Ueno K, et al. - This study entailed validation of acute kidney injury (AKI), including its incidence, risk factors, and postoperative outcomes, according to the modified Kidney Disease Improving Global Outcomes (m-KDIGO) criteria. Also, researchers compared this criterion with both the pediatric Risk, Injury, Failure, Loss, End-stage disease (pRIFLE) and Acute Kidney Injury Network (AKIN) criteria in infants after cardiac surgery. Different AKI incidences were noted by applying the 3 criteria, but each criterion could be useful for detecting risk factors for AKI. More important subsequent postoperative outcomes were afforded by the use of m-KDIGO criteria. The m-KDIGO AKI criteria described clinically relevant AKI in infants after cardiac surgery.