(来学网)呼吸衰竭患者,血气分析为:PaO50mmHg,PaCO70mmHg,给予哪种吸氧浓度较合适
  • A.
    (来学网)10%~20%
  • B.
    (来学网)24%~28%
  • C.
    (来学网)30%~40%
  • D.
    (来学网)45%~50%
  • E.
    (来学网)40%~60%