Preoperative inflammatory mediators and postoperative delirium: systematic review and meta-analysis

被引:79
作者
Noah, Abiodun M. [1 ]
Almghairbi, Dalal [1 ,2 ]
Evley, Rachel [1 ]
Moppett, Iain K. [1 ]
机构
[1] Univ Nottingham, Acad Unit Injury Inflammat & Recovery Sci, Anaesthesia & Crit Care, Nottingham, England
[2] Univ Zawia, Dept Anaesthesia & Crit Care, Zawiya, Libya
关键词
cytokines; delirium; inflammatory markers; neuroinflammation; older people; postoperative delirium; GROWTH-FACTOR-I; CANCER-PATIENTS; PREDICTS DELIRIUM; ELDERLY-PATIENTS; OLDER PATIENTS; SURGERY; RISK; NEUROINFLAMMATION; INTERLEUKIN-6; ASSOCIATION;
D O I
10.1016/j.bja.2021.04.033
中图分类号
R614 [麻醉学];
学科分类号
100217 ;
摘要
Background: Postoperative delirium has eluded attempts to define its complex aetiology and describe specific risk factors. The role of neuroinflammation as a risk factor, determined by measuring blood levels of preoperative 'innate' inflammatory mediator levels, has been investigated. However, results have been conflicting. We conducted a systematic review and meta-analysis of the evidence on associations between preoperative blood levels of inflammatory mediators and postoperative delirium in the older person. Influence of type of surgery was also assessed. Methods: Original, low risk of bias studies, published in peer-reviewed journals, which fulfilled the eligibility criteria were included. Seventeen articles fulfilled study criteria. Data extraction, synthesis, and risk of bias analysis were guided by Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) and quality in prognostic studies guidelines. Meta-analyses used a random-effects model. Inflammatory mediators included C-reactive protein, interleukin-6, -8, and -10, tumour necrosis factor-alpha, insulin-like growth factor-1, cortisol, and neopterin. Surgical groups were cardiac, noncardiac, and hip fracture. Results: Higher preoperative interleukin-6 was associated with postoperative delirium with a standardised mean difference (95% confidence interval) of 0.33 (0.11-0.56) and P=0.003. Higher neopterin was also associated with postoperative delirium. Conclusions: The association of preoperative blood levels of inflammatory mediators with postoperative delirium may be influenced by the type of surgery and the specific mediator. The potential modulating effect of type of surgery, intrinsic brain vulnerability, and the complex interactions between inflammatory mediators and binding proteins will need to be considered in future studies.
引用
收藏
页码:424 / 434
页数:11
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