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pls define unclassified apneas
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nativedancer Online

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Joined: Mar 2015

Machine: Resmed S9 Vpap ST
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: Resmed H5i
CPAP Pressure: 17.8/12.4
CPAP Software: Not using software

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Sex: Male
Location: Hell's Half Acre, Piedmont Plain, NC

Post: #1
pls define unclassified apneas
I have a new resmed s9, and the first 4 nights it shows no central aps, no obs, and leaks around 0-15, but a large number of unknowns, whatever they are.
06-19-2015 07:18 PM
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trailrider Offline

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Posts: 304
Joined: Feb 2015

Machine: A10 Autoset for Her
Mask Type: Nasal mask
Mask Make & Model: Eson or P10
Humidifier: autoset
CPAP Pressure: 6-12 DME, 7-13 me
CPAP Software: SleepyHead

Other Comments: engineer. EPR at 3, unheated hose, humidity at 2. Routine hose entanglement.

Sex: Female
Location: Ontario

Post: #2
RE: pls define unclassified apneas
Others here understand the Resmed algorithm better than me. But the unknowns could by a hypopnea, a disturbance from you coughing or sneezing, etc. Don't worry about them for now. Keep on the therapy and getting used to the treatment. In a month or two, then take another look at them.
06-19-2015 07:27 PM
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zonk Offline

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Joined: Feb 2012

Machine: A10 AutoSet
Mask Type: Nasal mask
Mask Make & Model: Activa LT
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CPAP Pressure: 9/13
CPAP Software: ResScan

Other Comments: CPAP since Nov 2010

Sex: Male
Location: Australia

Post: #3
RE: pls define unclassified apneas
(06-19-2015 07:18 PM)nativedancer Wrote:  I have a new resmed s9, and the first 4 nights it shows no central aps, no obs, and leaks around 0-15, but a large number of unknowns, whatever they are.
Unknown Apnea http://www.resmed.com/content/dam/resmed...er_eng.pdf
An apnea during which a leak higher than 30 L/min occurs, precluding accurate determination of whether the apnea is obstructive or central.

You'll need to look into ResScan leak graph, to see the leak rate at the time "unknown apnea" scored
Might be for a minute or so, while lifting the mask, adjusting mask fit, or just large leak briefly

Whats maximum leak reported?
06-19-2015 07:38 PM
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storywizard Offline

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Posts: 350
Joined: Jul 2014

Machine: ResMed VPAP Adapt S9
Mask Type: Nasal pillows
Mask Make & Model: P10 taped to face
Humidifier: included with machine
CPAP Pressure: CPAP 11cm
CPAP Software: SleepyHead

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Sex: Male
Location: Vancouver, BC, Canada

Post: #4
RE: pls define unclassified apneas
OK, so I have an S9 Adapt, the lesser of the models. Because it is an ASV, it does not differentiate between CAs and OAs...it assumes I am using ASV so CAs are taken care of. I am not sure that other non ASV models would have that limitation, they "should" show CAs and OAs, I would guess. In the Adapt's case the machine is merely showing Apneas, they could be anything...it does show Hypopneas.

Unclassified can mean that leaks are high, that is above the red line which makes it hard for the machine to tell the difference, it may also mean that your particular machine
just does not know the difference...

Sorry if this does not help, it was hard to find any real info out there, but it interested me too as I have been getting ready for a CPAP titration on Monday and wanted to know how the Apneas were doing...will have to wait...

all the best,

Storywizard
(This post was last modified: 06-20-2015 06:05 PM by storywizard.)
06-19-2015 10:40 PM
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nativedancer Online

Advisory Members

Posts: 118
Joined: Mar 2015

Machine: Resmed S9 Vpap ST
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: Resmed H5i
CPAP Pressure: 17.8/12.4
CPAP Software: Not using software

Other Comments:

Sex: Male
Location: Hell's Half Acre, Piedmont Plain, NC

Post: #5
RE: pls define unclassified apneas
Thanks Storywizard. I probably fret too much; Dr is not concerned at all w/the apneas --he was mainly interested in the overnight oximeter report, and once he realized it was a fat 98, he said, hey, see you in December.
(This post was last modified: 06-27-2015 08:04 PM by nativedancer.)
06-27-2015 08:03 PM
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AlanE Offline

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Machine: ResMed AirSense 10 Autoset
Mask Type: Nasal pillows
Mask Make & Model: P10 & Mirage Liberty backup
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CPAP Pressure: 10-14
CPAP Software: ResScan SleepyHead

Other Comments: ʕ•ᴥ•ʔ So Long, and Thanks for All the Fish

Sex: Male
Location: Southwest Florida

Post: #6
RE: pls define unclassified apneas
Whenever mine scores a UA it usually is during a large leak. Not sure on your machine but on the A10 when it detects an apnea it starts a small oscillation of pressure "1cm H2O peak-to-peak at 4hz" to determine if your airway is blocked or open. Because of the leak it can't get a good reading so it flags it as UA. Not all UA happen during leaks its just the most common I have found.

(shaded area is a leak)
[Image: ua.PNG]



Using FlashAir W-03 SD card in machine. Access through wifi with FlashPAP or Sleep Master utilities.

I wanted to learn Binary so I enrolled in Binary 101. I seemed to have missed the first four courses. Big Grinnie
(This post was last modified: 06-27-2015 09:22 PM by AlanE.)
06-27-2015 09:21 PM
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