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肛瘘

2021-11-20 15:50  views:379  source:小键人2701323    

指齿状线以下肛管皮肤的纵向小溃疡,长约0.5~1cm;肛裂和痔疮伴随发生
病因:解剖因素:后正中线,前后壁;外伤:大便干硬摩擦;感染:慢性炎症
病程:
新鲜肛裂:裂口新鲜,整齐,底部有弹性,色红,无瘢痕形成
陈旧性肛裂:梭形溃疡:纵裂,长约0.5~1cm;肛乳头肥大:裂口上段的肛门瓣和肛乳头水肿;前哨痔:裂口下端皮肤
因炎症、水肿及静脉、淋巴回流受阻,形成袋状皮垂先下突出于肛门以外;潜在瘘道:肛窦感染化脓,形成小脓肿
临床表现:
疼痛:周期性疼痛;
便血:与肛裂大小、深浅有关;出血量不大,小于内痔的出血量
便秘:加重肛裂
诊断:
有典型的临床表现就应考虑肛裂的可能。局部检查发现肛管后正中部位的肛裂“三联征”,就可确诊
确诊肛裂者,不宜做直肠指检和肛镜检查
注意和其他溃疡性钢管疾病(结合、克隆病、溃疡性结肠炎)相鉴别
一般治疗:
口服润肠药物:麻仁丸、蜂蜜、乳果糖口服液
定期生理排便:早晨起床或饭后
坐浴或外洗:1/5000高锰酸钾溶液,花椒盐水
局部敷药:利多卡因软膏、马应龙麝香痔疮膏、硝酸甘油乳膏
手术治疗:
肛裂切除术
内括约肌切除术:侧方内括约肌切断术



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