问题 问答题 简答题

呼吸功能障碍的病人,手术前准备应注意什么?

答案

参考答案:

(1)停止吸烟2周,鼓励多练习深呼吸和咳嗽,以增加肺通气量和改善引流。

(2)应用麻黄碱、氨茶碱等支气管扩张剂及异丙基肾上腺素雾化吸入等,对阻塞性肺功能不全有较好作用,可增加肺活量。痰液稠厚的病人,采用蒸气吸入,口服氯化铵或碘化钾,使痰液稀薄。经常咯脓痰者,术前3~5日应使用抗生素,并做体位引流,促使脓性分泌物排出。

(3)经常发作哮喘的病人,可予口服地塞米松0.75mg,每日3次,以减轻支气管粘膜水肿。

(4)麻醉前给药量要少,以免呼吸抑制和咳痰困难。使用度冷丁比吗啡好,因其具有支气管解痉作用。阿托品要适量,以免增加痰的粘稠度。

阅读理解

阅读理解。

     In a world with limited land, water and other natural resources, the harm from the traditional business

model is on the rise. Actually, the past decade has seen more and more forests disappearing and the

globe becoming increasingly warm. People now realize that this unhealthy situation must be changed, and

that we must be able to develop in sustainable ways. That means growth with low carbon or development of sustainable products. In other words, we should keep the earth healthy while using its supply of natural

resources.

     Today, sustainable development is a proper trend in many countries. According to a recent study, the

global market for low-carbon energy will become three times bigger over the next decade. China, for

example, has set its mind on leading that market, hoping to seize chances in the new round of the global

energy revolution. It is now trying hard to make full use of wind and solar energy, and is spending a huge

amount of money making electric cars and high-speed trains. In addition, we are also seeing great growth

in the global markets for sustainable products such as palm oil, which is produced without cutting down

valuable rainforest. In recent years the markets for sustainable products have grown by more than 50%.

     Governments can fully develop the potential of these new markets. First, they can set high targets for

reducing carbon emissions and targets for saving and reusing energy. Besides, stronger arrangement of

public resources like forests can also help to speed up the development. Finally, governments can avoid

the huge expenses that are taking us in the wrong direction, and redirecting some of those expenses can

accelerate the change from traditional model to a sustainable one.

     The major challenge of this century is to find ways to meet the needs of growing population within the

limits of this single planet. That is no small task, but it offers abundant new chances for sustainable product

industries.

1. The traditional business model is harmful because of all the following EXCEPT that ______. 

A. it consumes natural resources         

B. it makes the world warmer 

C. it brings severe damage to forests     

D. it makes growth hard to continue

2. What can we infer from Paragraph 2?

A. China lacks wind and solar energy.

B. China is the leader of the low-carbon market.

C. Palm oil is made at the cost of valuable forests.

D. High-speed trains are a low-carbon development.

3.To fully develop the low-carbon markets, governments can ______.

A. cut public expenses              

B. encourage energy conservation

C. develop public resources          

D. forbid carbon emission

4. What is the main purpose of the passage?

A.To advocate sustainable development.   

B.To compare two business models.

C.To predict a change of the global market.

D.To introduce a new business model.

单项选择题