Chronic kidney disease and acute kidney injury in arthroplasty patients over 65 years of age

Background The purpose of this study was to evaluate the prevalence of chronic kidney disease (CKD) and the incidence of perioperative acute kidney injury (AKI) in primary arthroplasty patients over 65 years of age. Risk factors, perioperative events and the outcome of surgery were evaluated. Methods This retrospective, hospital register‐based study consists of patients operated in 2014 in the area of Oulu, Finland. The estimated glomerular filtration rate (eGFR) was calculated using the Chronic Kidney Disease Epidemiology Collaboration formula. The incidence of AKI was evaluated based on the serum creatinine criteria of the KDIGO (Kidney Disease, Improving Global Outcomes) classification. Results Of the 807 patients, 60.8% had mildly decreased (60‐89 ml/min/1.73 m2) and 13.5% moderately to severely decreased eGFR (