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Waking up with headaches, have S9 data
#31
(10-20-2012, 10:55 PM)bryank1 Wrote: I was told by the respiratory therapist from ResMed that a clear airway was a central apnea.

That's the jargon that those techs use. For a patient with simple OSA, the difference doesn't really matter. If your CA index is too high the remedy is to try and lower the pressure or just wait until the patient adjusts.

Whether you call these CA events clear-airway apneas (as Respironics machines do) or central apneas (as ResMed machines and respiratory techs do) is often just a matter of semantics.
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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.
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#32
(10-20-2012, 10:55 PM)bryank1 Wrote: I was told by the respiratory therapist from ResMed that a clear airway was a central apnea.
ResMed adamant its CSA
FOT determine if airways open or closed ... if open (for at least 10 sec)... its CSA
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#33
(10-21-2012, 03:39 PM)zonk Wrote:
(10-20-2012, 10:55 PM)bryank1 Wrote: I was told by the respiratory therapist from ResMed that a clear airway was a central apnea.
ResMed adamant its CSA
FOT determine if airways open or closed ... if open (for at least 10 sec)... its CSA

Dumb ? here, but what is FOT and CSA?
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#34
(10-21-2012, 07:50 PM)bryank1 Wrote: what is FOT and CSA?
CSA: Central Sleep Apnea
FOT: Forced Oscillation Technique

the S9 send send small puff of air (FOT) to test if airways is closed or open during an apnea

Apneas are classified as being central (open upper airway), obstructive (closed upper airway) or unknown.
Central apneas are scored when the resistance is low, and obstructive apneas when the resistance is high.
The classifier labels apneas ‘unknown’ when the inadvertent leak exceeds 30 L/min or the resistance is indeterminate.
Central and unknown apneas do not cause an increase in delivered pressure.

Central Sleep Apnea Detection and the Enhanced AutoSet Algorithm
http://www.resmed.com/au/assets/document...-paper.pdf


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#35
(10-21-2012, 08:32 PM)zonk Wrote:
(10-21-2012, 07:50 PM)bryank1 Wrote: what is FOT and CSA?
CSA: Central Sleep Apnea
FOT: Forced Oscillation Technique

the S9 send send small puff of air (FOT) to test if airways is closed or open during an apnea

Apneas are classified as being central (open upper airway), obstructive (closed upper airway) or unknown.
Central apneas are scored when the resistance is low, and obstructive apneas when the resistance is high.
The classifier labels apneas ‘unknown’ when the inadvertent leak exceeds 30 L/min or the resistance is indeterminate.
Central and unknown apneas do not cause an increase in delivered pressure.

Central Sleep Apnea Detection and the Enhanced AutoSet Algorithm
http://www.resmed.com/au/assets/document...-paper.pdf
Thanks Zonk. great explaination. So everyone on here was right on. The headaches subsided. The ahi is mainly low. I still don't quite understand certain aspects of the machine. For instance, I monitor my data every day. I see so many events. Lets say there is an obstructive event that is 20 seconds long. For starters, why is there still an obstructive apnea when the machine is delivering constant air pressure? Also, if the machine doesn't react until after the 1st 10 seconds, then why is there a 20 second apnea? Seems to me the constant pressure wouldn't let an obstructive even happen, however if it did (which in my case they do), then after the 10 seconds what is supposed to happen? Since it is already delivering constant pressure, what else can it do other than maybe give a burst in pressure.
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#36
It takes time to end the event by opening your airway. It is not an instantaneous thing. And it is dependent on what the ranges are on an autoPAP.

First it determines what is needed to keep your airway open as you relax in sleep.
Then it continually looks for an event that lasts longer than 10 seconds.
Then it slowly increases the pressure until that even no longer exists.

So if the pressure range is set way wide, there may or may not be a big climb from where it is to where it needs to be.
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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.




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#37
(10-21-2012, 08:32 PM)zonk Wrote: the S9 send send small puff of air (FOT) to test if airways is closed or open during an apnea.

Respironics "pressure pulse" is a pulse.

S9's FOT is a series of pulses that continues until the apnea ends.

Respironics pulse uses a much higher pressure change than Resmed's FOT.
Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
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#38
Well, I thought I would do an update here. The headaches did go away after about 21/2 to 3 weeks. Thanks for the replies.
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