TY - CHAP M1 - Book, Section TI - ICU Delirium A1 - Rozenfeld, Ranna A. Y1 - 2018 N1 - T2 - The PICU Handbook AB - Delirium: A form of acute and fluctuating global cerebral dysfunction caused by the direct physiologic consequences of a general medication condition and characterized by disturbances in attentiveness and awareness and cognitive impairment affecting memory, cerebral orientation, language, perception, and/or visual or auditory hallucinations. Four current subtypes exist:Hyperactive: The “classic” form of delirium and intensive care unit psychosis featuring episodic or progressive agitation, restlessness, hallucinations, delusions, and/or emotional lability. Most easily recognized subtype by providers and family members.Hypoactive: Can also be referred to as “encephalopathy of critical illness” with decreased responsiveness, blunted levels of consciousness, quiet confusion, and apathy. Oftentimes can be confused with depressive symptoms or acute stress disorders.Mixed: Waxing and waning occurrences of both hyperactive and hypoactive delirium throughout its fluctuating course.Subacute: Usually related to an indolent, progressive medical condition over time with occasional occurrences of either hyperactive delirium or hypoactive delirium or both that is not defined by an additional psychiatric diagnosis. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/28 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1152488404 ER -