鼻内镜手术时损伤筛前动脉可引起A.大出血B.鼻腔粘连C.脑脊液鼻漏D.眶内血肿E.颅底血肿

作者: rantiku 人气: - 评论: 0
问题 鼻内镜手术时损伤筛前动脉可引起
选项 A.大出血 B.鼻腔粘连 C.脑脊液鼻漏 D.眶内血肿 E.颅底血肿
答案 ADE
解析 :筛前动脉由视神经孔沿眶内侧壁前行穿筛前孔出眶,以骨性管内起行于筛房顶至嗅窝前端穿入颅底。筛前动脉管直径约为3mm,临床以筛泡前壁的附着处为标志,也为颅底和前筛顶的交界处。血管出颅口处有硬脑膜包绕。血管损伤后,因收缩入骨管,使止血困难,引起眶内出血、颅底血肿等症状。

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