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问题 单项选择题

若检查显示胆总管及以上胆管扩张，胆总管上段直径约2.8cm，下段探查不清。为进一步明确诊断，应选择的检查是

A．CT

B．ERCP

C．MRI

D．核素扫描

E．腹腔镜检查

答案

参考答案：B

单项选择题

A client on prolonged bed rest has developed a pressure ulcer. The wound shows no signs of healing even though the client has received skin care and has been turned every 2 hours. Which factor is most likely responsible for the failure to （）

A. Inadequate vitamin D intake.

B. Inadequate protein intake.

C. Inadequate massaging of the affected area.

D. Low calcium level.
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单项选择题

下列药物属于胃黏膜保护药的是

A．氢氧化铝
B．雷尼替丁
C．奥美拉唑
D．硫糖铝
E．西咪替丁
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