关于不协调性宫缩乏力，正确的是 （）
A.子宫肌肉不协调收缩，致使宫腔内压力处于低张状态
B.子宫收缩极性倒置，但不影响宫口开大
C.痉挛性狭窄环紧箍儿体，阻碍胎儿下降
D.使用一般镇静药物效果不佳
E.较少发生胎儿宫内窘迫
参考答案：C
解析：不协调性子宫收缩乏力又称高张性子宫收缩乏力。多见于初产妇，其临床表现为子宫收缩的极性倒置，节律不协调。宫缩时宫底部不强，而是中段或下段强。宫缩间歇期子宫壁不能完全松弛，宫缩不能使宫口如期扩张和先露如期下降，属无效宫缩。这种宫缩容易使胎儿胎盘循环障碍，出现胎儿宫内窘迫。处理时原则上是恢复子宫收缩的生理极性和对称性，如镇静药物效果较好。但在子宫收缩恢复其协调性之前，严禁应用催产素。
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小题1:My family immigrated when I was still studying my healthcare courses in a local medical college. So I had to give up my bachelor degree and moved with them. Now I hope to find a college that offers the degree education on the Internet and realize my dream of being a doctor. 小题2:When I looked after my mother in the hospital ten years ago, I was moved by what the nurses did. They devoted themselves into helping every patient get through the hard time. Since then, I have been determined to take up nursing career, and now, the time is coming. 小题3:When studying in the university, my professor often told me that it was impossible for me to get every problem solved just with the knowledge in textbooks. It makes me realize I should look for a health care center where I can learn practical skills and gain more experience. 小题4:After graduating from a medical college and get my bachelor degree five years ago, I became a doctor in a big local health care center. However, I find modern medical research developing fairly rapidly, so I hope to start my postgraduate degree study in a university and serve the people here better. 小题5:Being a retired doctor, my father always hopes that I can continue his career. I know a doctor can help lots of people, but in fact, my favorite job is managing, no matter in a company, an institution or an organization. So maybe learning how to manage a hospital can satisfy both of us. |
