Acute kidney injury (AKI) was defined by the AKI Network (AKIN) as an abrupt (within 48 h) reduction in kidney function with an absolute increase in serum creatinine of ≥0.3 mg/dl, a percentage increase of serum creatinine ≥50%, or a reduction in urine output (oliguria <0.5 ml/kg/h) (1). The use of these AKI Network criteria was recommended in the Valve Academic Research Consortium-2 document (2) and are now well accepted in the interventional community, allowing a uniform diagnosis of this complex disorder, whose definition has evolved over the past decade.
Kefer, J. (2018). Left Atrial Appendage: Unsuspected Connection With the Kidneys. JACC : Cardiovascular Interventions, 11(11), 1084-1085. https://doi.org/10.1016/j.jcin.2018.02.005 (Original work published 2018)