Quote: (Originally Posted by
jkaterenchuk)

. On the other side of the envelope if your PO2 had dropped to dangerously low levels and you were on the edge of Hypoxia you may not have the 3 or 4 breaths left to pull O2 from the exhale side, through the loop to your lips before you pass out.
Regardless if we are talking about O2 injection as a reaction to Hypoxia or DIL Flush to combat Hyperoxia. I am wondering if anyone has done a mathematical reality check by looking at the loop volumes, lung volumes, gas absorption and blood circulation at minimum loop to determine the dwell time seen by the brain from point of recognition of the problem until physiological change would be evident?
My University Biomechanical Engineering classes were far to long ago for me to remember any of the specifics to take a cut at it myself. Just looking for a rough estimate. Are we talking <1 sec, a couple seconds or > 5 seconds?
Would be interested in how the time changes based upon inhale or exhale manual add locations?
John