问题 单项选择题

下列哪项不是高选择性迷走神经切断术的优点

A.不需附加引流手术

B.消除神经性胃酸分泌,不引起胃滞留

C.保留了幽门括约肌功能

D.保留了正常的胃容积

E.手术效果稳定,术后无溃疡复发率

答案

参考答案:E

解析:
高选迷切由于保留了鸦爪支,术后胃蠕动和幽门括约肌的功能都没受到影响,无需附加引流手术。

迷走神经干切断术选择性迷走神经切断术高度选择性迷走神经切断术
切断部位食管裂孔水平切断左右腹腔迷走神经干在迷走神经前干发出肝支以下,后干发出腹腔支以下切断前后迷走神经分布至胃底、胃体的分支,保留胃窦的鸦爪支
优点①未切断肝支、胆囊支、腹腔支,避免了功能紊乱
②广泛应用,DU首选
①保留了鸦爪支,术后不会引起胃潴留
②胃容积未变,不影响进食
③手术简单安全,应用日渐增多
缺点因严重并发症
已弃用
①复发率较高
②丧失了幽门括约肌功能
③导致胃潴留,加成型术后有胃切除术的并发症
①复发率更高(达10%)
②对GU疗效不如胃大部切除

阅读理解

阅读下面的短文,并根据短文后的要求答题。

    Since 1850, the temperature of Earth's surface has increased about 0.6°C. Scientists predict it may warm

much more by the end of this century. Who's turning up the heat? Well, it seems that we are! Some of this

global warming may be natural. However, nearly all scientists now agree that most of it is due to peoples

actions. Over the past 150 years, we've added huge amounts of certain gases, especially carbon dioxide (CO2)

to the air. These gases can keep heat near Earth's surface, so more carbon dioxide means more heat is kept

near Earth's surface.Global warming may change the weather in ways that lead to more severe storms, floods

and droughts.

    We add carbon dioxide to the air when we burn things, especially fossil fuels. Fossil fuels are energy sources

formed from the remains of plants and animals that lived millions of years ago. Coal, oil, and natural gas are all

fossil fuels. People in the United States and other countries started bunting large amounts of fossil fuels more

than a century ago. The amount d fossil fuels being burned each year has been increasing worldwide. The

more we burn, _____________________.

     What can we do to help? Nowadays to live a low-carbon life is quite popular in the world. Low-carbon

means to reduce the amount of carbon dioxide. Saving energy and reusing are the key words. In fact, even

the simplest everyday activities can make our lives low-carbon.

1. What problem can global warming cause?(根据短文内容回答问题)

    __________________________________________________________________________

2. What are fossil fuels?(同上)

    __________________________________________________________________________

3. 请将第一段中的划线句子翻译成汉语。

    __________________________________________________________________________

4. 请根据第二段内容,将最后一个句子补充完整。

    The more we bum, __________________________________________________________.

5. 请写出日常生活中的一种“低碳”行为(用英语写一个句子)。

    __________________________________________________________________________

选择题