五、鼻腔粘连

五、鼻腔粘连

鼻咽癌放疗后鼻腔粘连形成可能与鼻腔接受照射后局部放射性炎症继发感染,和长期应用鼻腔黏膜血管收缩剂有关。

(1)临床表现:缓进性、持续性鼻塞,部分患者合并慢性鼻窦炎时伴有流涕,甚至嗅觉下降。鼻内镜检查可见鼻腔黏膜粘连带形成,严重者形成单侧或双侧鼻腔、后鼻孔狭窄甚至完全闭锁。手术是唯一有效的方法,近年来随着鼻内镜的广泛应用,经鼻内镜鼻腔粘连松解术能有效治疗鼻腔粘连。

(2)手术方法:根据粘连严重程度选用局部或全身麻醉,在鼻窥镜引导下,剥离鼻甲与鼻甲、鼻甲与鼻中隔之间的粘连带,粘连带已经形成瘢痕组织者,可用组织剪予以分离,也可使用YAG激光光纤或微波直接切割,使粘连带气化或炭化。后鼻孔狭窄或完全闭锁者,切除后鼻孔粘连带或闭锁软组织。切割时吸引器及时吸除烟雾,保证视野清晰,术后在粘连带剥离处填塞明胶海绵或其他可吸收材料,出血明显、疤痕粘连和后鼻孔闭锁者填塞碘仿纱布,1~2周后取出。以后定期鼻内镜下复查,重新粘连者予以再次分离,直至粘连带完全解离,创面完全上皮化。后鼻孔闭锁者还可采用导尿管或其他材料较长时间置放于后鼻孔处,防止后鼻孔再次狭窄或闭锁。

(3)注意事项:分离粘连带遵循损伤最小化的原则,避免术后更大范围的鼻腔粘连。对于小范围的粘连带,分离后使用明胶海绵等可吸收材料隔离创面,并通过多次换药处理,最终达到粘连带完全分离的目的。除非广泛的鼻腔粘连或完全性后鼻孔闭锁,尽量避免长时间的鼻腔填塞。

(陈明远)

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