目的探讨提高吸氧浓度后动脉血达到充分氧合的时间。
Objective To investigate the time length of sufficient oxygenation in arterial blood after increasing concentration of oxygen inhalation.
将供氧管与急救袋和流量计相连，将氧气调节至100%吸氧浓度分数或规定速度。
A. Connect oxygen supply tubing to Ambu bag and oxygen flowmeter. Adjust oxygen to 100% FiO2 or ordered rate.
目的：观察间断、高浓度吸氧对大鼠抗氧化酶活性及肺组织的影响。
OBJECTIVE: To observe the effect of intermittent high concentration oxygen on antioxidase activity and pulmonary tissue in rats.
目的：探讨不同浓度预吸氧对肝脏抗氧化损伤能力的影响。
Objective: To investigate the effects of preoxygenation on hepatic antioxidant capacity in rats.
目的：探讨不同浓度预吸氧对肝脏抗氧化损伤能力的影响。
Objective: To investigate the effects of preoxygenation on hepatic antioxidant capacity in rats.
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