RÉSUMÉ
Objective To describe the status of duration of ICU delirium and to analyze its influencing factors.Methods We studied patients who were delirium positive from April 2016 to January 2017 in ICU in Peking Union Medical College Hospital.We collected general information and clinical information including mechanical ventilation,usage of sedation,analgesia and antipsychotics,hypoxia,infection,internal environment and types of delirium after initial onset of delirium.We also recorded management of delirium patients until resolution of delirium or patients were discharged from ICU.We analyzed data by Kaplan-Meier single factor analysis and Cox multiple-factors analysis.Results The average duration of ICU delirium was(5.06±4.59) days.APACHE Ⅱ score(x2=4.670,P=0.031),persistent delirium or not(x2=5.801,P=0.016),duration of hypoxia(x2=14.438,P＜0.001),and duration of usage of antipsychotics(x2=13.360,P＜0.001)were influencing factors of delirium duration.Conclusion Duration of ICU delirium has huge variation.To decrease duration of ICU delirium and improve outcomes of patients,medical workers should pay attention to patients with high APACHE score,persistent delirium and hypoxia,and be cautious when using antipsychotics.