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Old 09-27-2006
Rockter Rockter is offline
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Correct the word "commonly", for "always", and have a look at this article, with emphasis on the reference to laryngospasm. Some poor souls do not get water in the lungs, particularily in the early minutes...

http://en.wikipedia.org/wiki/Drowning

Check the section beginning....

Quote....

Unconsciousness

A continued lack of oxygen in the brain, hypoxia, will quickly render a victim unconscious usually around a blood partial pressure of oxygen of 25-30mmHg. An unconscious victim rescued with an airway still sealed due to laryngospasm stands a good chance of a full recovery. Artificial respiration is also much more effective without water in the lungs. At this point the victim stands a good chance of recovery if attended to within minutes. In most victims the laryngospasm relaxes some time after unconsciousness and water fills the lungs resulting in a wet drowning. Latent hypoxia is a special condition leading to unconsciousness where the partial pressure of oxygen in the lungs under pressure at the bottom of a deep free-dive is adequate to support consciousness but drops below the blackout threshold as the water pressure decreases on the ascent, usually close to the surface as the pressure approaches normal atmospheric pressure. A blackout on ascent like this is called a deep water blackout.

...Unquote.

You really must try to kickstart breathing the first moment you can try, and yiu have got to keep trying and trying. Everything hinges on that one.
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