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How much do divers need to know about IPO and the factors that contribute to it. Why even at quite advanced recreational SCUBA is so little taught about WOB and the effects of F = ma (Newtons second law) on lung stress.
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It would take an extremely high work of breathing (e.g. trying to pull air from a second stage under water after exhausting the gas supply) for that alone to produce pulmonary oedema in a diver, in which case it would be referred to as negative pressure pulmonary oedema. How high a work of breathing are you referring to? If you're thinking of that from a poorly adjusted regulator or high gas density at extreme depths, the diver would likely experience CO2 toxicity before IPO.How much do divers need to know about IPO and the factors that contribute to it. Why even at quite advanced recreational SCUBA is so little taught about WOB and the effects of F = ma (Newtons second law) on lung stress.
Exactly. A friend's nephew died a few years ago from IPE. Mid-twenties. No comorbitities. Normal dive profile off Monterey (temperate). What could be learned/taught? Sh-t happens.Last I looked they weren't entirely clear on what causes IP[OE] in us couch potatoes, what are the physiological factors we need to be taught about other than "don't have high BP" (always a good advice) and "don't be a post-menopausal woman" (can't be helped)?
A lot has been learned about IPE. If your friend's nephew was young and healthy, unfortunately it's likely that he had a predisposition to it. There is a subset of the population in whom the pulmonary arteries do not dilate sufficiently in response to the influx of blood from immersion-related fluid shifts. This produces pulmonary hypertension which can lead to pulmonary edema. Cold water and increased work while in the water can exacerbate this.Exactly. A friend's nephew died a few years ago from IPE. Mid-twenties. No comorbitities. Normal dive profile off Monterey (temperate). What could be learned/taught? Sh-t happens.
In "a Maltese diving incident" a party of 4 divers went out on a recreational dive and two died of IPO/EExactly. A friend's nephew died a few years ago from IPE. Mid-twenties. No comorbitities. Normal dive profile off Monterey (temperate). What could be learned/taught? Sh-t happens.