Fig. 1.

Flow diagram of patients in the study. a. Numbers of patients admitted in both groups. Numbers of patients excluded due to presence of chronic kidney disease (CKD). Numbers of patients with severity of acute kidney injury (AKI) and with stable AKI, AKI progression or regression at admission, after 24 h of admission and after 48 h of admission. (*) Usual care group: 4 missing AKI stage at admission, 2 stage 0 after 24 h and 2 stage 1 after 24 h. Save the kidney group: 94 missing AKI stage at admission, 24 stage 0 at 24 h, 8 stage 1 at 24 h, 4 stage 2 at 24 h, 2 stage 3 at 24 h and 56 missing AKI stage after 24 h. Usual care group: 55 missing AKI stage at 24 h all remain missing after 48 h. Save the kidney group: 101 missing AKI stage at 24 h, 1 is stage 0 after 48 h, 100 are missing AKI stage at 48 h. b. Number of patients in the control group and STK group with severity of AKI at admission and development over the first 48 h. Green squares indicate improvement in AKI during the first 48 h . Yellow squares indicate stable AKI during the first 48 h. Red squares indicate AKI progression during the first 48 h