Delirium is one of the most frequently seen brain organ dysfunctions in the intensive care unit (ICU). Depending on the ICU population, up to 87% have delirium at some point during their critical illness. Patients with delirium have a 3fold increased risk of dying compared to patients without delirium. Studies could show that sedation is the most common independent risk factor for transitioning to delirium. However, the no-sedation approach is often challenging. ICU patients who are not sedated often develop severe anxiety and agitation. These symptoms are often treated with sedatives that have delirogenic side effects.