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A-Flex Off - AHI cut in half.
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Player54 Offline

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Posts: 1
Joined: Aug 2016

Machine: Phillips Respironics Dreamstation Auto
Mask Type: Nasal pillows
Mask Make & Model: ResMed AirFit P10
Humidifier: Dreamstation humidifier
CPAP Pressure: 8-13
CPAP Software: SleepyHead

Other Comments:

Sex: Female
Location: Nevada, USA

Post: #11
Thumbsup RE: A-Flex Off - AHI cut in half.
Did you also get better sleep with turning off the A-Flex, did this improve how you felt the next day?
08-31-2016 11:48 AM
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Maskup Sleepwell Offline

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Posts: 55
Joined: Aug 2016

Machine: Respironics Dreamstation Auto BiPAP
Mask Type: Full face mask
Mask Make & Model: Resmed AirFit F10 FFM
Humidifier: Dreamstation Heated Humidifier
CPAP Pressure: EP 16-20 IP 17.5-20 PS 1.5-4.0
CPAP Software: SleepyHead EncorePro

Other Comments: Untreated AHI 48.0 - Treated AHI 1.1 (30 day average)

Sex: Male
Location: Santa Clarita, California

Post: #12
RE: A-Flex Off - AHI cut in half.
Interesting ... may have to play around with my AFLEX and see what happens.

I would definitely tighten up your range. Maybe make your low end 1-2 below your typical low, and 2 above your 90%. Turn off ramp if you can. Excessive high pressure can impact your AHI just as bad as pressures too low. If you let your machine have free range on the high end, it'll bite you.
(This post was last modified: 08-31-2016 12:52 PM by Maskup Sleepwell.)
08-31-2016 12:51 PM
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NorthernGuy Offline

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Posts: 49
Joined: May 2016

Machine: Philips Dreamstation Auto CPAP
Mask Type: Full face mask
Mask Make & Model: F&S Full face
Humidifier: Dreamstation integrated
CPAP Pressure: 8-14
CPAP Software: SleepyHead

Other Comments: New (couple months) APAP user.

Sex: Male
Location: New York State, USA

Post: #13
RE: A-Flex Off - AHI cut in half.
Thanks for the advice. Ramp is definitely off. The machine starts at 8 cm and my 90% is around 10-10.5 (30 day 90% average). Pressure never exceeds 13.5 (usually on hits that when sleeping on back and my head angles down towards my chest), so I haven't had a reason to dial back on the high end. The pressure hasn't run away. I will definitely consider lowering it though.

Does anyone know if the Dreamstation uses the high pressure limit as a true limit or does it affect the way the algorithm works?
08-31-2016 08:13 PM
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NorthernGuy Offline

Preferred Members

Posts: 49
Joined: May 2016

Machine: Philips Dreamstation Auto CPAP
Mask Type: Full face mask
Mask Make & Model: F&S Full face
Humidifier: Dreamstation integrated
CPAP Pressure: 8-14
CPAP Software: SleepyHead

Other Comments: New (couple months) APAP user.

Sex: Male
Location: New York State, USA

Post: #14
RE: A-Flex Off - AHI cut in half.
(08-31-2016 11:48 AM)Player54 Wrote:  Did you also get better sleep with turning off the A-Flex, did this improve how you felt the next day?

I don't think the AHI change in 6-7 to <3 resulted in that much better feeling the next day. The biggest change came from the start of therapy getting down to AHI 6-7 range.

I was actually trying out all of the A-Flex settings, because I didn't notice much difference between A-Flex settings of 1, 2, and 3 (either in breathing effort or AHI numbers). When I turned A-Flex off, exhale breathing effort jumped (but not intolerable). I tried sleeping with the A-Flex off (slightly uncomfortable the first night) and amazingly my AHI dropped. Now I don't notice that A-Flex is off after the first 2-3 breaths each evening.
08-31-2016 08:23 PM
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