问题
单项选择题
患者女，70岁，急性下壁心肌梗死，收入CCU病房。患者出现下列哪种心律失常最危险（）。
A.窦性心动过速
B.偶发房性期前收缩
C.窦性心律不齐
D.三度房室传导阻滞
E.偶发室性期前收缩
答案
参考答案：D
解析：三度房室传导阻滞又称为完全性房室传导阻滞因为心室率缓慢，可出现晕厥、阿-斯综合征、心脏性猝死、心力衰竭、脑栓塞等并发症。
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患者女，70岁，急性下壁心肌梗死，收入CCU病房。患者出现下列哪种心律失常最危险（）。
A.窦性心动过速
B.偶发房性期前收缩
C.窦性心律不齐
D.三度房室传导阻滞
E.偶发室性期前收缩
参考答案：D
解析：三度房室传导阻滞又称为完全性房室传导阻滞因为心室率缓慢，可出现晕厥、阿-斯综合征、心脏性猝死、心力衰竭、脑栓塞等并发症。
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| It's September 1st, and we're all back to school. It's good to 1 all my teachers and friends again. They all 2 fine. We're in Grade Eight this year. We have 3 new subjects. I'm not very 4 at Chinese, but Han Mei says she can 5 me. I think I can 6 it better. I like English very much. Zhang Hong likes English, 7 . But she needs help. I 8 I can help her. Mr Hu is our new English teacher. He 9 know all of us, so he has our names on a piece of paper and 10 our names before he begins his lesson. |
| ( )1. A. see ( )2. A. do ( )3. A. a lot ( )4. A. well ( )5. A. learn ( )6. A. do ( )7. A. either ( )8. A. am afraid ( )9. A. doesn't ( )10. A. gives | B. watch B. see B. some B. good B. give B. play B. very B. think B. don't B. calls | C. find C. look C. lot C. bad C. help C. look C. much C. am sorry C. does C. asks | D. look D. sound D. much D. nice D. need D. feel D. too D. want D. do D. tells |