2.2 AKI classification
Patients were classified as “no AKI” or “AKI” based on the Kidney
Disease Improving Global Outcomes (KDIGO) guidelines, which defines AKI
as a ≥ 1.5 times increase in serum creatinine (SCr) versus baseline or
as an increase in SCr ≥ 26.5 µmol L-1. Serum
creatinine concentrations measured at the post timepoint were compared
to those measured at the pre timepoint to classify AKI.