Arjen Slooter studied received a PhD in Epidemiology (Erasmus University, Rotterdam, 1998). After his residency in Neurology at UMC Utrecht (1999-2004) and fellowship Intensive Care Medicine (AMC Amsterdam, 2004-2006), he rejoined the UMC Utrecht where he is currently working as consultant neurologist-intensivist at the Department of Intensive Care Medicine. In 2016, he was appointed as Professor in Intensive Care Neuropsychiatry at Utrecht University. Dr Slooter chaired the delirium section of the Society of Critical Care Medicine (SCCM) guidelines on pain, agitation/sedation, delirium, immobility, and sleep disruption, and an international consortium to update nomenclature on delirium and acute encephalopathy. In addition, he is President of the European Delirium Association.

The research focus of Arjen Slooter is on delirium and on neuropsychiatric outcome after anesthesia/surgery or critical illness. Using various methods and approaches (epidemiology, EEG, MRI), he has investigated all aspects of delirium, including its phenomenology and brain network characteristics, detection and monitoring, risk factors, prognosis, prevention and treatment. Research on neuropsychiatric outcomes includes risk factor analysis on cognitive decline, mental illness and chronic pain after critical illness and treatment in the ICU. He has (co-)authored more than 200 scientific papers (PubMed), his Hirsch index (Web of Science) is 49.