Which of the following nursing interventions is most important postoperatively for an infant who has received a ventriculoperitoneal shunt()

A. Monitoring intake and output.

B. Allowing the infant to rest undisturbed.

C. Providing age-appropriate diversionary activities.

D. Initiating oral feedings.

吸烟后不出现下列哪项变化

A．肺泡中吞噬细胞功能减弱

B．可使支气管平滑肌痉挛

C．支气管杯状细胞退化

D．黏液分泌增多

E．纤毛运动受抑制