3 ms·
Average human: breathes approximately 7 liters per minute of air, give or take @ 21% oxygen. Maybe 22L of oxygen under normal respiratory demand. More if under
by aspectmin 4y ago
Average human: breathes approximately 7 liters per minute of air, give or take @ 21% oxygen. Maybe 22L of oxygen under normal respiratory demand. More if under stress of course.
At 100% oxygen that’s 105L of O2? So guesstimating almost 100% O2?
Source: am paramedic, not doctor or respiratory therapist.
- kzrdude 4y agoBreathed air is diluted right, to some lower % of oxygen content, but it needs to be in the calculation.
- urban_winter 4y agoExhaled air is about 17% oxygen, 4% carbon dioxide. So, as previous poster noted, scrubbing the CO2 is your first priority. You can't breathe air with greater than about 4% CO2 indefinitely. Oxygen levels lower than 15% are also bad. Diving rebreathers are an interesting implementation of these rules in that they are lethal if you get it wrong.