12.急性呼吸窘迫症候群病人,當FiO2=0.21時,PaO2=50 mm Hg,而提高FiO2=1.0時,PaO2=60 mm Hg。下列何者為病人之肺部氣體交換狀況?
(A)高比率的無效腔(dead space)通氣
(B)高通氣/灌流失衡(high ventilation/perfusion mismatch)
(C)低通氣/灌流失衡(low ventilation/perfusion mismatch)
(D)高比率的肺內分流(shunt)
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統計: A(0), B(4), C(2), D(10), E(0) #3491360
統計: A(0), B(4), C(2), D(10), E(0) #3491360