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Morning Numbers
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Sleepster Offline
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Machine: ResMed AirCurve10 VAuto
Mask Type: Full face mask
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Humidifier: HumidAir and SlimLine Hose
CPAP Pressure: MaxI 13.6 | MinE 5.2 | PS 4.4
CPAP Software: ResScan SleepyHead

Other Comments: Diagnosed Nov 2011. Conquered aerophagia.

Sex: Male
Location: Houston, Texas

Post: #21
RE: Morning Numbers
(04-11-2012 04:47 PM)shutterbug sue Wrote:  Good to know. I got the feeling she was just giving me a very short answer to get rid of me. What is a clear airway then if it's not a central apnea? How can you tell if you are having central apneas from the S9 readings in the SleepyHead software? How are central apneas treated?

I don't think she was being insincere. Here's the thing. When you stop breathing, that's an apnea. The machine then sends a pressure pulse to try to determine if your airway is obstructed. If it is obstructed, it counts it as an obstructive apnea (OA). If the airway is not obstructed, then it counts it as a CA. What's a CA?

It could be a true central apnea, or it could be just a clear-airway apnea. (You'd need the gear they use in a sleep study -- e.g. a chest belt to show no effort to breathe -- to tell for sure if it's a true central apnea).

The point here is that it probably doesn't matter for a patient who was diagnosed with obstructive sleep apnea. If the machine shows too many OA's, and the pressure can be raised to reduce that number, we conclude that raising the pressure reduces the number of OA's.

Likewise, if the machine shows too many CA's, and the pressure can be lowered to reduce that number, we conclude that lowering the pressure reduces the number of CA's.

Who cares what you call them?! They are periods of time where you're not breathing while asleep. Lowering the pressure reduces the number of those events that you experience.

So, I think the techs just use the jargon. They say too high of a pressure induces centrals, because they know that in many patients reducing the pressure reduces the number of centrals recorded by the machine.

What do they mean by a central? It's the thing recorded by the machine, called a CA. Resmed calls a CA a central apnea, Respironics calls a CA a clear-airway apnea.

A rose by any other name smells as sweet. Lowering the pressure reduces, in many patients with OSA, the number of CA events. A reduction in the number of CA's, by any other name, feels as sweet.

Sleepster
Apnea Board Moderator
www.ApneaBoard.com


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.
(This post was last modified: 04-12-2012 08:26 PM by Sleepster.)
04-12-2012 08:23 PM
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zonk Offline

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Posts: 7,908
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Machine: A10 AutoSet
Mask Type: Nasal mask
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Location: Australia

Post: #22
RE: Morning Numbers
S9 AutoSet can determine whether the airway is open or closed during an apnea but does nothing for central apnea and if you have a problem with central apnea then inquire about ASV titration from the doc
(This post was last modified: 04-12-2012 11:34 PM by zonk.)
04-12-2012 11:18 PM
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projman65 Offline

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Posts: 21
Joined: Apr 2012

Machine: Resmed S9 Autoset
Mask Type: Full face mask
Mask Make & Model:
Humidifier: Resmed 5i
CPAP Pressure: 9-16
CPAP Software: ResScan

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Sex: Male
Location: Tampa, Florida

Post: #23
RE: Morning Numbers
Thanks for all the input. it was never my intention to keep messing with the pressure setting. I am leaving the same settings on for 2 weeks and see what happens. I will download the ResScan software to better understand what's going on.

Thanks again.
04-13-2012 09:19 AM
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PaulaO2 Offline
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Posts: 8,065
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Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
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Location: western NC, USA

Post: #24
RE: Morning Numbers
Great!

And tell us what the results are! I really want to know! I don't have a data capable machine, dangit. I am jealous.

PaulaO2
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.
04-13-2012 09:23 AM
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