Aim: To evaluate the value of HCO3(-) concentrations in long-term prognosis after acute kidney injury.
Patients & methods: A total of 169 AKI patients were included in this study. At the 12-month follow-up, the patients were divided into recovered and unrecovered groups.
Results: The blood HCO3(-) concentrations were significantly correlated with poor prognosis. The area under the curve for renal prognosis of 6 months later blood HCO3(-) concentrations was 0.798. Combined HCO3(-) and Scr level area under the curve was 0.952.
Conclusion: The blood HCO3(-) level was useful in evaluating renal prognosis of acute kidney injury patients. The combination of blood HCO3(-) concentration and Scr level increased the accuracy of prediction.
Keywords: Cox regression analysis; Kaplan–Meier method; acute kidney injury (AKI); blood HCO3 - concentration; combined markers; follow-up; prevention; receiver operating characteristic–area under the curve; renal prognosis.