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氧可能会产生加速度导致的肺不张。现行的政策为避免+Gz暴露引起的肺不张和保持氧气供应,在低高度飞行中供给美国空军飞行员的氧浓度不应超过60％。航空勤务通讯中心空中标准61/22A规定在20000 ft(6096m)以下,飞行人员供氧浓度不得超过75％。随着机上制氧系统的引入,已不存在储存氧气的必要。在所有高度提供高浓度氧:①将有助于飞行员飞行时体液脱氮,减低减压病发生的危险;②在高G导致通气/灌流比例失衡的情况下,将提高动脉血氧浓度;③由于一
Oxygen may produce acceleration due to atelectasis. Current Policy To avoid atelectasis and oxygen supply due to + Gz exposure, the oxygen concentration supplied to the USAF pilots at low altitudes should not exceed 60%. Air Services Communications Center Air Standards 61 / 22A provides that at 20,000 ft (6096 m) or less, the oxygen concentration of pilots shall not exceed 75%. With the introduction of on-board oxygen generation systems, there is no longer a need to store oxygen. Provide high concentrations of oxygen at all altitudes: (1) it will assist pilots in the denaturation of body fluids during flight and reduce the risk of decompression sickness; (2) increase arterial oxygen concentrations if hyperventilation causes an imbalance of ventilation / perfusion; (3) Because of one