02-02-2021, 02:46 PM
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.
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.