Association between inflammatory biomarkers and postoperative acute kidney injury after cardiac surgery in patients with preoperative renal dysfunction: a retrospective pilot analysis.

IF 1.5 4区 医学 Q3 CARDIAC & CARDIOVASCULAR SYSTEMS Journal of Cardiothoracic Surgery Pub Date : 2024-10-03 DOI:10.1186/s13019-024-03067-1
Wuhua Jiang, Yi Fang, Xiaoqiang Ding, Zhe Luo, Dong Zhang, Xialian Xu, Jiarui Xu
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Abstract

Background: Acute kidney injury (AKI) represents a significant post-cardiac surgery complication, particularly prevalent among individuals with pre-existing renal dysfunction. Chronic kidney disease (CKD) is frequently accompanied by persistent, low-grade inflammation, which is known to exacerbate systemic stress responses during surgical procedures. This study hypothesizes that these inflammatory responses might influence the incidence and severity of postoperative acute kidney injury (AKI), potentially serving as a protective mechanism by preconditioning the kidney to stress.

Methods: This retrospective study enrolled patients with preoperative renal dysfunction (eGFR between 15 and 60 ml/min/1.73 m²) who underwent cardiac surgery between January 2020 and December 2022. Preoperative inflammatory biomarkers were evaluated. The primary outcome was the incidence of postoperative AKI, as defined by the Kidney Disease: Improving Global Outcomes (KDIGO) criteria. Multivariate regression models and sensitivity analyses were conducted to ascertain the relationship between inflammatory biomarkers and AKI. Restricted cubic spines (RCS) was conducted to explore nonlinear associations between inflammatory biomarkers and AKI.

Results: AKI occurred in 53.4% (392/734) of patients, accompanied by significant mortality and length of hospital stay increases in cases of AKI (P < 0.005). After full adjustment of confounders, neutrophil percentage-to-albumin ratio (OR = 0.28), systemic inflammation response index (OR = 0.70), systemic immune inflammation index (OR = 0.69), neutrophil-to-lymphocyte ratio (OR = 0.70), monocyte/high-density lipoprotein cholesterol ratio (OR = 0.53), neutrophil/high-density lipoprotein cholesterol ratio (OR = 0.43) demonstrated an inverse association with AKI. Sensitivity analyses revealed that patients in the highest quartile of these biomarkers exhibited a significantly lower prevalence of AKI compared to those in the lowest quartile (p for trend < 0.05). The RCS analysis suggested an "Inverted U-shaped" association of both LnNPAR and LnSIRI with AKI.

Conclusions: This study identified an inverse association between preoperative inflammatory biomarkers and postoperative AKI in patients with preoperative renal dysfunction. The findings implied that preoperative inflammation may play a protective role against postoperative AKI in this patient population undergoing cardiac surgery.

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术前肾功能不全患者心脏手术后炎症生物标志物与术后急性肾损伤之间的关系:一项回顾性试验分析。
背景:急性肾损伤(AKI)是心脏手术后的一种重要并发症,在原有肾功能不全的患者中尤为普遍。慢性肾脏病(CKD)经常伴有持续的低度炎症,众所周知,炎症会加剧手术过程中的全身应激反应。本研究假设,这些炎症反应可能会影响术后急性肾损伤(AKI)的发生率和严重程度,有可能通过对肾脏进行应激预处理而成为一种保护机制:这项回顾性研究纳入了 2020 年 1 月至 2022 年 12 月期间接受心脏手术的术前肾功能不全(eGFR 在 15 至 60 毫升/分钟/1.73 平方米之间)患者。对术前炎症生物标志物进行了评估。主要结果是术后 AKI 的发生率,根据肾脏疾病:改善全球预后 (KDIGO) 标准定义的术后 AKI 发生率。为确定炎症生物标志物与 AKI 之间的关系,进行了多变量回归模型和敏感性分析。为了探索炎症生物标志物与 AKI 之间的非线性关系,还进行了限制性立方棘(RCS)分析:53.4%的患者(392/734)发生了 AKI,AKI 病例的死亡率和住院时间显著增加(P 结论:该研究发现了炎症生物标志物与 AKI 之间的反向关系:本研究发现,术前肾功能不全的患者术前炎症生物标志物与术后 AKI 呈反向关系。研究结果表明,术前炎症可能对接受心脏手术的这类患者的术后 AKI 起保护作用。
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来源期刊
Journal of Cardiothoracic Surgery
Journal of Cardiothoracic Surgery 医学-心血管系统
CiteScore
2.50
自引率
6.20%
发文量
286
审稿时长
4-8 weeks
期刊介绍: Journal of Cardiothoracic Surgery is an open access journal that encompasses all aspects of research in the field of Cardiology, and Cardiothoracic and Vascular Surgery. The journal publishes original scientific research documenting clinical and experimental advances in cardiac, vascular and thoracic surgery, and related fields. Topics of interest include surgical techniques, survival rates, surgical complications and their outcomes; along with basic sciences, pediatric conditions, transplantations and clinical trials. Journal of Cardiothoracic Surgery is of interest to cardiothoracic and vascular surgeons, cardiothoracic anaesthesiologists, cardiologists, chest physicians, and allied health professionals.
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