Changes in acute myeloid leukaemia (AML) treatment may affect requirement for admission to and treatments in intensive care units (ICUs). We evaluated trends in ICU admission, use of organ support, and 1-year mortality in Danish AML patients. Of 1417 AML patients diagnosed 2005-2016, 28.0% (n=397) were ICU-admitted within 3 years, with no major change in admission rate during the 12-year period. Use of mechanical ventilation and dialysis decreased (66.7% to 40.6%), while use of non-invasive ventilation increased (20.0% to 50.0%). Concurrently, 1-year mortality declined among all patients (36.0% in 2005 to 28.8% in 2016) and ICU-admitted patients (80.0% to 65.6%).