妊娠期母体循环系统的变化，下列哪项错误（） A.血容量至妊娠末_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题 A1型题

妊娠期母体循环系统的变化，下列哪项错误（）

A.血容量至妊娠末期增加40％～45％

B.心率从孕早期至孕末期每分钟增加10～15次

C.心搏出量至妊娠32～34周达高峰

D.妊娠后期心脏向左、向上、向前移位

E.第二产程期间，心搏出量略减少

答案

参考答案：E

解析：A、B、C、D均为妊娠期正常母体循环变化。母体循环血容量于妊娠6～8周开始增加，至妊娠32～34周达高峰，增加40％～45％。心率于妊娠晚期休息时每分钟增加10～15次。心排出量增加对维持胎儿生长发育极为重要。心排出量自妊娠10周逐渐增加，至妊娠32周达高峰。妊娠后期因膈肌升高，心脏向左上方移位更贴近胸壁，心尖搏动左移约1～2cm，心浊音界稍扩大。孕妇心排出量对活动的反应较未孕妇女明显。临产后在第二产程心排出量显著增加。因此E错误。

完形填空

I take the train to work every morning from a train station near my house. I can get to the station quite _36__ because there’s a short cut（捷径）to the station. But in the summer, it can get quite smelly because of all the   37. So I always try to   38   through it. Today I was trying to do so as usual __39__ something made me stop for a moment. I saw the most beautiful __40__ by an old woman walking in front of me with the help of a white __41__.
She was short and   42   and had white hair. She was walking __43__ as each step took some effort. I hadn’t specially noticed her   44 , until she stopped near a rubbish bin（垃圾箱）.
She slowly placed her walking stick ___45__ the rubbish bin. Then she leaned （斜倚着） on it with her right hand. She bent down and _46__ the rubbish. She clearly found it _47___ and it took her a while. She _48__ some rubbish with her left hand and slowly straightened herself up again. All the while she used the rubbish bin to __49   herself. She threw the rubbish inside the bin and then   50 walking. It all took her great effort.
There’s no much rubbish and no one ever does ___51__ about it. I was moved to _52__ this old woman make such a great effort to keep even a small part of it __53__! I haven’t been able to __54__ thinking about that all day.
I want to follow her example. I’ve decided to pick up rubbish of the __55__ if I meet from now on. I hope people will do the same as I do.

A．at midnight

A．searched for

C．reached for

B．dropped down

单项选择题

男性，70岁，不洁饮食后腹泻、呕吐伴发热一天，突然昏迷来诊，血压90／60mmHg，血糖35mmol／L，血钠155/mmol/L，BUN12mmol／L，尿糖（++++），尿酮体（+），该患者最可能的诊断为（）

A.糖尿病酮症酸中毒

B.脑血管意外

C.高渗性糖尿病昏迷

D.感染性休克

E.乳酸酸中毒