问题 单项选择题

患者,女性,63岁,脑卒中后左下肢肿胀一周,超声示左下肢深静脉血栓,现诉胸部不适,呼吸困难。

如果肺通气显像正常,则诊断肺栓塞

A.高度可能
B.中度可能
C.低度可能
D.基本排除
E.尚不明确

答案

参考答案:A

解析:结合患者病史,考虑为血栓形成,可能血栓脱落造成肺动脉栓塞,首选肺灌注显像进行显像,显像剂为99mTc-MAA。肺灌注显像注射显像剂时应避免回血,以防止血液与MAA形成更大颗粒,引起不应有的栓塞或形成肺内的“大热点”影响结果分析。肺灌注显像见肺部2个节段显像剂缺损,考虑为肺栓塞可能,需要结合胸片或肺通气显像进一步诊断。

阅读理解

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多途选项。

Maybe you are an average(一般的) student. You probably think you will never be a top student. This is not necessarily so, however. Anyone can become a better student if he or she wants to. Here’s how:

__ 小题1:____ When planning your work, you should make a list of things that you have to do. After making this list, you should make a schedule(计划) of your time. First your time for eating , sleeping, dressing, etc. Then decide a good, regular time for studying.( Don’t forget to set aside(留出) enough time for entertainment. A weekly(每周的) schedule may not solve all your problems, but it will force(强迫) you realize what is happening to your time.

__小题2:__ . Look around the house for a good study area. Keep this space, which may be a desk or simply a corner of your room, free of everything but(除了) study materials(材料). No games, radios, or television. When you sit down to study, concentrate on(集中精力) the subject.

_小题3:___ There are other methods that might help you with your studying. Listening carefully in class means less work later. Taking notes will help you remember what the teacher says.

_小题4:____. When you get home from school, go over (复习)your notes, review the important points that your teacher is going to discuss the next day, read that material. This will help you understand the next class. If you do these things regularly, the material will become more meaningful(有意义的), and you’ll remember it longer.

_小题5:____. The purpose(目的)of a test is to show what you have learned about a subject. They help you remember your new knowledge. The world won’t end if you don’t pass a test, so don’t be over-- worried.

A.Study regularly.

B.Believe in yourself.

C.Plan your time carefully.

D.Find a good place to study.E. Make good use of your time in class.

F. Develop a good attitude towards tests.

G. This will help you understand the next class.

问答题 简答题