Abstract
Purpose
The elderly are vulnerable to perioperative acute kidney injury. The aim of this study was to determine the risk factors that associated with acute kidney injury among elderly patients.
Methods
Clinical data of elderly patients (> 65 years) who underwent noncardiac, nonrenal surgery between Dec 1 2009 and July 1 2016 were collected for this single-centered historical cohort study. Univariate and multivariate analyses were conducted to explore the risk factors that contribute to acute kidney injury, which was defined as a serum creatinine increase >0.3 mg/dL within 48 h or 1.5 times increase in serum creatinine within 7 days after surgery.
Results
7775 patients were eligible for the final analysis, among which 511 (6.57%) patients developed acute kidney injury. We observed 21 risk factors being associated with perioperative acute kidney injury, with the most important disposing factors being history of kidney disease (adjusted OR = 2.94, 95% CI 2.25–3.84), operation time > 180 min (aOR = 2.93, 95% CI 2.04–4.24), preoperative eGFR [15, 30) (aOR = 2.43, 95% CI 1.29–4.45), and protective factor being intraoperative use of sufentanil (aOR = 0.35, 95% CI 0.23–0.54).
Conclusion
This study determined risk factors for perioperative acute kidney injury among the elderly in the Second Xiangya Hospital and visualized the risk factors using nomogram and Excel calculator, which may provide some clues to further investigations. Overall, the prevalence of AKI among this large cohort is 6.57%.
Clinical trials registration
http://www.chictr.org.cn; ChiCTR1900027007; October 28, 2019.
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Funding
This study was supported by National Key Research and Development Program of China (Grant No. 2018YFC2001902).
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QS, YZ, and BL contributed to all aspects of this manuscript, including study conception, methodology, data acquisition and analysis and drafting the article. LM contributed to the data acquisition and analysis. JX and YC contributed to study conception, project administration, writing—review and editing the manuscript. All authors gave final approval of the version to be published; have agreed on the journal to which the article has been submitted; and agree to be accountable for all aspects of the work.
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The study protocol was approved by the Medical Ethical Committee in the Second Xiangya Hospital (2019K165) and had registered on http://www.chictr.org.cn (No. ChiCTR1900027007; October 28, 2019). All subjects were anonymized so informed consent was not required. The committee waived the need for written informed consent because patients were not subjected to any investigational actions and only patient information relevant to usual care was obtained. This study conformed to the ethical guidelines of the 1975 Declaration of Helsinki and Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) guidelines.
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Sun, Q., Zhao, Y., Liao, B. et al. Risk factors of perioperative acute kidney injury in elderly patients: a single-center retrospective study. Int Urol Nephrol 55, 459–467 (2023). https://doi.org/10.1007/s11255-022-03345-8
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DOI: https://doi.org/10.1007/s11255-022-03345-8