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[CPAP] Clear airway apnea
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mahfuzsujan Offline

Members

Posts: 4
Joined: Feb 2016

Machine: resmed airsense 10 autoset
Mask Type: Nasal mask
Mask Make & Model: Resmed airfit n10
Humidifier: none
CPAP Pressure: 4-15
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Dhaka, Bangladesh

Post: #1
Money Clear airway apnea
I am a new user of Resmed airsense 10 auto machine with Resmed airfit n10 nasal mask. I am not using any humidifier. My pressure level is set as 4 to 15. Mode is APAP. Recently I installed SleepyHead software. My average statistics is enclosed herewith, where it shows that my Clear Airway Index is always 2 or 3 times more than my obstructive index. Total average AHI is more than 3.5 and sometimes it is over 5 or even 6. One night statistic: AHI = 6.27 (CA = 3.69 + OA = 2.09 + H = 0.49). Please note that earlier my Central Apnea index was 0 in my sleep test study.

I am worried about my CA index. Should I change the mode (which is currently APAP) or should I change the pressure level (4-15). My machine supplier suggested me to change the machine. Can anyone suggest me what should I do now?
02-15-2016 07:28 AM
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DeepBreathing Offline
Wiki Editor
Moderators

Posts: 2,291
Joined: Sep 2013

Machine: Resmed S9 VPAP Adapt
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: Resmed H5i
CPAP Pressure: EPAP: 9 - 15 PS: 3 - 10
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: Perth, Western Australia

Post: #2
RE: Clear airway apnea
G'day mahfuzsujan. Welcome to Apnea Board.

It's not unusual to experience some clear airway apneas when you first start using xPAP therapy. In most cases they will go away after a few weeks or so as your body gets accustomed to the pressure. If your average AHI is 3.5, then you're doing pretty well, and the small number of CAs you're getting probably aren't worth worrying about.

It would help if you could attach a screen shot from SleepyHead showing a typical night - we need the data panel (the pie chart and the stuff below it), events, pressure, flow rate and leak rate. Once we see those charts we can give you some more detailed advice.

But there's no need to worry unduly, and don't let them talk you into buying a new machine just yet...

DeepBreathing
Apnea Board Moderator
www.ApneaBoard.com


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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.
02-15-2016 07:41 AM
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Crimson Nape Offline

Monitors

Posts: 1,323
Joined: Oct 2014

Machine: ResMed S9 Autoset
Mask Type: Other
Mask Make & Model: P-10 / F&P Simplus / DreamWear
Humidifier: H5i w/Climateline
CPAP Pressure: 8 - EPR 3
CPAP Software: SleepyHead

Other Comments: CMS-50F & 50IW

Sex: Male
Location: Georgia

Post: #3
RE: Clear airway apnea
Hi mahfuzsujan,
Welcome to the forum.

Like DB said, this is a normal occurrence when starting therapy. This might be nothing more than a pressure induced CA. A pressure induced CA is akin to sticking your head out of a moving car and trying to breathe. Another possibility is that you took a deep breath prior to the CA. and you didn't need another breath for more than 10 seconds.

Since you have SleepyHead, look at when a CA occurs. Expand the Flow Rate chart looking at your breathing pattern prior to the CA, as well as, looking at the pressure around that point in time. Also look at the duration in the Events tab.

Your numbers don't seem to show any cause for alarm. All I can say is to relax and enjoy the restful sleep.

Good Luck!

Statistics prove that people who have more birthdays live longer.
02-15-2016 09:47 AM
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mahfuzsujan Offline

Members

Posts: 4
Joined: Feb 2016

Machine: resmed airsense 10 autoset
Mask Type: Nasal mask
Mask Make & Model: Resmed airfit n10
Humidifier: none
CPAP Pressure: 4-15
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Dhaka, Bangladesh

Post: #4
RE: Clear airway apnea
Tanks for the replies. Actually I have been using this machine for 17 weeks (from December 26, 2015). On January 3, 2016, AHI-4.26, CA-1.94, OA-1.16 & H-1.16, where on February 4, 2016 AHI-5.27, CA-3.65, OA-1.22 & H-0.41, indicating CA has been increased. As suggested by both of you I tried to capture the screen shot accordingly.     .

Please advise.
02-16-2016 01:25 AM
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pholynyk Online

Advisory Members

Posts: 305
Joined: Mar 2015

Machine: ResMed AirSense 10 APAP
Mask Type: Full face mask
Mask Make & Model: Amara View
Humidifier: included
CPAP Pressure: 11-17
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Ontario, Canada

Post: #5
RE: Clear airway apnea
With 17 weeks of data, you have enough to look at the overview charts for the last two or three months. That will enable you to spot trends over time, instead of comparing two (semi-)random days.
You will be able to see AHI as well as its components. Then you can look at the other charts to see if you can spot some correlations - by eyeball, at this stage.
02-16-2016 01:55 AM
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mahfuzsujan Offline

Members

Posts: 4
Joined: Feb 2016

Machine: resmed airsense 10 autoset
Mask Type: Nasal mask
Mask Make & Model: Resmed airfit n10
Humidifier: none
CPAP Pressure: 4-15
CPAP Software: SleepyHead

Other Comments:

Sex: Male
Location: Dhaka, Bangladesh

Post: #6
RE: Clear airway apnea
Sorry it was typo error, 7 weeks not 17 weeks. After 1st 7 days, I took the report from the vendor (it was a ResScan report), who informed me that my problem is Central Apnea and not Obstructive Apnea. In the report Central Apnea was also mentioned as 3.5.

My question is: Is Central Apnea data of ResScan is same to Clear airway Apnea of SleepyHead? In the Redmed airsense 10 auto monitor Central Apnea is also been displayed as 2.2 to 2.5 now a days. Sorry once again for typo error.
02-16-2016 02:16 AM
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DeepBreathing Offline
Wiki Editor
Moderators

Posts: 2,291
Joined: Sep 2013

Machine: Resmed S9 VPAP Adapt
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: Resmed H5i
CPAP Pressure: EPAP: 9 - 15 PS: 3 - 10
CPAP Software: ResScan SleepyHead

Other Comments:

Sex: Male
Location: Perth, Western Australia

Post: #7
RE: Clear airway apnea
Quote: Is Central Apnea data of ResScan is same to Clear airway Apnea of SleepyHead?

Yes they are. It's just that you really need some additional instrumentation to say for certain that you're experiencing a true central apnea, so SleepyHead uses a more cautious terminology.

Although your central apneas are dominating, your total apnea is not too bad. Not enough to go for an ASV machine just yet (they are really expensive). One thing you might try in the meantime is to turn off the EPR (exhalation pressure relief). The EPR reduces the pressure as you breathe out, making it easier to exhale. However it is known to cause central apneas in some patients. Try reducing it from 3 to 2 or 1, or even turn it right off, and see if this makes a difference.

DeepBreathing
Apnea Board Moderator
www.ApneaBoard.com


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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.
02-16-2016 07:43 AM
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