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一天腹泻十几次,甚至危及生命!警惕这种细菌感染-肇庆在线
首页 › › 一天腹泻十几次,甚至危及生命!警惕这种细菌感染

一天腹泻十几次,甚至危及生命!警惕这种细菌感染

作者: 【编辑:周驰】 · 2026-09-07 14:39 · views 0
【编辑:周驰】作者
作者2026-09-07 14:39

  腹泻是很多人都有过的经历,多数情况下症状较轻,适当休息或服药后即可缓解。但有一种腹泻可能比普通肠炎严重得多——患者一天内腹泻十余次,出现脱水、发热,严重时甚至危及生命。而这一切的起因,可能就是艰难梭菌感染。

  一、艰难梭菌是什么,怎么传播

  艰难梭菌是一种厌氧的革兰阳性芽孢杆菌,它最突出的特点是能够形成芽孢——相当于给自己穿上了一层坚硬的“盔甲”,使其在体外环境中能存活数月甚至数年,可抵抗高温、干燥、酒精及多种常用消毒剂。

  艰难梭菌主要通过粪一口途径传播。细菌随感染者的粪便排出体外,污染周围环境(马桶、门把手、床栏、地面等)或物品,其他人用手接触这些被污染的表面后,再触摸口鼻,就可能将细菌吞入体内。在医院、养老院等人员密集的场所,由于患者免疫力较低,加上频繁的医疗操作和近距离接触,交叉感染的风险更高。

  二、感染后有哪些症状

  艰难梭菌感染的症状出现时间差异较大,最早可在开始使用抗生素后数小时至2天内出现,最晚可于停用抗生素后3周内发生。

  初期症状主要表现为腹泻,24小时内排便次数常超过3次,粪便多为水样便。随着病情进展,部分患者可出现发热、腹痛、腹胀等表现,腹泻可能发展为黏液便或血便。重症患者可发生伪膜性肠炎,且常伴有中毒性巨结肠、肠穿孔、感染性休克等并发症。

  需警惕的是,严重感染可危及生命,若在使用抗生素期间或停药后出现持续性腹泻、发热、腹痛等症状,应及时就医。

  部分人群可携带艰难梭菌但无任何临床症状,医学上称为“无症状定植”,这种情况不属于感染,通常无需治疗。需要特别说明的是,2岁以下婴幼儿腹泻不建议优先开展艰难梭菌检查,除非存在明确的高危因素或处于暴发感染事件。

  三、哪些人群容易感染艰难梭菌

  长期使用抗生素的人群(最重要的危险因素);

  65岁以上老年人(免疫功能随年龄下降,肠道微生态稳定性较差);

  长期住院者(环境芽孢污染率较高,交叉感染风险增加);

  存在严重基础疾病或免疫功能低下者(如恶性肿瘤放化疗期间、器官移植术后、炎症性肠病等)。

  四、如何预防?

  合理使用抗生素:不自行购买或随意使用抗生素,严格遵从医嘱,这是最根本、最有效的预防措施。

  正确洗手:含酒精的免洗洗手液对艰难梭菌芽孢清除效果有限,在艰难梭菌暴发期间,建议使用肥皂和流动水搓洗至少20秒,尤其便后更应严格执行。

  环境消毒:医院或家庭中有感染患者时,应使用含氯消毒剂清洁门把手、马桶等可能被污染的表面,普通酒精类消毒剂无法杀灭芽孢。

  住院期间配合隔离:确诊或疑似感染时,应遵从医院安排采取接触隔离措施。

  艰难梭菌感染的根源,很大程度上在于肠道微生态的失衡,而抗生素的不当使用正是这一失衡的主要推手。不滥用抗生素、用肥皂和水勤洗手,是预防艰难梭菌感染最简单也最有效的方法。如果您或家人在使用抗生素后出现持续性腹泻、发热、腹痛等症状,请及时前往正规医疗机构就诊——早期识别和规范治疗,是防止病情加重的关键。

  (来源:中国疾控中心微信公众号 作者:传染病所 白璐璐、吴媛) 

【编辑:周驰】

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