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什么是结肠损伤
结肠损伤(Injury ofColon)是腹部钝性损伤及穿透性损伤所致的较常见的空腔脏器损伤,也可因医源性损伤如钡剂灌肠、结肠镜检查灼切除肠息肉所引起的结肠穿孔等。因结肠内细菌较多所以腹膜炎严重,全身中毒症状较重,常危及生命结肠有一部分居腹膜外,损伤时,腹膜炎不明显易漏诊;腹部损伤往往是多脏器多段肠管损伤,腹膜炎明显,易掩盖结肠损伤造成误诊或漏诊应提起注意。
结肠损伤的临床症状
发病急、重,常出现休克。伤后短时间内而出现腹膜炎表现;迟发性肠破裂或坏死在伤后一段时间不出现急腹症表现,可于伤后数日或10余日出现腹膜炎,开始轻,渐加重。
诊断:本病以青壮年多见,有明确的腹部外伤史,起病急,伤后短时间内即出现腹膜炎表现,迟发性结肠破裂,可于伤后数10余日出现腹膜炎,开始轻,渐加重。开放性腹部损伤导致结肠破裂,多于入院后行剖腹探查时诊断,纯性腹部损伤可根据典型腹膜炎表现和X线检查有膈下游离气体时作出诊断。
辅助检验:X线检查:可见膈下游离气体。B超、CT检查有助于诊断。实验室检查:血象常增高,中性粒细胞比例增高。
结肠损伤的治疗方案
由于结肠壁薄、血液供应差、含菌量大,故结肠破裂的治疗不同于小肠破裂。除少数裂口小、腹腔污染轻、全身情况良好的病人可以考虑一期修补或一期切除吻合(限于右半结肠)外,大部分病人均需先采用肠造口术或肠外置术处理之,待3-4周后病人情况好转时,再行关闭瘘口。即使采用一期修补或切除吻合术,也宜在其近口侧进行造口术,暂时转移粪流并避免肠管膨胀,并在手术结束后即行肛管扩张,以良好愈合。
1、抗感染:结肠内存在大量细菌,外伤破裂后极易引起严重的感染,病死率高,抗感染治疗除加强支持办法,补液,纠正水、电解质平衡失调外,使用抗生素是抗感染的首要措施。
2、手术治疗:是治疗结肠破裂的根本措施。
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