问题 单项选择题 A1型题

关于手术切口,不正确的是()

A.切口尽量与皮纹方向相一致

B.为获得最小、最轻微的瘢痕,手术切口的形状最好是直线形

C.活检手术切口力求与再次手术切口相一致

D.切口尽量与术区内重要的解剖结构相平行

E.手术切口应留有余地,以保留延长切口的可能性

答案

参考答案:B

解析:切口设计为保证手术效果和减少术后瘢痕畸形,口腔颌面部手术的切口选择,必须全面、综合地加以考虑。①解剖要考虑手术区的神经、血管、腮腺导管等重要组织结构的位置和行径,切口应尽量与之平行,以免意外损伤和不必要的牺牲。②部位由于颌面部功能和美观的要求,切口应选择比较隐藏的部位和天然褶皱处,如颌下、耳前、颌后、鼻唇沟等。切口的方向要尽量与皮纹方向一致(因皮肤张力方向与皮纹方向一致),以期获得最小、最轻的瘢痕。活检手术的切口应力求与再次手术的切口一致。③长短切口的长短原则上以能充分显露为宜。设计时视具体情况而定,避免过长或过短。过长损伤组织多,术后瘢痕大;过短则显露不清,易造成意外损伤,且过分牵拉反而加重损伤。此外,在行手术切口设计时还应考虑切口的形状(弧形和“S”形为好)和延长切口的可能性,以留有余地并获得最佳效果。

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    I can't remember when I started collecting litter. But it was when I got tired of     1    litter nearby
and realized that     2   was going to pick it up.
    I live near a    3     in Enshi, Hubei Province. I can walk there in three    4   ! I used to love going
there    5   with my dog. But one day there was so much litter there that I became very unhappy. I
decided I had to clean up the forest. I wanted to  6   happy going there again.
    I made my    7   trip to clean the forest that afternoon. I took a big black rubbish bag with me. Ten
minutes    8   starting to pick up litter, my bag was full! It had cans, bottles, broken glass and
newspapers in it. From then on, I went to the forest four times a year to pick up the litter. I often    9  
there for three hours. It makes me feel    10   to do something for the environment.
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单项选择题