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Intravenous Amino Acids for Kidney Protection in Patients Undergoing Cardiac Surgery: A Systematic Review and Meta-analysis of Randomized Controlled Trials

Abstract

Objective: To evaluate the efficacy of intravenous (IV) amino acids in preventing acute kidney injury (AKI) in patients undergoing cardiac surgery.

Methods: PubMed, EMBASE, and Cochrane Library databases were systematically searched for all relevant randomised controlled trials (RCTs) published from inception to July 25, 2024. A random effects model was used to pool the risk ratios (RR) for dichotomous outcomes, and the combined data was visually represented using forest plots.

Results: 3 studies involving 3646 patients were included in the meta-analysis. IV amino acids did not significantly lower the overall AKI incidence compared with control measures. However, they significantly reduced the risk of Stage 1 AKI and Stage 3 AKI. No differences were observed between intervention and control for Stage 2 AKI or need for kidney replacement therapy.

Conclusion: IV amino acids may offer protective benefits against severe AKI stages in cardiac surgery patients. Further studies are warranted to validate our findings.

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