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Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Thu Apr 30, 2015 3:03 pm
by palerider
Tsparky wrote: There is more air coming out of the FFM port ALL the time and less out of the NP all the time with almost no air out the NP port when inhaling. I'm trying to understand the physics of CPAP so no explanation would be too technical for me... .
what you're describing that you believe is not valid scientifically.
you've not said what machine you use, but if it's a respironics, look at the top leak line.
that's how much air is coming out of the vent ports, and leaking around the mask, in total.
compare the stated vent rates of the two masks...
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Thu Apr 30, 2015 3:21 pm
by Tsparky
palerider wrote:Tsparky wrote: There is more air coming out of the FFM port ALL the time and less out of the NP all the time with almost no air out the NP port when inhaling. I'm trying to understand the physics of CPAP so no explanation would be too technical for me... .
what you're describing that you believe is not valid scientifically.
you've not said what machine you use, but if it's a respironics, look at the top leak line.
that's how much air is coming out of the vent ports, and leaking around the mask, in total.
compare the stated vent rates of the two masks...
initial post stated: RESMED Airsense 10 Autoset with Fisher & Paykel Simplus Vs. RESMED P10 Nasal Pillows
also stated no mask leaks...
Can Resmed or SleepyHead read the data you reference?
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Thu Apr 30, 2015 8:46 pm
by palerider
Tsparky wrote:initial post stated: RESMED Airsense 10 Autoset with Fisher & Paykel Simplus Vs. RESMED P10 Nasal Pillows
also stated no mask leaks...
Can Resmed or SleepyHead read the data you reference?
cbb to go back and look through all your posting history to find out if maybe you mentioned something about what you're using... that's why there's an equipment section in the profile that people use.
resmed machines report excess leak, so, if you're not seeing leaks, then you're not losing more air than the mask is designed for.
check the posted vent rates in the manuals.
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 3:22 am
by Tsparky
Vent rates not listed in either manual...
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 5:46 am
by Krelvin
Tsparky wrote:Vent rates not listed in either manual...
Manual for Fisher & Paykel Simplus
http://www.fphcare.com/CMSPages/GetFile ... 0282c673f3
Manual for Airfit 10 Pillows
http://www.resmed.com/us/dam/documents/ ... er_eng.pdf
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 10:51 am
by palerider
Tsparky wrote:Vent rates not listed in either manual...
vent rates are listed (as krelvin pointed out) in pretty much all, if not *all* cpap manuals as well as resistance and such. though, I admit, some mfgrs do a better job of it than others.
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 12:10 pm
by Tsparky
RESMED Airsense 10 Autoset:
Fisher & Paykel Simplus 40 L/m at 14 CM
RESMED P10 Nasal Pillows 40L/m at 14 CM
Both FFM and NP are exactly the same. I will have to ask my RT, N and Dr for their expert opinion. Feels like a LOT more pressure with the NP.
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 12:16 pm
by palerider
Tsparky wrote:RESMED Airsense 10 Autoset:
Fisher & Paykel Simplus 40 L/m at 14 CM
RESMED P10 Nasal Pillows 40L/m at 14 CM
Both FFM and NP are exactly the same. I will have to ask my RT, N and Dr for their expert opinion. Feels like a LOT more pressure with the NP.
and yet, it isn't.
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 12:21 pm
by Tsparky
palerider wrote:Tsparky wrote:RESMED Airsense 10 Autoset:
Fisher & Paykel Simplus 40 L/m at 14 CM
RESMED P10 Nasal Pillows 40L/m at 14 CM
Both FFM and NP are exactly the same. I will have to ask my RT, N and Dr for their expert opinion. Feels like a LOT more pressure with the NP.
and yet, it isn't.
Please explain..
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 12:58 pm
by palerider
Tsparky wrote:palerider wrote:Tsparky wrote:RESMED Airsense 10 Autoset:
Fisher & Paykel Simplus 40 L/m at 14 CM
RESMED P10 Nasal Pillows 40L/m at 14 CM
Both FFM and NP are exactly the same. I will have to ask my RT, N and Dr for their expert opinion. Feels like a LOT more pressure with the NP.
and yet, it isn't.
Please explain..
tell ya what, get a oxygen adapter, and some tubing, and then stick the tube down in a tall glass of water, and measure the pressure for yourself.
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 2:17 pm
by Tsparky
Now that's a rude and unwelcome response. Please try to be civil...
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 3:41 pm
by palerider
Tsparky wrote:Now that's a rude and unwelcome response. Please try to be civil...
telling you a way that you can *see* what pressures are being applied is rude and unwelcome?
ok, was you wish.
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 3:45 pm
by chunkyfrog
You forgot the part about taping a ruler to the tubing.
It really does work.
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 4:01 pm
by ChicagoGranny
Tsparky wrote:Now that's a rude and unwelcome response. Please try to be civil...
But you said,
Tsparky wrote:no explanation would be too technical for me
PailRider was just delivering his version of "technical".
Re: FFM Vs. Nose Pillows - Is there a pressure difference?
Posted: Fri May 01, 2015 4:03 pm
by ChicagoGranny
PailRider wrote:
I'll bet you a dollar that the reason that it feels like there's a LOT more pressure with the pillows is that when you're wearing pillows, you have more pressure on the inside of your nose than you do on the outside, effectively blowing it up like a balloon.
when you're wearing a FFM, you've got the same pressure on the inside, and outside of your nose, so the feeling is quite different.
I never experimented much with other masks, so your comments made me think the ballooning is one reason I like my Hybrid so much.