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

Rebreathing question
#11
RE: Rebreathing question
A healthy person exhales 6 to 8 liters per minute and the mask(s) vent out 19 liters per minute at a pressure of 3 cmH2O. This data corresponds to both a nasal and full face mask from Resmed. According to this data and if one does the math, one cannot physically rebreathe their own air with a working mask and even with the new QuietAir elbow because exhaled air is getting expelled at more than twice the rate even with the lowest pressure of 3 cmH2O. 

If you cover the exhalation ports on your mask, you're changing the charts and there's no way of determining how much you're rebreathing. This is the case with or without a mask. If you put a bag over your head while you breathe, you'll suffocate.


Attached Files Thumbnail(s)
       
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  [CPAP] Rebreathing Issues Geri Monsen 19 2,091 09-29-2021, 08:19 AM
Last Post: Sleepster
  Best Nasal Pillow for Leaks and Proper Exhalation / Rebreathing at Low Pressures hoselife 6 1,330 03-01-2021, 08:58 AM
Last Post: Crimson Nape
  Rebreathing / acceptable flow Boodmaster 15 2,321 07-15-2020, 09:32 AM
Last Post: Boodmaster
  Enhanced Expiratory Rebreathing Space for Dreamwear or N30i drmaestro 4 1,075 06-12-2020, 03:46 PM
Last Post: Sleeprider
Exclaimation [Health] Interpreting sleep study results, EERS enhanced expiratory rebreathing space JoeyWallaby 221 21,599 12-29-2019, 08:12 AM
Last Post: JoeyWallaby
  [Equipment] Fabrication of an Enhanced Expiratory Rebreathing Space (EERS) sherwoga 73 7,556 11-29-2019, 07:53 PM
Last Post: Gideon
  [Equipment] Rebreathing causing Hypercapnia (CO2 – Carbon Dioxide Poisoning) HULK 64 53,426 03-27-2019, 12:06 AM
Last Post: mdmarmd


New Posts   Today's Posts


About Apnea Board

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