Wunce I coodn't evin spel eroplain,,now I fly wun regads JR ----- Original Message ----- From: "Christopher Mc Donnell" <[EMAIL PROTECTED]> To: "Discussion of issues relating to Soaring in Australia." <[email protected]> Sent: Friday, April 07, 2006 12:30 PM Subject: Re: [Aus-soaring] Hypoxia, Hyperventilation, breathing
> "Hypo (oxia) is difficult to say, hypoxia is much easier to say!" > > Thought that might be so. > > A little bit like getting people to say "agoraphobia" instead of > "agraphobia". Even those who suffer from it. > > Chris McDonnell > > ----- Original Message ----- > From: "Texler, Michael" <[EMAIL PROTECTED]> > To: "Discussion of issues relating to Soaring in Australia." > <[email protected]> > Sent: Friday, April 07, 2006 8:42 AM > Subject: [Aus-soaring] Hypoxia, Hyperventilation, breathing > > > > Oxygen = Oxy (acid or sharp) and gen (forming or creating, as in genesis) > > oxygen is literal "acid forming" > > > > Hypo (oxia) is difficult to say, hypoxia is much easier to say! > > > > You can hyperventilate and still be profoundly hypoxic if you have bung > > lungs (or circulation to the lungs), the most dramatic example caused by > > pulmonary embolus, whereby a blood clot (most likely from the legs in > > association with "deep vein thrombosis" or "DVT") becomes lodged in the > > main artery from the heart to the lungs, hence no blood circulates through > > the lungs, hence very little oxygen in the blood (you are hypoxic). The > > unfortunate patient hyperventilates in a vain attempt to increase the > > blood oxygen level (so much so it is called "air hunger"). I have seen it > > happen, it is not a pretty sight. > > > > Also if you hyperventilate in a low oxygen atmosphere (i.e. at altitude) > > you will be hypoxic as well. > > > > Under normal circumstances (i.e. at sea level standard temperature and > > pressure, with healthy lungs) adequate oxygenation is easy to maintain, > > and oxygen levels don't drop below a point that makes us want to > > hyperventilate (we were designed that way). What surprises most people is > > that the stronger drive to make us breathe is the accumulation of carbon > > dioxide in our blood (as a by product of metabolism, the combustion of > > foodstuffs in our cells). Just think of that feeling you get when you hold > > your breath, there is an increasing desire to breathe, this is caused by > > the buildup of carbon dioxide in your blood stream, moreso than the > > reduction in oxygen levels. So we breathe to blow off the carbon dioxide > > produced by our bodies as well as take in oxygen. > > > > I am a pathologist (and in a previous life worked in surgery and done > > stints in anaesthesia), so I have relied upon my knowledge of respiratory > > physiology from these experiences. I know that there are anaesthetists > > lurking out there, perhaps they can comment. > > > > Michael Texler > > > > > > _______________________________________________ > > Aus-soaring mailing list > > [email protected] > > To check or change subscription details, visit: > > http://lists.internode.on.net/mailman/listinfo/aus-soaring > > > > > _______________________________________________ > Aus-soaring mailing list > [email protected] > To check or change subscription details, visit: > http://lists.internode.on.net/mailman/listinfo/aus-soaring _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring
