Objective To compare the effect of enhanced recovery after surgery (ERAS) protocol and standard treatment on postoperative acute kidney injury (AKI) after abdominal surgery by meta-analysis. Methods Searches were performed in PubMed, Embase, Cochrane Library databases, and reference lists to identify relevant studies that met inclusion criteria from inception to September 2020. The risk ratio (RR), mean difference (MD) and corresponding 95% confidence interval (CI) were used to combine the analysis with random or fixed effect model. The heterogeneity test, sensitivity analysis and publication bias detection were performed according to the combined results. Results A pooled analysis of 15 cohort studies with 10 570 patients was performed. ERAS increased the incidence of AKI after abdominal surgery (RR = 1.34, 95% CI 1.16 to 1.54), but significantly shortened the length of hospital stay (MD = -1.53 days, 95% CI -1.94 to -1.13) compared with the standard care group. There was no significant difference in 30-day readmission rate (RR = 0.87, 95% CI 0.75 to 1.01), 30-day reoperation rate (RR = 0.87, 95% CI 0.60 to 1.27) and mortality rate (RR = 0.82, 95% CI 0.60 to 1.14) between the two groups. Conclusion The ERAS protocol increases the incidence of AKI after abdominal surgery, but it dose not have a relevant adverse prognostic effect, while significantly reducing the length of hospital stay. |