The following endpoints were defined: in-hospital death (endpoint 1), the need for KRT (endpoint 2), and recovery of kidney function until discharge (endpoint 3). The need for KRT was fulfilled if a patient required at least one extracorporal procedure. Extracorporal therapy was initiated, if patients presented one or more of the following criteria: refractory hyperhydration including progressive dyspnea, refractory hyperkalemia of 6.5 mmol/L or above, refractory metabolic acidosis with a pH of 7.1 or below, neurological symptoms due to suspected uremia. KRT was either performed as intermittent hemodialysis, or slow extended daily dialysis (SLEDD), or continuous veno-venous hemodialysis. Recovery of kidney function was diagnosed if the last eGFR (CKD-EPI [12 (link)]) differed from the initial eGFR by no more than 10%. Data on endpoints 1 and 2 were available from all patients, and data on endpoint 3 were missing in 50 subjects.