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PPT丨儿童侵袭性A族链球菌疾病诊断专家共识(2025)

  • 2026-11-08 13:35:04
PPT丨儿童侵袭性A族链球菌疾病诊断专家共识(2025)
共识速览
  1. iGAS 定义:iGAS 是由 A 族链球菌(GAS)突破宿主皮肤和黏膜屏障,进入正常无菌组织、器官或体液引发的局部或全身性感染。诊断需基于病原学理念,提供病原学证据。
  2. iGAS 的高危因素:儿童常见危险因素包括水痘、上呼吸道感染、皮肤创伤和手术等;成人则以手术、恶性肿瘤、静脉药物滥用等更为常见。对全年龄段的调查显示,75 岁及以上老年人、新生儿、孕期及产后妇女、感染过水痘或流感的人群是 iGAS 的高危人群。加拿大公共卫生署总结的风险因素还包括慢性病、皮肤开放性创伤、生活环境拥挤或不卫生、药物滥用、免疫缺陷性疾病以及与 GAS 感染或 iGAS 者密切接触等。社区或家庭中有 iGAS 病例是重要的诊断线索,应提高警惕并尽早进行病原学检测。
  3. iGAS 的临床表现:iGAS 临床表现多样,从局部软组织感染到系统性脓毒症都有。感染局部有炎症反应,伴全身中毒症状。早期症状多为发热和流感样症状,但缺少咳嗽流涕等呼吸道卡他症状。深部组织感染或脓毒症患儿会出现器官功能障碍或衰竭。特定临床表现常缺乏特异性,如链球菌中毒性休克综合征(STSS)与葡萄球菌引起的中毒性休克综合征难以区分,坏死性筋膜炎(NF)初期与蜂窝织炎难以区分,且 NF 病情进展迅速。GAS 肺炎病情进展快,并发胸腔积液比率高。其他 iGAS 如脑膜炎、腹膜炎等相对少见,缺乏特异性表现,需病原学检测确诊。
  4. 诊断:根据临床表现类型和病原学证据强度确定 iGAS 诊断及病例分类。临床表现类型符合 iGAS 是基本要求,病原学证据是必要条件。iGAS 对应的国际疾病分类 10 编码涉及多种疾病。病原学证据包括间接证据(如典型猩红热皮疹、密切接触史)和直接证据(细菌分离培养、抗原或核酸检测结果)。iGAS 病例分为疑似病例、可能病例和确诊病例,不同病例分类有相应的诊断依据。
  5. 国内儿童 iGAS 研究报告建议:国内儿科医生应关注 iGAS,尤其在咽扁桃体炎和猩红热流行地区及季节。STSS 和 NF 虽少见,但在 iGAS 诊断和监测中很重要。本共识建议针对 TSS 和 NF 进行疑似病例诊断,但研究总结或报告只包括可能病例和确诊病例。将支气管灌洗液检出 GAS 的肺炎纳入 iGAS 研究范畴。临床实践中应在抗菌药物使用前及时采集标本,积极开展血液等正常无菌标本的病原学检查。
  6. 小结:本共识针对 iGAS 整体概念制定,涉及的具体临床疾病已有诊断标准和治疗方案,本共识不再赘述。希望国内同道积极开展相关研究,积累临床数据,推动儿童 iGAS 防控,同时反馈共识不足之处,以便及时更新。
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  1. CONNECT:[ UseTime:0.000586s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000858s ]
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  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000345s ]
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  6. SELECT * FROM `set` [ RunTime:0.000283s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000703s ]
  8. SELECT * FROM `article` WHERE `id` = 568391 LIMIT 1 [ RunTime:0.000366s ]
  9. UPDATE `article` SET `lasttime` = 1794163425 WHERE `id` = 568391 [ RunTime:0.001449s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000332s ]
  11. SELECT * FROM `article` WHERE `id` < 568391 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000460s ]
  12. SELECT * FROM `article` WHERE `id` > 568391 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000380s ]
  13. SELECT * FROM `article` WHERE `id` < 568391 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000472s ]
  14. SELECT * FROM `article` WHERE `id` < 568391 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000803s ]
  15. SELECT * FROM `article` WHERE `id` < 568391 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000624s ]
0.094738s