American Psychiatric Association (2000) Diagnostic and statistical manual of mental disorders, 4th edition, text revision. Washington, DC, American Psychiatric Association. 124–127.
Balas, MC et al. (2009) Outcomes associated with delirium in older patients in surgical ICUs. Chest 135(1), 18–25.
Bickel, H et al. (2008) High risk of cognitive and functional decline after postoperative delirium. A three-year prospective study. Dementia and Geriatric Cognitive Disorders 26(1), 26–31.
Boettger, S et al. (2017a) Delirium in the intensive care setting and the Richmond Agitation and Sedation Scale (RASS): Drowsiness increases the risk and is subthreshold for delirium. Journal of Psychosomatic Research 103, 133–139.
Boettger, S et al. (2017b) Delirium in the intensive care setting: A reevaluation of the validity of the CAM-ICU and ICDSC versus the DSM-IV-TR in determining a diagnosis of delirium as part of the daily clinical routine. Palliative and Supportive Care 15(6), 1–9.
Bucht, G, Gustafson, Y, and Sandberg, O (1999) Epidemiology of delirium. Dementia and Geriatric Cognitive Disorders 10, 315–318.
DeVellis, RF (2012) Scale development: Theory and applications. Los Angeles, CA: Sage Publications.
Devlin, JW et al. (2007) Use of a validated delirium assessment tool improves the ability of physicians to identify delirium in medical intensive care unit patients. Critical Care Medicine 35(12), 2721–2724.
Ely, EW et al. (2004) Delirium as a predictor of mortality in mechanically ventilated patients in the intensive care unit. Journal of the American Medical Association 291, 1753–1762.
Gottesman, RF et al. (2010) Delirium after coronary artery bypass graft surgery and late mortality. Annals of Neurology 67(3), 338–344.
Gusmao-Flores, D et al. (2012) The confusion assessment method for the intensive care unit (CAM-ICU) and intensive care delirium screening checklist (ICDSC) for the diagnosis of delirium: a systematic review and meta-analysis of clinical studies. Critical Care 16(4), R115.
Heymann, A et al. (2010) Delayed treatment of delirium increases mortality rate in intensive care unit patients. The Journal of International Medical Research 38(5), 1584–1595.
Inouye, SK, Westendorp, RG, and Saczynski, JS (2014). Delirium in elderly people. Lancet 383(9920), 911–922.
Koster, S, Hensens, AG, and van der Palen, J (2009) The long-term cognitive and functional outcomes of postoperative delirium after cardiac surgery. Annals of Thoracic Surgery 87(5), 1469–1474.
Lahariya, S et al. (2016) Phenomenology of delirium among patients admitted to a coronary care unit. Nordic Journal of Psychiatry 70(8), 626–632.
Marquis, F et al. (2007) Individual delirium symptoms: Do they matter? Critical Care Medicine 35, 2533–2537.
Meagher, DJ and Trzepacz, P (2009) Delirium. In Oxford textbook of psychiatry. Gelder, M, Andreasen, N, Lopez-Ibor, JJ, et al. (eds.), pp. 325–332. Oxford, UK: Oxford University Press.
Neufeld, KJ et al. (2013) Evaluation of two delirium screening tools for detecting post-operative delirium in the elderly. British Journal of Anaesthesia 111(4), 612–618.
Norkiene, I et al. (2007) Incidence and precipitating factors of delirium after coronary artery bypass grafting. Scandinavian Cardiovascular Journal 41, 180–185.
Ouimet, S et al. (2007) Incidence, risk factors and consequences of ICU delirium. Intensive Care Medicine 33, 66–73.
Pun, BT and Ely, EW (2007) The importance of diagnosing and managing ICU delirium. Chest 132, 624–636.
Rosen, SF et al. (2002) Transient advanced mental impairment: an underappreciated morbidity after aortic surgery. Journal of Vascular Surgery 35(2), 376–381.
Santos, FS, Velasco, IT, and Fraguas, R Jr (2004) Risk factors for delirium in the elderly after coronary artery bypass graft surgery. International Psychogeriatrics 16(2), 175–193.
Sessler, CN et al. (2002) The Richmond Agitation-Sedation Scale: Validity and reliability in adult intensive care unit patients. American Journal of Respiratory and Critical Care Medicine 166, 1338–1344.
Sharma, A et al. (2012) Incidence, prevalence, risk factor and outcome of delirium in intensive care unit: A study from India. General Hospital Psychiatry 34(6), 639–646.
Trzepacz, PT et al. (1999) Practice guideline for the treatment of patients with delirium. American Psychiatric Association. American Journal of Psychiatry 156, 1–20.
van Eijk, MM et al. (2009) Comparison of delirium assessment tools in a mixed intensive care unit. Critical Care Medicine 37(6), 1881–1885.