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1.????????

2.????

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3?? ??????????????dK???
4? ??????????????????????
5?? ???????????????????
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(1)???28???????????????????????????k?????????
(2)???????????????????????
(3)?????????????????????????
2.???
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(2)??????????????
3.??????? (1)???????????????????????????????
(2)????????????
4.???????????
5.???
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(2)????????...

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????????????????????????????d????????????PaO28kPa60mmHg??PaO26.7kPa50mmHg????????????

1???2???????3??4?????????3-5??5????????
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