hose diameter

I got a sleepnet iq mask and it made me wonder - it comes with a hose that is quite a bit smaller than standard.... Wouldn't this keep you from getting the proper amount of air?

Do you mean the diameter is smaller? A smaller diameter would result in a lower volume delivered to the mask at a given pressure. I know the Resmed S9 series has you set which hose you are using, offering choices of slimline, standard, or climateline.

I would use a "standard" size hose. They are cheap, and I wouldn't risk the potential for improper therapy or back-pressure on the machine. Sheriff

That would be my concern, but this is the standard Sleepnet Iq mask. Strange

You are talking about the short hose part of the mask assembly???? The part that the 6 ft hose attaches to??
That amount of short distance with smaller diameter hose isn't going to be enough to impact therapy pressure greatly and the sensors in the machine will try to keep pressure stable just like they would if leaks were involved..

Every one of my nasal pillow mask models I have tried all have different sizes of short hose assembly and all are smaller than 15 mm slimline 6 ft. It's pretty common for any short hoses to have a smaller diameter and pretty much a non issue.

If you are talking about the short hose that is routed upwards in this image then there is nothing to be concerned about.
https://www.cpap.com/productpage/sleepn ... PAodTHUARA

That's the one - I just don't understand how a given volume of air can get through that smaller size.

Pugsy wrote:You are talking about the short hose part of the mask assembly???? The part that the 6 ft hose attaches to??
That amount of short distance with smaller diameter hose isn't going to be enough to impact therapy pressure greatly and the sensors in the machine will try to keep pressure stable just like they would if leaks were involved..

Every one of my nasal pillow mask models I have tried all have different sizes of short hose assembly and all are smaller than 15 mm slimline 6 ft. It's pretty common for any short hoses to have a smaller diameter and pretty much a non issue.

If you are talking about the short hose that is routed upwards in this image then there is nothing to be concerned about.
https://www.cpap.com/productpage/sleepn ... PAodTHUARA

thanks pugsy! i was wondering what that part was called! is it possible to get a replacement short hose then? i got a second hose to alternate with my current one in between weekly cleanings but i'd like to get a short hose too. thanks.

It's a "bottleneck" sort of thing. The airflow is sufficiently small relative to the hose size that even the smaller hose diameter doesn't restrict the airflow that much. To give you a feel for this, take a hose, disconnect both ends, put it in your mouth, and inhale and feel the resistance. Also, look at the size of the vent hole in your mask and realize that all the air the machine blows goes out through those holes.

The smaller size does affect the airflow a little. I believe that it has a larger effect on the machine being able to do things like sense apneas or provide exhale relief/EPR/Flex or bilevel. Telling the machine the hose size lets it compensate.

sleepnasta wrote: is it possible to get a replacement short hose then? i got a second hose to alternate with my current one in between weekly cleanings but i'd like to get a short hose too. thanks.

For your Swift FX nasal pillow mask? Yeah, those are easy to find.
Short hose assembly is what they are called. Listed under replacement parts but pretty pricey ($75). Might as well get the whole package. Though if you shop smart sometimes you can find a steal of a deal on them on EBay.
They will last forever with common sense care though.

I just started using the wisp and it has this short skinny hose. Should I perhaps change my setting to nasal pillows since nasal pillowb masks usually have these. It might compensate somehow?

The size difference for a short length of tubing is not significant enough to make you change the mask setting.
Think about the tubes on the Cpap-Pro "no-mask". A set volume of air can pass through a smaller diameter tube
because the velocity can increase. When the diameter is larger, the velocity lessens; but the amount of air is the same,
and also the pressure inside of you, where it counts.
(Just don't ask me how a flow restricter plate in a hotel shower works;
I know someone who travels with power tools, just so he can get a decent shower.)

chunkyfrog wrote:(Just don't ask me how a flow restricter plate in a hotel shower works;
I know someone who travels with power tools, just so he can get a decent shower.)

Thus providing all who follow after with a decent shower

chunkyfrog wrote: (Just don't ask me how a flow restricter plate in a hotel shower works;
I know someone who travels with power tools, just so he can get a decent shower.)

Power tools for a shower? Was this his work?

Is that a shower or an execution chamber?? Either way, I wouldn't get in there.

Funny peoples. But seriously, why is that setting there for? There's Pillow, nasal, full & ultra . Oh what does it all mean?