Dear Editor
Pediatric delirium (PD) has an estimated incidence of 4–16.9%. Three motoric subtypes are distinguished: hyperactive, hypoactive, and mixed. Current screening scales used are the Delirium Rating Scale, the Pediatric Anesthesia Emergence Delirium Scale, and the pCAM-ICU. These scales are not well suited for the PICU setting, however, either because they have not been validated for this setting or are age inappropriate.
Our group validated the Sophia Observation withdrawal Symptoms scale to assess withdrawal symptoms in critically ill children. [...],
Intensive Care Medicine
Erasmus MC: University Medical Center Rotterdam

van Dijk, M, Knoester, H, van Beusekom, B.S, & Ista, E. (2012). Screening pediatric delirium with an adapted version of the Sophia Observation withdrawal Symptoms scale (SOS). Intensive Care Medicine, 38(3), 531–532. doi:10.1007/s00134-011-243s4-7