问题 单项选择题 A2型题

患者,男性,20岁。因"突发神志不清,呼吸心跳停止10分钟"来院,急诊予气管插管呼吸机辅助通气,并连接呼气末CO2监测仪判断病情,对于波形和数字,下列说法错误的是()

A.如插管误入食管,不能显示PetCO2波形

B.自主呼吸和循环恢复后,PetCO2逐渐上升

C.再次心跳停止,PetCO2逐渐下降至零

D.循环恢复后,如血压降低,PetCO2逐渐下降

E.循环恢复后,如PetCO2>10mmHg(1.33kPA.,提示复苏成功率高

答案

参考答案:C

解析:PetCO2也可反映循环功能,在低血压、低血容量、休克和心力衰竭时,随着肺血流减少,PetCO2逐渐降低,呼吸心跳停止,PetCO2急剧降至零,复苏后逐渐回升,如PetCO2>10mmHg(1.33kPa),则复苏成功率高。

阅读理解

任务型阅读.

      Lots of people like diving into water, because they can explore the underwater world. But there is

another kind of diving.  Some people dive into the sky! This is really a very exciting sport. A skydiver

goes high up in the air on a plane. Then he jumps off the plane and floats(飘)in the air with the help of 

a parachute(降落伞).A parachute is like a huge umbrella.It is put on the back of the skydiver. When

the skydiver reaches a certain height, he will pull a string(细绳)and the parachute will open up in seconds

and carry him gently(轻轻地)down to the ground.  Skydivers like doing a lot of fascinate tricks in the

air.  After jumping off the plane one after another, they will try to stay in the air and hold each other's

hands. |They can form different shapes. Is it safe to do skydiving? Yes, as long as we receive right training. But sometimes, accidents do happen. In Canada, two skydivers were killed in 1991 when they jumped

off  the plane.  Because their parachutes got tied up with each other, the parachutes couldn't open up and

both crashed down and died.

1. Why do people like diving into water?

                                                                      

2. How does a skydiver go up into the sky?

                                                                      

3. What does a parachute look like?

                                                                      

4. Where does a skydiver put his parachute?

                                                                      

5. Why were two skydivers killed in Canada?

                                                                      

选择题