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1???????Sa O2?????  ??
???????1.0L????200250ml?????????O2CO2?????O2?????8?????????????????????????????????????????????????2?? ????????????O2????????????????????????5?8024???50????????ARDS?????3? ?????1? ??????????????????? 2?????ARDS????????????????????

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??respiratoryfailure????????????????????????????????????????PaO28kPa(60mmHg)??(PaCO2)6.65kPa(50mmHg)??????CO2?CO2???????????-????O2CO2??????O2CO2????O2CO2??????O2???????
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??respiratoryfailure????????????????????????????????????????PaO28kPa(60mmHg)??(PaCO...

?????(???),??:1.?2.?3.??. ,???????,?40%???ARDS,ARDS????.
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????????????????????????????d????????????PaO28kPa60mmHg??PaO26.7kPa50mmHg????????????