is not a problem. All masks are subject to some inadvertant leakage. Resmed uses a rather complex method to make a good estimate of unintentional leakage. As long as the unintentional leakage is under 25.0 liters/minute, the machine can deal with it and maintain reasonable accuracy according to Resmed.

Best Regards,

PaytonA
04-30-2015 11:12 AM
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trish6hundred Offline

Advisory Members

Posts: 6,621
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: events/hour and mask leakage
Hi Johhny72,
WELCOME! to the forum.!
Hang in there for more responses to your post and much success to you with your CPAP therapy.

trish6hundred
04-30-2015 02:19 PM
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truetopath Offline

Preferred Members-2

Posts: 421
Joined: Feb 2015

Machine: PR system one 560p auto with a flex
Mask Type: Full face mask
Mask Make & Model: Resumed F10
Humidifier: PR system one
CPAP Pressure: 11
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Lake View, NY

Post: #4
RE: events/hour and mask leakage
Payton nailed it. Whenever I have to reach for something, etc and I know I'm going to hold my breath, I try to keep it to 10 seconds or less to not trigger a false event.
04-30-2015 04:15 PM
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