4.下列關於呼吸窘迫症候群(respiratory distress syndrome)的敘述,何者最不適當?
(A)臨床表現為early onset of tachypnea,可能合併retraction, grunting and cyanosis,通常剛出生就是呼吸窘迫最嚴重時,在24~72小時內恢復 (B)胸部X光表現為low lung volumes, diffuse reticulogranular pattern, and air bronchograms (C)處置原則包括permissive hypercapnia及avoidance of hyperoxia (D)成因為surfactant deficiency,導致肺泡塌陷,無法維持適當功能肺餘容積