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[Equipment] Resmed F10 mask "jumps" on exhale
I am a new CPAP user for about 6 weeks. While I am figuring out settings for ResMed Air Sense 10 CPAP (basic) that work for me, I am having problems adjusting to my mask(s). I went home with a ResMed Mirage FX nasal mask but had problems with immediate congestion from the pressure of the mask on my sinuses. I auditioned a few ResMed full face masks settling on an AirFit F10 which feels comfortable across my nose and noticiably reduced congestion. Breathing has been much easier. However, I am an active sleeper, usually on my right side but I also sleep prone while transitioning from one side to the other. In prone position, I have discovered the F10 mask "jumps" on my face (feels like it is is momentarily pushed onto my face creating a light jerk). This occurs in the transition between an inhale and exhale, and often enough that I cannot fall asleep prone. Is this a characteristic of this mask, of full face masks in general, or mostly related to my breathing patterns? Any advice on how to eliminate this jumpy characteristic?
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Hi umpire318,
WELCOME! to the forum.!
Hang in there for answers to your question and good luck to you with your CPAP therapy.
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Welcome! You might be feeling the pressure reduction from when EPR (Exhale Pressure Relief) kicks in. You can get the clinicians manual from the "CPAP Setup Manuals" link at the top of this page. If you have EPR enabled, try reducing it to see if this helps. If it does not help, the problem is somewhere else.
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I would wager it's the EPR. The reduction in pressure on exhale takes some tension off the mask seal. It's normal; but, can be minimized.
My S9 is a bilevel with a 5 cm-water difference between IPAP and EPAP. My Mirage Quattro can jump as described.

Two things help lessen that tendency: 1) I wear the mask tight.
2) Rise time adjustment which may not be available on the ResMed AirSense 10 CPAP; On mine, there is a setting called "easybreathe." When ON, the rise and fall times to/from IPAP to/from EPAP are like the exponential rise fall of an RC circuit.

Summary: Adjust mask strap tension and EPR for best result.

Admin Note:
JustMongo passed away in August 2017
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~ Rest in Peace ~
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My thanks to JustMongo and Chill to focus on the EPR setting. My EPR setting was two. When I reduced it to 1, I found a noticeable improvement. Mask only occasionally "jumps", and when it does, seems to relate to how fast I am breathing. Now experimenting between maintaining the one setting and turning off EPR entirely. After a week back and forth, both settings seem pretty similar in effect.
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I have been using the (AirFit P10) nasal pillows for a month now with no issues, however I recently had a cold and was very congested. I switched my nasal pillows over to the AirFit F20 full face mask and had trouble breathing with it on. The amount of air that is forced into it from my machine (AirSense Auto-Set 10) seems to be so much that it makes exhaling very difficult. Is this normal? It just seems like I am getting blown away. I don't get that sensation with my nasal pillows on. Just curious.
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