Fig. 1

Flow Chart for the diagnosis of delirium. BPS: behavioral pain scale, CAM-ICU: Confusion Assessment Method in the Intensive Care Unit, CT: computed tomography, CSF: cerebrospinal fluid, EEG: electroencephalography, FORTA: Fit for the Aged list, ICDSC: Intensive Care Delirium Screening Checklist, MRI: magnetic resonance imaging, NRS: numeric rating scale, VAS: visual analogue scale