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Acute onset of breathing problems caused by fluid accumulation in lung extravascular spaces induced by immersion, usually in cold water, often with intense physical exertion. Symptoms reported developed during physical activity and usually include dyspnoea/shortness of breath and a cough, often haemoptysis, occasionally chest tightness, chest ...
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.
The study involved 200 aircrew members, and identified a pattern of acute and chronic symptoms among affected aircrew, including headaches, dizziness, breathing problems, and vision problems. These symptoms can have a significant impact on the health and well-being of aircrew, potentially affecting their ability to perform their duties safely ...
Deep, non-localised pain not affected by movement suggests bone medulla involvement, with ischaemia due to blood vessel blockage and swelling inside the bone, which is mechanistically associated with osteonecrosis, and therefore it has been strongly recommended that these symptoms are treated with hyperbaric oxygen.
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Jet boats (including PWCs) generate that thrust with a moveable nozzle connected to a jet pump; propeller boats generate thrust through a downward-placed, exposed propeller. The fact that the propeller is placed downward in the water and is exposed means that even when it is not generating thrust that some amount of steering effect is possible.
30–50 100–165 Delayed response to visual and auditory stimuli; Reasoning and immediate memory affected more than motor coordination; Calculation errors and wrong choices; Idea fixation; Overconfidence and sense of well-being; Laughter and loquacity which may be overcome by self-control; Anxiety (common in cold murky water) 6–8 50–70 165 ...
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