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The Physical Approach
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accident achieved activity air embolism alpha rhythm anoxia artificial respiration ascent asphyxia atmospheric pressure blood breathing apparatus breathing set bubble burst lung canister carbon dioxide cause changes chest closed circuit cylinders dangerous dead space decompression sickness decompression tables deep diving demand valve density drowning effect efficiency entering the water environment equivalent depth excess expired air face mask flow rate FREE DIVE gases give goggles helium helmet hyperventilation important increase inhaled limit litres litres per minute M.R.C. RNPRC maximum breathing capacity method mixture mm.Hg mouth mouth-piece nitrogen narcosis normal occur oxygen poisoning partial pressure Physiol physiological possible practice pressure chamber problem produce pulmonary pure oxygen reduced Report U.P.S. rescue resistance respiratory system result resuscitation safety Schnorkel submarine escape suit supply surface symptoms technique tidal volume tion tissues treatment tube unconsciousness underwater medicine underwater swimmer underwater swimming usually ventilation whilst