Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

Does mask SIZE make a difference (regarding pressure)?
#1
Does mask SIZE make a difference (regarding pressure)?
For example, would switching to a larger mask mean that the air gets less concentrated and therefore the pressure should be increased to accommodate? 

Y or N
Post Reply Post Reply



Donate to Apnea Board  
#2
RE: Does mask SIZE make a difference (regarding pressure)?
N. All you need to do is to make sure that you've set the mask type correctly in the machine's settings: full-face, nasal, or nasal pillows/cushion. That's Resmed. On the Philips machines, it's done with the "resistance" settings, X1 through X5 or off (X0).
Post Reply Post Reply
#3
RE: Does mask SIZE make a difference (regarding pressure)?
Agreed with FD on this. The CPAP (mainstream branded items) has that compensation calculated via that mask setting. And if you mean changing cushion sizes, IMO there isn't enough volume change to be concerned about.
Dave

I'm not a doctor in real or fictional life. My posts include opinions based upon user experience regarding CPAP therapy and should not be considered medically professional direction or advice.


Wiki Info for Beginners
OSCAR Chart Organization
Mask Primer
Post Reply Post Reply
#4
RE: Does mask SIZE make a difference (regarding pressure)?
I've found even when setting the correct type of mask on the machine, that a increase in pressure of 1cm or so is required when going from a pillow mask to a full face mask.
Download SleepyHead
Organize your Sleepyhead Charts
Posting Charts
Beginner's Guide to SleepyHead
Mask Primer
5
Advisory Members serve as an "Advisory Committee" to help shape Apnea Board's rules & policies.

Membership in the Advisory Members group does not imply medical expertise or qualification for advising Sleep Apnea patients concerning their treatment.



Post Reply Post Reply



Donate to Apnea Board  
#5
RE: Does mask SIZE make a difference (regarding pressure)?
Safe to say then "It depends on the user" is an answer to consider?

Coffee
Dave

I'm not a doctor in real or fictional life. My posts include opinions based upon user experience regarding CPAP therapy and should not be considered medically professional direction or advice.


Wiki Info for Beginners
OSCAR Chart Organization
Mask Primer
Post Reply Post Reply
#6
RE: Does mask SIZE make a difference (regarding pressure)?
My experience going from Resmed F10 to F&P Simplus (both full face) is that the Simplus required on average 1.5cm higher pressures to get the same consistent results. The Simplus has a substantially bigger volume.
DeepBreathing
Apnea Board Moderator
www.ApneaBoard.com


Bed

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
Post Reply Post Reply
#7
RE: Does mask SIZE make a difference (regarding pressure)?
??? Your lung volume doesn't change when you use a different mask.
Post Reply Post Reply



Donate to Apnea Board  
#8
RE: Does mask SIZE make a difference (regarding pressure)?
(01-13-2019, 11:01 AM)Fats Drywaller Wrote: ???  Your lung volume doesn't change when you use a different mask.

Yeah, but the air has to fill both your lungs and the volume of the mask. A larger mask should, in theory, give the air more room to spread out, thus diluting it's concentrated power. 

On the other hand, the machine is supposed to be able to compensate for leaks, with reason,  (I think) and perhaps understands how to keep the pressure consistent based on the pressure it senses pushing back. 

All I know is that I seem to be having better numbers with the medium, but it's too early to tell. Leak rate was the same with both masks.
Post Reply Post Reply
#9
RE: Does mask SIZE make a difference (regarding pressure)?
(01-13-2019, 11:14 AM)Broomstick Wrote: Leak rate was the same with both masks.

Are you sure?  Keep in mind that larger masks would need a larger "Intended" leak to purge the exhaled Oxygen Carbon Dioxide (CO2).

to the OP, it is not at all uncommon to need to tweak settings when changing the delivery system, not always, but not uncommon.  I believe that a change in the volume of the system is the largest factor.

Fred
Fred Bonjour - Project Manager and Lead Tester for OSCAR - Open Source CPAP Analysis Reporter 
OSCAR

Download OSCAR
New to Apnea? Helpful tips to ensure success
Soft Cervical Collar
Mask Primer
Dealing with a DME
Organize Charts
Attaching Charts

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
Post Reply Post Reply
#10
RE: Does mask SIZE make a difference (regarding pressure)?
(01-13-2019, 10:43 AM)DeepBreathing Wrote: My experience going from Resmed F10 to F&P Simplus (both full face) is that the Simplus required on average 1.5cm higher pressures to get the same consistent results. The Simplus has a substantially bigger volume.

This is what I'm thinking. I just had a much higher AHI than average today and the only variable is this larger mask. It's too early to tell, but this is something I've been thinking about for a while. I will report back on my experiment after a few days.
Post Reply Post Reply



Donate to Apnea Board  


Possibly Related Threads...
Thread Author Replies Views Last Post
  How to make the best of it? Schlafer 22 530 10 hours ago
Last Post: Schlafer
  Help with mask, Definition of EPAP/IPAP and Mask Pressure wesozzzz 1 67 11-15-2019, 07:57 PM
Last Post: Sleepster
  Trying to make sense out of a Flow Rate change RayBee 13 319 10-30-2019, 08:41 PM
Last Post: SarcasticDave94
Thumbsup [Admin Note] Please update your Profile [machine, mask, pressure] SuperSleeper 3 1,785 10-15-2019, 02:23 PM
Last Post: SuperSleeper
  Pressure Settings using Nasal and Full-face mask Wcwilson 9 416 10-08-2019, 04:21 PM
Last Post: Wcwilson
  best high pressure mask for no leaks dragoneye 22 1,369 09-18-2019, 01:41 PM
Last Post: DaveL
Question ASV Mode vs ASVAuto Mode - What's the Difference? RayBee 6 285 09-03-2019, 11:50 PM
Last Post: SarcasticDave94


New Posts   Today's Posts






About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.