Quote:
Originally Posted by trux
And what you experienced after you breath-up was a blackout (or a state close to it) due to brain hypoxia induced through hyperventilation (and accelerated by the pressure change) and not because of relaxation and low heart rate. When you hyperventilate (it means breathing (even slightly) faster or deeper than normally, lowering so the CO2 level in your blood), the body reacts to the low CO2 level by vasoconstriction of the carotids supplying the brain,
[?] and the higher blood acidity (due to the CO2 excess) [?]
causes stronger binding of oxygen to hemoglobin, which also means the oxygen cannot be easily released where needed (in brain in this case). So paradoxically, after hyperventilating, you can easily blackout due to brain hypoxia.
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Trux, is that right?
I thought: HV causes blood alkalinity, thus stronger O2-hemoglobin chemical bonding, thus reduced O2 flow to brain and resulting hypoxic dizziness.
Am I mistaken?
DDeden
