Data collection
The following ICU course data were collected: patient demographics, primary oncologic diagnosis, type and number of transplants, Pediatric Risk of Mortality (PRISM) score, use of invasive mechanical ventilation (IMV) or positive pressure ventilation, vasopressor support, duration of IMV and CKRT course, ICU survival, and liberation from CKRT/further kidney replacement therapy (KRT). Daily fluid balance and urine output before, during, and after CKRT courses were recorded. In addition, daily laboratory data were recorded including basic metabolic profile, bilirubin, albumin, ammonia, liver function tests, prothrombin time, C-reactive protein (CRP), white blood count, and platelet count.