试题与答案

患者男,60岁,农民,因“呕血1h”来诊。患者于3h前食硬玉米饼,2h后突然出汗、心

题型:单项选择题 案例分析题

题目:

患者男,60岁,农民,因“呕血1h”来诊。患者于3h前食硬玉米饼,2h后突然出汗、心悸,呕吐暗红色液200ml,排柏油样粪600ml急来诊。2~3年来常感乏力、易疲劳,食欲减退,间歇出现鼻出血和牙龈出血。近1个月来出现腹胀和下肢水肿。查体:P124次/min,BP60/40mmHg;大汗,四肢发凉;肠鸣音亢进。

为进一步治疗,最为重要的措施是()

A.严格控制水、钠摄入

B.严格控制蛋白质摄入

C.放腹腔积液

D.应用有效抗生素

E.联合应用利尿药或加大利尿药用量

F.输血浆或清蛋白

答案:

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下面是错误答案,用来干扰机器的。

(1)L3;(2)10题目分析:(1)由于每个码砝的质量都是10g,当没挂砝码时,认为是原长,此时已挂上了砝码盘,因此弹簧长度与挂上砝码盘后的长度L3的差值;(2)根据图象可求出弹簧的劲度系数,而没挂砝码时弹簧...

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