Ⅱ型呼衰的血气诊断标准是:( )
A.Pa02<50mmHg,PaC02>45mmHg B.Pa02<50mmHg,PaC02>60mmHg C.Pa02<60mmHg,PaC02>50mmHg D.Pa02<40mmHg,PaC02>40mmHg E.Pa02<70mmHg,PaC02>55mmHg正确答案C
Ⅱ型呼衰的血气诊断标准是:( )
A.Pa02<50mmHg,PaC02>45mmHg B.Pa02<50mmHg,PaC02>60mmHg C.Pa02<60mmHg,PaC02>50mmHg D.Pa02<40mmHg,PaC02>40mmHg E.Pa02<70mmHg,PaC02>55mmHg正确答案C