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Interesting night- Adjusted pressure part way through night
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dozydave Offline

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Posts: 20
Joined: Nov 2014

Machine: Philips System One Auto for Canada
Mask Type: Nasal mask
Mask Make & Model: Resmed Mirage FX
Humidifier: S1 heated humidifier
CPAP Pressure: 8-10
CPAP Software: SleepyHead

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Sex: Male
Location: Canada

Post: #1
Interesting night- Adjusted pressure part way through night
I am a couple of months into the CPAP experience and adjusting pretty well. My AHI dropped immediately from 43 (sleep study) to 1-2 after starting with the machine. My prescribed pressures were causing a lot of lip leak, mouth dryness etc. so I tried dropping my pressure to 5-6 constant. Surprisingly my AHI did not change. A few nights later I boosted it again in the 6-10 range thinking I could tweak it a bit more. Immediately my lip leak developed again and it was so uncomfortable, I woke up in the middle of the night and adjusted it back down again. However, the trade-off seems to be more AHI events with lower pressure.

I have tried a screenshot to show what happened. Any observations or suggestions?


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01-19-2015 01:41 PM
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eviltim Offline

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Posts: 408
Joined: Aug 2013

Machine: Resmed S9 VPAP
Mask Type: Full face mask
Mask Make & Model: Resmed AirFit F10
Humidifier: H5i heated humidifer
CPAP Pressure: 5 exhale/9 inhale
CPAP Software: SleepyHead

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Sex: Male
Location:

Post: #2
RE: Interesting night- Adjusted pressure part way through night
That pretty much comports with my experience. More pressure = less events but more risk of side effects.

Generally, it's a good idea to leave it alone for a week or two at a time so you get a good sample size. Sometimes odd stuff just happens, maybe you slept on your back more after changing it.

If your AHI is good at 5-6 and you feel you are sleeping well, I'd just leave it there.
01-19-2015 01:57 PM
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quiescence at last Offline

Advisory Members

Posts: 753
Joined: Nov 2014

Machine: REMstar System One with Autoflex
Mask Type: Full face mask
Mask Make & Model: Quattro AirFit F10
Humidifier: yes typical setting = 4
CPAP Pressure: 5-13 Autotritrating CPAP
CPAP Software: SleepyHead EncoreBasic

Other Comments: CMS-50F Plus oximeter /w SPO2 Assistant software. Avowed mouth-breather switching to nose-breathing

Sex: Male
Location: US

Post: #3
RE: Interesting night- Adjusted pressure part way through night
agree you need not fuss if you are not having poor results (pressure range 5-6). feeling rested is one of the results you should be experiencing.

if you are not feeling rested, we'll be helped by a couple other data points.

flow - thanks for that, suggest you change the y axis to -60 min 60 max
pressure - thanks for that, suggest you change the y axis to 4 min 12 max
respiration - y axis 5 min 25 max
insp - good indicator for sleep quality and comparison to expr
expr - good indicator for sleep quality and comparison to insp
tidal volume - really helpful to me, as I gain some insight from changes through the night.
minute volume - an extra.
leakage - an extra unless it shows large leak.

I listed these in my personal preference order. other might key in on different attributes.

Dedicated to QALity sleep.
You'll note I am listed as an Advisory Member. I am honored to be listed as such. See the fine print - Advisory Members as a group provide advice and suggestions to Apnea Board administrators and staff concerning Apnea Board operation and administrative policies. Membership in the Advisory Member group should not be understood as in any way implying medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.
01-19-2015 02:46 PM
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