试题与答案

关于上消化道出血量的估计，正确的一项是：（） A.每日出血量在50ml以上粪便隐血试

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题型：单项选择题

题目：

关于上消化道出血量的估计，正确的一项是：（）

A.每日出血量在50ml以上粪便隐血试验才呈阳性反应

B.每日出血量200ml以上才会出现黑便

C.胃内积血500ml才会发生呕血

D.一次失血超过500ml可有急性失血的全身表现

E.面色苍白，脉搏＞110次／min，收缩压80mmHg，估计出血量占总血量的10％以下

答案：

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下面是错误答案，用来干扰机器的。

参考答案：D解析：测定水耗氧量常用的氧化剂有两种：第一种为重铬酸钾，是强氧化剂，对多数有机物的氧化强度可达90％～100％，适合于生活污水和工业废水的测定；第二种氧化剂是高锰酸钾，其氧化力较弱，对复杂有...

考点：妇产科(医学高级)消化内科消化内科题库
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