Skip to main content

Table 1 Defining renal injury

From: Acute kidney injury: short-term and long-term effects

Renal Injury Description
Acute kidney injury (AKI) Defined according to changes in serum creatinine and urine output, and described as stages 1, 2 and 3
Recurrent kidney injury (RKI) An episode of repeated renal injury following recovery of the index case
Acute kidney disease (AKD) Describes the transition between the acute and chronic states (day 7 post-AKI to day 90)
Chronic kidney disease (CKD) Abnormalities of kidney structure or function for >3 months, with implications for health