Hi,
A quick check on wikipedia tells me that each exhalation contains approximately 5% less oxygen than you inhaled and 5% more CO2, by volume.
Air contains approx 13.6% oxygen and 0.03% CO2.
A quick calculation:
If we assume a volume of air of 100 units being exhaled and inhaled, that means after 5 exhalations, this air will be:
10.5 units oxygen and 0.038 units CO2.
That means that the original composition of the air has changed, but in absolute terms, the amount of extra CO2 has not replaced the oxygen. I wonder what has increased in order to fill the other approx 3 units?
I seem to remember Ray talking about Nitric Oxide being breathed out. Perhaps this could accumulate in the breathed air and start to cause problems?
This would be only after 5 breaths in and out, and I'm sure that I remember some people saying that they are bag breathing for at least a few minutes and multiple times per day.
After 25 breath cycles, there would be 3.8 units of oxygen and only 0.1 units of CO2, so there is now 10% of the original air taken up by other exhaled products.
Does anyone know what the other products would be that accumulate in this air?
Given this, how many breaths per session of bag breathing would be safe and how many times per day?
A quick check on wikipedia tells me that each exhalation contains approximately 5% less oxygen than you inhaled and 5% more CO2, by volume.
Air contains approx 13.6% oxygen and 0.03% CO2.
A quick calculation:
If we assume a volume of air of 100 units being exhaled and inhaled, that means after 5 exhalations, this air will be:
10.5 units oxygen and 0.038 units CO2.
That means that the original composition of the air has changed, but in absolute terms, the amount of extra CO2 has not replaced the oxygen. I wonder what has increased in order to fill the other approx 3 units?
I seem to remember Ray talking about Nitric Oxide being breathed out. Perhaps this could accumulate in the breathed air and start to cause problems?
This would be only after 5 breaths in and out, and I'm sure that I remember some people saying that they are bag breathing for at least a few minutes and multiple times per day.
After 25 breath cycles, there would be 3.8 units of oxygen and only 0.1 units of CO2, so there is now 10% of the original air taken up by other exhaled products.
Does anyone know what the other products would be that accumulate in this air?
Given this, how many breaths per session of bag breathing would be safe and how many times per day?