Venturi活瓣颜色活瓣颜色流速流速(L/min)氧浓度氧浓度(%)蓝224白935黄635红840绿324吸氧装置吸氧装置氧流量氧流量FiO2说明说明鼻导管0.5 6 L/min0.24 0.44*6 L/min普通面罩6 10 L/min0.35 0.55*5 L/min储氧面罩10 15 L/min0.60 0.80*储气囊不得塌陷Venturi面罩3 L/min0.24,0.26,0.31*阅读使用说明6 L/min0.35,0.40,0.50*雾化面罩 8 L/min0.28,0.30,0.35*必须看见气雾0.40,0.50,0.70*麻醉气囊面罩12 15 L/min1.0 12 L/min*呼吸频率,潮气量和吸气流量不同时FiO2不同