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Feels like my inhalation is cut off by APAP (Dreamstation)?!
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chill Online

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Posts: 842
Joined: Mar 2016

Machine: DreamStation X500
Mask Type: Full face mask
Mask Make & Model: Walk-in Mask Closet
Humidifier: DreamStation
CPAP Pressure: 13-16
CPAP Software: SleepyHead

Other Comments: CPAP True Believer

Sex: Male
Location: Vancouver, Canada

Post: #11
RE: Feels like my inhalation is cut off by APAP (Dreamstation)?!
Yes, the AFlex drop is deeper and longer than the CFlex.
07-30-2016 06:34 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: #12
RE: Feels like my inhalation is cut off by APAP (Dreamstation)?!
I didn't notice much difference between A-flex 1,2, and 3 settings on the Dreamstation APAP, but 'Off' worked wonders for my AHI within 2 days of turning it off.
07-30-2016 08:04 PM
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Ghost1958 Offline

Advisory Members

Posts: 957
Joined: Aug 2014

Machine: PRS1 Series Sixty Auto Aflex
Mask Type: Nasal mask
Mask Make & Model: F&P Eson
Humidifier: PRS1 with Heated Hose
CPAP Pressure: 10.5 min 16 max
CPAP Software: SleepyHead EncoreBasic

Other Comments: Moderate to Severe SA Obstructive. Rapid O2 desat off the machine.

Sex: Male
Location: KY

Post: #13
RE: Feels like my inhalation is cut off by APAP (Dreamstation)?!
Check to see you are using c flex not cflex +
Cflex plus gives an inhalation drop c flex doesnt
07-30-2016 08:20 PM
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Snurkel Offline

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Posts: 26
Joined: Jul 2016

Machine: Respironics Dreamstation Auto CPAP
Mask Type: Nasal mask
Mask Make & Model: Fisher&Paykel nasal mask
Humidifier: Dreamstation
CPAP Pressure: CPAP 6
CPAP Software: SleepyHead

Other Comments:

Sex: Female
Location: Netherlands

Post: #14
RE: Feels like my inhalation is cut off by APAP (Dreamstation)?!
Thanks Chill, Northern Guy and Ghost1958.
The Dreamstation doesn't have a CFlex+ setting, so we can rule that one out.
Update of tonight with Flex off: no more air sucking! (by the machine at least). On the other hand: The Burps Are Back:-(.
So it seems to be either gasping or burping. The burps mostly tend to occur towards the early morning, I wonder why that would be? It doesn't seem to be related to the pressure, since that goes up also during earlier parts of the night.
07-31-2016 08:26 AM
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green wings Offline

Advisory Members

Posts: 543
Joined: Feb 2016

Machine: Respironics System One RemStar Pro (460)
Mask Type: Nasal pillows
Mask Make & Model: AirFit P10
Humidifier: integrated humidifier
CPAP Pressure: 13.0 cm
CPAP Software: SleepyHead

Other Comments: using CPAP since Jan. 2016

Sex: Undisclosed
Location: US

Post: #15
RE: Feels like my inhalation is cut off by APAP (Dreamstation)?!
Hi, Snurkel. I am not clear from reading your post whether your machine has a plain C-Flex setting (like the EPR on ResMed machines.) If it does, you might try that to see if you like it better. It doesn't drop the pressure until exhalation actually starts.

Re the burping problem, I can only guess that maybe you are swallowing a little bit of air all night and then at some point, you have swallowed so much that burping starts. Also, our breathing changes some during different stages of sleep, so you may be swallowing more air during REM sleep. Just guessing there. The air swallowing is a temporary problem for most people when they first begin CPAP. It continues for a few and they generally end up with a BiPAP machine.

Regarding the whole problem with not liking the way the changes in pressure feel with the Flex settings, I found that the air pressure changes from the CPAP machine seemed very strong and noticeable to me when I first started CPAP therapy. Now, when I'm awake and notice that the machine's Flex behavior and my breathing are not in sync, my breathing feels way stronger than the pressure from the machine.

I'm not sure if our breathing actually changes during the CPAP adjustment period, or if it has more to do with our threshold of perception.
07-31-2016 10:20 AM
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chill Online

Advisory Members

Posts: 842
Joined: Mar 2016

Machine: DreamStation X500
Mask Type: Full face mask
Mask Make & Model: Walk-in Mask Closet
Humidifier: DreamStation
CPAP Pressure: 13-16
CPAP Software: SleepyHead

Other Comments: CPAP True Believer

Sex: Male
Location: Vancouver, Canada

Post: #16
RE: Feels like my inhalation is cut off by APAP (Dreamstation)?!
There are only two Flex modes, the naming is for marketing purposes, as far as I can tell. From the Remstar manual:

Quote:C-Flex – Provides pressure relief upon exhalation to improve comfort based on your needs.

Quote:A-Flex/C-Flex+ – Provides pressure relief taking place at the end of inhalation and at the start of exhalation to improve comfort based on your needs.When providing Auto-Trial therapy, this comfort feature is called A-Flex. When providing CPAP or CPAP-Check therapy, this comfort feature is called C-Flex+.
07-31-2016 10:35 AM
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Snurkel Offline

Preferred Members

Posts: 26
Joined: Jul 2016

Machine: Respironics Dreamstation Auto CPAP
Mask Type: Nasal mask
Mask Make & Model: Fisher&Paykel nasal mask
Humidifier: Dreamstation
CPAP Pressure: CPAP 6
CPAP Software: SleepyHead

Other Comments:

Sex: Female
Location: Netherlands

Post: #17
RE: Feels like my inhalation is cut off by APAP (Dreamstation)?!
Thanks Green Wings for thinking along with me.
Meanwhile I changed the settings back to where it all started:
CPAP at 6. The APAP setting on the Dreamstation generates pressure spikes at regular intervals, which don't seem to be related to my breathing pattern. At every spike I start 'eating air' with every inhalation and I ended up feeling like a zeppelin and had to relieve myself in several ways.
So I'm back at the good old CPAP setting, without any Flex. Tonight will be the first full night on these settings, but my experience of part of last night are making me look forward to this one.Smile
Hopefully it will show I wasn't designed for all the fancy options; it will make it easier to buy a spare CPAP in the future.
08-05-2016 05:26 PM
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