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TcyanosisT??????deoxyhemoglobin ?????reduced Hb ???????????????????????????????????????????????

? ??????????????????5 % ???30 % ???????????1g???Hb?1 . 34ml?????????50g/L ( 5g/dl ??????R??????????150g/L?50g / L ?????1 / 3 ???????SaO266 ????PaO2?34mmHg ????Hb ???SaO2< 85 ?????????SaO2???SaO285 ?60 ?????SaO285 % ?c?????Hb < 60g/L ??SaO2????R??T???????

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