Delirium in intensive care unit (ICU) settings is a frequent complication with reported prevalence of 31%. Recent data has revealed the connection between delirium and increased 30days mortality after hospital release and the higher incidence of readmission to emergency. Despite the high prevalence and well described validation methods for screening, the precise incidence remains unclear due to insufficient screening in ICU settings. The incidence of delirium in Czech Republic remains undescribed, beside data reported from neurointensive care patients and single-center general critically ill patients data.

All patients fulfilling inclusion criteria in intensive care settings in involved ICUs in Czech Republic will be included into the study. Data will be recorded for 1 consequent month. Basic demography will be evaluated. In each patient standard delirium screening based on the institutional ICU rules will be performed. If no screening method were set,Confusion Assessment Method - CAM-ICU for adult and pediatric Confusion Assessment Method -pCAM-ICU for pediatric patients would be used together with delirium management, restrain procedures, sedative/neuroleptics administration, 28-days mortality. All data will be recorded into to predefined eCRF.

Inclusion Criteria:

• Patients in ICU settings
• in defined time interval of the study

Exclusion Criteria:

• duration of ICU stay shorter than 24 hours

ICU patients