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Conditions considered temporary reasons to suspend diving activities: Pregnancy—It is unlikely that literature research can establish the effect of scuba diving on the unborn human fetus as there is insufficient data, and women tend to comply with the diving industry recommendation not to dive while pregnant. [50]
Diving disorders are medical conditions specifically arising from underwater diving. The signs and symptoms of these may present during a dive, on surfacing, or up to several hours after a dive. The principal conditions are decompression illness (which covers decompression sickness and arterial gas embolism ), nitrogen narcosis , high pressure ...
Divers Alert Network 2014 data shows there are 3.174 million recreational scuba divers in America, of which 2.351 million dive 1 to 7 times per year and 823,000 dive 8 or more times per year. It is reasonable to say that the average would be in the neighbourhood of 5 dives per year.
Narcosis results from breathing gases under elevated pressure, and may be classified by the principal gas involved. The noble gases, except helium and probably neon, [2] as well as nitrogen, oxygen and hydrogen cause a decrement in mental function, but their effect on psychomotor function (processes affecting the coordination of sensory or cognitive processes and motor activity) varies widely.
Physical conditions of the water or other diving medium influence the safety and practicability of a dive and can affect the choice of equipment used. These include motion of the medium, visibility and illumination, temperature, and pressure. These conditions are affected by weather, season and climate. [30] [31]
Two Mile (which itself stretches for nearly 1.8km) features the most diving locations (around 30) and the shallowest depths, effectively debunking the myth that when it comes to diving, deeper is ...
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A 1989 study estimated that 37 percent of deaths that occurred during recreational scuba diving in Australia and New Zealand in the 1980s involved salt water aspiration syndrome. The study hypothesized—based on reports of the victim's symptoms and an analysis of their equipment—that the syndrome acted as an intermediate factor, exacerbating ...