Acute renal failure (ARF) has been rebadged as Acute Kidney Injury (AKI) in order to include lesser degrees of renal dysfunction which are prognostically important because:
Early intervention can prevent progression to more severe and longer-lasting kidney injury.
Even minor degrees of AKI in hospital inpatients are associated with higher morbidity and mortality.
Here are some cases to test yourself on. They are aimed at senior medical student/ early post-qualification doctor level. They were written by doctors Vinnie Dolan and John Neary.