Leak Rate Charts for ResMed Masks?

Anybody know where I can find the leak rate charts for these ResMed masks?

ULTRA (Ultra Mirage Nasal Mask)
MIR FULL (Mirage Full Face Mask)
ACTIVA (Mirage Activa Nasal Mask)
SWIFT (Mirage Swift Nasal Pillows System)
MIRAGE (Mirage Nasal Mask)
STANDARD (Mirage Vista Nasal Mask)

The ResMed S8 lists these as choices and I'm trying to learn which one is the closest match for the Liberty.

Steve-

When using a non-Resmed mask w/a Resmed xPAP, use the Standard mask selection. The Standard mask selection automatically deducts 0.4 L/s (24 L/M) for the Reported leak rate so you add 24 L/M to your reported Leak rate and compare that to the allowed vent rate at your set pressure for your non-Resmed mask. Your mask's literature will have a table chart of the allowed vent rates at various pressure settings.

Set it for Mir Full. The Liberty's full name is "Mirage Liberty full face mask".

That's the mask I have been using (only a week so far) and trying to work the kinks out of. Right now my issue is after about 3 hours one of the nasal pillows will slip partially out and leak. It usually doesn't blow on my face and doesn't make much noise so I don't always wake up because of it. I'm thinking of trying the medium instead of the large pillows.

I'm trying to decide how much I should fiddle with this mask before requesting a different one from the DME.

I didn't realize that the Liberty is a Resmed mask. Just look thru the literature that came w/your Liberty mask and it will tell you what Mask Selection to use.

StevenJ wrote:. . . The ResMed S8 lists . . . trying to learn which one is the closest match for the Liberty. . .

http://www.resmed.com/en-us/assets/docu ... er_eng.pdf

StevenJ wrote:Anybody know where I can find the leak rate charts for these ResMed masks?

ULTRA (Ultra Mirage Nasal Mask)
MIR FULL (Mirage Full Face Mask)
ACTIVA (Mirage Activa Nasal Mask)
SWIFT (Mirage Swift Nasal Pillows System)
MIRAGE (Mirage Nasal Mask)
STANDARD (Mirage Vista Nasal Mask)

The ResMed S8 lists these as choices and I'm trying to learn which one is the closest match for the Liberty.

Steve-

Ultra = 18.3 L/m @ 4 cm H2O to 53.1 L/m @ 20 cm H2O (tell me your treatment pressure and I can give the ResMed number corresponding to that pressure for each mask. At 12 cm the rate is 38.4 L/m
MIR FULL = 22.1 @ 4, 40.5 @ 12 and 54.3 @ 20
ACTIVA = 19.2 @ 4, 34.4 @ 12 and 45.4 @ 20
SWIFT = 20.3 @ 4, 36.7 @ 12 and 48.6 @ 20
MIRAGE (Micro and Activa) = 19.2 @ 4, 34.4 @ 12 and 45.4 @ 20
STANDARD = the Mirage Vista Nasal Mask is not listed in Clinical Manual

The Mirage Liberty has the same rate as the Mirage Quattro Full Face Mask and the Ultra Mirage Full Face Mask

Thanks, all. Mirage Full it is. I scanned through the literature but missed the part telling compatibility.

JNK, thinks for the link. Perfect.

You should ask your respiratory therapist. I have tried almost every Resmed mask and one leaks just as well as another. They all leak.

skt wrote:You should ask your respiratory therapist. I have tried almost every Resmed mask and one leaks just as well as another. They all leak.

Do you have OSA...
Perhaps you have some other bias... it's OK to have them but you really should share your biases so we understand where you are coming from...
If you are an RT... we can always use helpful information... join up

Thanks for the info but as it is stated here... it won't have any value.

Nord

This link works better

http://www.resmed.com/assets/documents/ ... sa_eng.pdf

My mask doesn't leak. Of course the crazy glue that I used to get that happening means I have to wear the mask all day as well as all night. Sorta like the Star Wars commercials.

I had no idea they actually published charts for these figures! My goodness, how on Earth do they figure these leakage figures out.... everyone's face and circumstances are different. This is totally bizarre.

If you were to ask me, honestly, I would have to say that each individual is going to get different leak rates from their mask(s). I found a couple of great masks on my 3rd and 4th attempt/trial and now I am thinking that I may play around with different sizes (but not at ResMed prices). And there are a couple of nasal pillows that I would like to try out and I see that they now come with three or four different size inserts (yay). The mask is the last piece of the puzzle for me. I have what I believe to be the perfect blower for me and I use a humidifier with it but with the heat turned off. I think that my leakage is lower with the heated air turned ON but I hate hot air blowing into me after three weeks on life support. Don't want to be reminded of that. On the other hand I also hate cold air blowing into me and dry air blowing into me. It's like the three little bears... gotta be just right so I am going with the S9 with H5i humidifier and climate control hose so that when I travel or when we turn the heat down at night or the temp suddenly drops during the summer I don't have to deal with (a) rainout, nor (b) cold air blowing into me.

Off on a tangent as usual. Just remember that mask make and model as well as size play a big role in the leakage. And keep in mind that your personal comfort is important for a good night of sleep - my rehab centre actually went through the do's and dont's of getting a good night of sleep for "at risk" patients. Don't eat or drink for some time before bed unless you are diabetic (I am) and if you are diabetic make certain the snack is SMALL and not gaseous or gas creating (especially if you don't sleep alone unless you are prepared to sleep on the couch). Excercise before bedtime is out. A wind-down period is a must. Keep the room dark as midnight and that includes the early morning when the sun comes up unless you want to rise with the sun. No noises at night so forget setting the dryer or dishwasher to come on at 4 a.m. to save power dollars. And if you have a dog make sure that it doesn't dream and yip at 4 a.m. If you have kids, especially university kids, make sure they don't study until 2 a.m. and then hit the bathroom and flush the toilet. If you want peace of mind put in an alarm system with perimeter and interior monitoring. Never go to bed anxious nor with an argument brewing. And so on. Visit the washroom before you retire as a matter of habit; even if you don't have to get up at night to relieve yourself or evacuate your intestines will be active and that's not a good thing. The list is an arm's length long with mask performance right up at the top of the list because that is something that you CAN control with some effort and time. It may take a year or more and a bazillion dollars to experiment, but you WIL find the ideal mask for your face and sleeping habits.

Good luck to you. Don't giv up on finding that perfect mask. I'd like to suggest that we hold a survery on the board with two columns; what type of mask do you use and are you happy with it (is it your final choice).

One would think that this type of survery would be much better than the mask versus mask surveys that we have been doing; and what we would wind up with is a chart pointing to what might be the ideal mask for most folks. Comments?

The published rates are vent rates, not leak rates. It's the flow through the mask's vent(s) at various pressures.
Leak is the flow above and beyond what the mask is designed to vent and it, of course, varies from person to person.

jdm2857 wrote:The published rates are vent rates, not leak rates. It's the flow through the mask's vent(s) at various pressures.
Leak is the flow above and beyond what the mask is designed to vent and it, of course, varies from person to person.

Thanks for the clarification jdm; Those mask vents are pesky little things; I generally just fix a batch of white epoxy and fill them in when I get the mask.

Seriously folks, while we are on the subject; those vent holes are necessary especially for venting CO2 I believe. You want to make sure that you aren't sleeping on them or have them obstructed in any way. And for heaven's sake (and if you want to sleep) DO NOT blow them at your partner.

Lip/mouth breather? Crazy glue works for that as well (just kidding). That's my wife's job. She wakes up and I once caught her gently squeezing my lips together. I've reached the point where she no longer squeezes my lips together; she just keeps a banana by her bedside and stuffs that in my mouth if I start mouth breathing with my nosebag on.

Is it fun yet?

You got it -- without the vents, you'd keep rebreathing the same air over and over. Exhaling it into the hose and then drawing it back into your lungs. With each breath the oxygen level would drop and the carbon dioxide level would rise.

Not good.

jdm2857 wrote:You got it -- without the vents, you'd keep rebreathing the same air over and over. Exhaling it into the hose and then drawing it back into your lungs. With each breath the oxygen level would drop and the carbon dioxide level would rise.

Not good.

Unless you're a tree, of course.
M