Lancet:治疗新型冠状病毒感染,不推荐皮质类固醇

2020-02-08 Paris 转化医学网

导语:随着新型冠状病毒感染的肺炎疫情的发展,糖皮质激素作为应对重症的治疗用药在目前的四版诊疗方案中均被提及,但至今未有临床数据证明其疗效何如。今日,《柳叶刀》发表的文章就此事做出了评论:文章指出目前的临床证据并不支持使用皮质类固醇治疗新冠病毒造成的肺部损伤。

导语:随着新型冠状病毒感染的肺炎疫情的发展,糖皮质激素作为应对重症的治疗用药在目前的四版诊疗方案中均被提及,但至今未有临床数据证明其疗效何如。今日,《柳叶刀》发表的文章就此事做出了评论:文章指出目前的临床证据并不支持使用皮质类固醇治疗新冠病毒造成的肺部损伤。 



此前1月27日,国家卫生委和国家中医药局联合印发的最新版《新型冠状病毒感染的肺炎诊疗方案(试行第四版)》和上一版(第三版)《诊疗方案》相比,该版方案就针对重症患者提出了更多治疗措施。其中,针对重型、危重型病例的治疗,可根据患者呼吸困难程度、胸部影像学进展情况,酌情短期内(3~5天)使用糖皮质激素,建议剂量不超过相当于甲泼尼龙1~2mg/kg·d。

新型冠状病毒感染部分重症患者会并发严重急性呼吸道感染(SARI)并出现急性呼吸窘迫综合征(ARDS),而急性肺损伤和急性呼吸窘迫综合征部分是由宿主免疫反应引起的,皮质类固醇可抑制肺部炎症,但也可抑制免疫反应从而延缓病原体清除。应对 SARS的经验表明,病毒清除后炎症仍然持续存在。SARS 和 MERS 感染中的肺组织学检查也均显示了炎症和弥漫性肺泡损伤。从理论上讲,皮质类固醇激素的治疗可能具有抑制肺部炎症的作用。

在一项回顾性的观察性研究中,报告了309 名患有 MERS 的重症患者,几乎一半的患者被给予皮质类固醇治疗(中位数氢化可的松等效剂量[即,甲基泼尼松龙 1:5,地塞米松 1:25 ,泼尼松龙 1:4] 300 毫克/天)。最终发现,服用皮质类固醇药物治疗后与90天死亡率的差异无关,但与从呼吸道分泌物中清除病毒RNA延迟有关。此外,在2019 年的系统综述和荟萃分析确定了十项流感的观察性研究的共6548 名患者中,研究人员发现,接受皮质类固醇激素治疗的患者死亡率反而增加。且在其他结局中,重症监护病房的住院时间增加了,继发性细菌或真菌感染的发生率也有所提高。

截至 2020 年 1 月 29 日,已发表的报告中包括140 例 2019-nCoV 患者中的七名(5%)感染性休克患者。Baillie博士和他的同事对其临床试验结果进行了分析,在败血性休克试验中,大多数患者都有细菌感染,导致血管性肢体性休克和心肌功能不全。在这一组病例中,重度休克的类固醇治疗有可能获得病情改善。但是,严重低氧血症的休克呼吸衰竭通常是由于胸腔内压力升高(有创通气期间)阻碍了心血管充盈而不是血管痉挛引起的。在这种情况下,类固醇治疗并无大益处。没有临床数据表明在治疗由 RSV,流行性感冒,SARS-CoV 引起的呼吸道感染中,糖皮质激素会有益处。



总体而言,没有明确的证据可以预期患有2019-nCoV 感染的患者将从皮质类固醇治疗中受益,他们反而更有可能从这类疗法中受害。因此,在临床试验之外,不推荐使用皮质类固醇激素治疗 2019-nCoV 引起的肺损伤或休克。

原始出处:

Clark D Russe, Jonathan E Millar, J Kenneth Baillie, et.al. Clinical evidence does not support corticosteroid treatment for 2019-nCoV lung injury. Lancet February 07, 2020

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