(来学网)Ⅱ型呼吸衰竭的血气诊断标准是
  • A.
    (来学网)PaO<50mmHg,PaCO>50mmHg
  • B.
    (来学网)PaO<50mmHg,PaCO>60mmHg
  • C.
    (来学网)PaO<60mmHg,PaCO>50mmHg
  • D.
    (来学网)PaO<40mmHg,PaCO>40mmHg
  • E.
    (来学网)PaO<70mmHg,PaCO>55mmHg