Any Role of High-Dose Vitamin C for Septic Shock in 2021?

Any Role of High-Dose Vitamin C for Septic Shock in 2021?
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DOI:
10.1055/s-0041-1733986
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发表时间:
2021-10
影响因子:
3.2
通讯作者:
Sevransky JE
Sevransky JE
中科院分区:
医学3区
文献类型:
--
作者:
Agarwal A;Hager DN;Sevransky JE

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虽然自20世纪50年代以来一直在研究维生素C作为治疗药物的使用,但最近人们对补充维生素C在危重疾病,特别是败血症和感染性休克中的作用产生了浓厚的兴趣。人类不能合成维生素C,依靠外源性摄入维持约70至80 μmol/L的血浆浓度。在健康人群中,维生素C与抗氧化功能、伤口愈合、内皮功能和儿茶酚胺合成有关。维生素C在人体内的功能为补充维生素C可能对败血症/感染性休克有益提供了理论基础。由于饮食摄入量低、代谢需求增加、维生素C代谢物回收效率低下以及肾脏替代治疗导致的维生素C缺乏,危重患者可能缺乏维生素C。静脉补充维生素C需要达到超生理血清水平。虽然一些临床研究表明,静脉补充维生素C治疗败血症在次要结果指标上有所改善,但没有一项随机临床试验显示,在试验的主要结果指标上,补充维生素C与标准护理和/或安慰剂有差异。目前正在进行一些关于高剂量维生素C治疗败血症和2019冠状病毒病患者的研究;到目前为止,大多数证据都不支持败血症或感染性休克患者常规补充维生素C。
While the use of vitamin C as a therapeutic agent has been investigated since the 1950s, there has been substantial recent interest in the role of vitamin C supplementation in critical illness and particularly, sepsis and septic shock. Humans cannot synthesize vitamin C and rely on exogenous intake to maintain a plasma concentration of approximately 70 to 80 μmol/L. Vitamin C, in healthy humans, is involved with antioxidant function, wound healing, endothelial function, and catecholamine synthesis. Its function in the human body informs the theoretical basis for why vitamin C supplementation may be beneficial in sepsis/septic shock. Critically ill patients can be vitamin C deficient due to low dietary intake, increased metabolic demands, inefficient recycling of vitamin C metabolites, and loss due to renal replacement therapy. Intravenous supplementation is required to achieve supraphysiologic serum levels of vitamin C. While some clinical studies of intravenous vitamin C supplementation in sepsis have shown improvements in secondary outcome measures, none of the randomized clinical trials have shown differences between vitamin C supplementation and standard of care and/or placebo in the primary outcome measures of the trials. There are some ongoing studies of high-dose vitamin C administration in patients with sepsis and coronavirus disease 2019; the majority of evidence so far does not support the routine supplementation of vitamin C in patients with sepsis or septic shock.
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