title: Outcomes after delirium in a Japanese intensive care unit.
abstract: OBJECTIVE
  Delirium in the intensive care unit (ICU) is recognized as a major public health problem. Few Japanese outcome studies have been reported. The purpose of the study was to investigate the hospital outcomes of ICU delirium in a Japanese general hospital.
  
  
  METHODS
  Patients were drawn from consecutive admissions to an ICU at a tertiary care university hospital. Delirium assessments were conducted using the Intensive Care Delirium Screening Checklist (ICDSC). The following information was recorded: age, sex, the reason for ICU admission, the ICDSC scores, the COmplexity PRediction Instrument (COMPRI) scores, the length of stay (LOS) in the ICU, the total hospital LOS, hospital outcomes and social worker's consultation.
  
  
  RESULTS
  Of the 126 patients who were evaluated, 35 (27.8%) developed delirium during the ICU stay. Older age and biopsychosocial vulnerability assessed by the COMPRI were risk factors of ICU delirium. ICU delirium was a predictor of increased mortality and associated with prolonged ICU and hospital LOS. ICU delirium was an independent risk factor for having social worker's consultation after ICU discharge.
  
  
  CONCLUSIONS
  ICU delirium is associated with worse outcomes including mortality and LOS in Japan. ICU delirium is independently associated with further social worker's consultations, suggesting that early proactive social worker's intervention may be beneficial for the patients with ICU delirium.
authors.affiliation: Department of Nursing, Nippon Medical School Musashikosugi Hospital, Kawasaki-city, Kanagawa, Japan. Electronic address: takakoy8989@yahoo.co.jp.
authors.forename: Takako
authors.initials: T
authors.lastname: Yamaguchi
authors.affiliation: Department of Nursing, Nippon Medical School Musashikosugi Hospital, Kawasaki-city, Kanagawa, Japan. Electronic address: jeepnotyetet@yahoo.co.jp.
authors.forename: Etsuko
authors.initials: E
authors.lastname: Tsukioka
authors.affiliation: Department of Psychiatry, Nippon Medical School Musashikosugi Hospital, Kawasaki-city, Kanagawa, Japan. Electronic address: yk1228@gmail.com.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Kishi
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D003693:Delirium / Q000453:epidemiology*; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D007362:Intensive Care Units; D007564:Japan; D007902:Length of Stay / Q000706:statistics & numerical data*; D016015:Logistic Models; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D011183:Postoperative Complications / Q000453:epidemiology*; D012017:Referral and Consultation / Q000706:statistics & numerical data; D012307:Risk Factors; D012948:Social Work Department, Hospital / Q000706:statistics & numerical data*
keywords: Delirium; Intensive care unit; Length of stay; Risk factors; Social worker