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氧疗法的目的是提高肺泡氧分压(P_AO_2),增加每分钟氧的弥散量,从而提高动脉血氧的含量,纠正呼吸衰竭时的低氧血症。但氧疗方法和给氧浓
The purpose of oxygen therapy is to increase the alveolar oxygen pressure (P_AO_2) and to increase the amount of oxygen per minute, so as to improve the content of arterial oxygen and correct the hypoxemia during respiratory failure. But oxygen therapy and oxygen concentration