. Désorganisation-de-la-pensée-16, Troubles de la mémoire 17 Ralentissement psychomoteur L'outil diagnostique de la confusion, la CAM, était inconnu pour 74% des médecins (n=14) Seuls deux urgentistes (11%)

C. La and . Trop-compliquée-pour-un-médecin, obsolète pour un autre, trop longue pour un 3 e , et enfin un médecin connaissait son existence mais n'avait pas été sensibilisé à son utilisation

L. Lewis, D. Miller, J. Morley, M. Nork, and L. Lasater, Unrecognized delirium in ED geriatric patients, The American Journal of Emergency Medicine, vol.13, issue.2, pp.142-147, 1995.
DOI : 10.1016/0735-6757(95)90080-2

J. Han, E. Zimmerman, N. Cutler, J. Schnelle, A. Morandi et al., Delirium in Older Emergency Department Patients: Recognition, Risk Factors, and Psychomotor Subtypes, Academic Emergency Medicine, vol.53, issue.3, pp.193-200, 2009.
DOI : 10.1111/j.1553-2712.2008.00339.x

R. Kakuma, G. Fort, L. Arsenault, A. Perrault, R. Platt et al., Delirium in Older Emergency Department Patients Discharged Home: Effect on Survival, Journal of the American Geriatrics Society, vol.40, issue.4, 2003.
DOI : 10.1046/j.1532-5415.2003.51151.x

F. Hustey and S. Meldon, The prevalence and documentation of impaired mental status in elderly emergency department patients, Annals of Emergency Medicine, vol.39, issue.3, pp.248-53, 2002.
DOI : 10.1067/mem.2002.122057

M. Élie, F. Rousseau, M. Cole, F. Primeau, J. Mccusker et al., Prevalence and detection of delirium in elderly emergency department patients, Can Med Assoc J, vol.163, issue.8, pp.977-81, 2000.

S. Inouye, S. Bogardus, P. Charpentier, L. Leo-summers, D. Acampora et al., A Multicomponent Intervention to Prevent Delirium in Hospitalized Older Patients, New England Journal of Medicine, vol.340, issue.9, pp.669-76, 1999.
DOI : 10.1056/NEJM199903043400901

H. Agency, . Research, and . Quality, National quality clearinghouse measure: delirium: proportion of patients meeting diagnostic criteria on the confusion assessment method (CAM). [cited, 2014.

F. Sellal and J. Michel, Syndrome confusionnel, EMC - Neurologie, vol.8, issue.3, pp.17-023, 2011.
DOI : 10.1016/S0246-0378(11)57577-3

J. Chadwin and W. Mann, The medical works of Hippocrates. Oxf BLackwell, 1950.

C. Lase?-gue, Le Deíire alcoolique n'est pas un deíire mais un re? ve, Arch Gén Méd, vol.80, pp.5-28, 1881.

P. Chaslin, La Confusion Mentale Primitive, The American Journal of Psychology, vol.7, issue.2, 1985.
DOI : 10.2307/1411596

. American-psychiatric-association, Delirium, démence, troubles amnésiques et autres troubles cognitifs, DSM-IV-TR. Manuel diagnostique et statistique des troubles mentaux, pp.157-77, 2004.

H. Autorité-de and L. Santé, Confusion aiguë chez la personne âgée -Argumentaire et Recommandations [Internet], 2014.

B. Hart, DELIRIOUS STATES, BMJ, vol.2, issue.3954, pp.745-754, 1936.
DOI : 10.1136/bmj.2.3954.745

D. Taylor and L. S. Delirium, Delirium., Journal of Neurology, Neurosurgery & Psychiatry, vol.56, issue.7, p.742, 1993.
DOI : 10.1136/jnnp.56.7.742

P. Trzepacz, The Neuropathogenesis of Delirium, Psychosomatics, vol.35, issue.4, pp.374-91, 1994.
DOI : 10.1016/S0033-3182(94)71759-X

P. Trzepacz and . Delirium, Advances in Diagnosis, Pathophysiology, and Treatment. Psychiatr Clin North Am, pp.429-477, 1996.

P. Trzepacz, Is there a final common neural pathway in delirium? Focus acthylcholine and dopamine, Semin Clin Neuropsychiatry, vol.5, issue.2, pp.132-180, 2000.

J. Coffman and S. Dilsaver, Cholinergic mechanisms in delirium, Am J Psychiatry, vol.145, issue.3, pp.382-385, 1988.

L. Tune, N. Dainloth, and A. Holland, Association of postoperative deliriuer they can manage the care of persons with mental health needs and resist the temptation to manage only the financial risk. Organizations that successfully addresm with raised serum levels of anticholinergic drugs, Lancet, vol.2, pp.651-653, 1981.

P. Broderick and G. Gibson, Dopamine and serotonin in rat striatum during in vivo hypoxichypoxia . Metab Brain Dis, pp.143-53, 1989.

G. Gibson, R. Jope, and J. Blass, Decreased synthesis of acetylcholine accompanying impaired oxidation of pyruvic acid in rat brain minces, Biochemical Journal, vol.148, issue.1, pp.17-23, 1975.
DOI : 10.1042/bj1480017

D. Ames and W. , Organic mental disorders associated with bupropion in three patients, J Clin Psychiatry, vol.53, issue.2, pp.53-58, 1992.

T. Javelot, H. Javelot, A. Baratta, L. Weiner, M. Messaoudi et al., Acute psychotic disorders related to bupropion: review of the literature]. L'Encéphale, pp.461-71, 2010.

E. Ongini and M. , Stimulation of dopamine D-1 receptors by SKF 38393 induces EEG desynchronization and behavioral arousal, Life Sciences, vol.37, issue.24, pp.2327-2360, 1986.
DOI : 10.1016/0024-3205(85)90025-6

T. Itil and M. Fink, ANTICHOLINERGIC DRUG-INDUCED DELIRIUM, The Journal of Nervous and Mental Disease, vol.143, issue.6, pp.492-507, 1966.
DOI : 10.1097/00005053-196612000-00005

C. Fox, K. Richardson, I. Maidment, G. Savva, F. Matthews et al., Anticholinergic Medication Use and Cognitive Impairment in the Older Population: The Medical Research Council Cognitive Function and Ageing Study, Journal of the American Geriatrics Society, vol.9, issue.8, pp.1477-83, 2011.
DOI : 10.1111/j.1532-5415.2011.03491.x

T. Stern, Continuous infusion of physostigmine in anticholinergic delirium: case report, J Clin Psychiatry, vol.44, issue.12, pp.463-467, 1983.

C. Hughes, M. Patel, and P. Pandharipande, Pathophysiology of acute brain dysfunction, Current Opinion in Critical Care, vol.18, issue.5, pp.518-544, 2012.
DOI : 10.1097/MCC.0b013e328357effa

W. Van-gool, D. Van-de-beek, and P. Eikelenboom, Systemic infection and delirium: when cytokines and acetylcholine collide, The Lancet, vol.375, issue.9716, pp.773-778, 2010.
DOI : 10.1016/S0140-6736(09)61158-2

D. Mathers, The GABAA receptor: New insights from single-channel recording, Synapse, vol.344, issue.1, pp.96-101, 1987.
DOI : 10.1002/syn.890010113

N. Akaike, T. Shirasaki, and T. Yakushiji, Quinolones and fenbufen interact with GABAA receptor in dissociated hippocampal cells of rat, J Neurophysiol, vol.66, issue.2, pp.497-504, 1991.

K. Mergenhagen and S. Arif, Delirium in the Elderly: Medications, Causes, and Treatment, US Pharm [Internet], 2008.

R. Van-der-mast, D. Fekkes, and W. Van-den-broek, Reduced cerebral tryptophan availability as a possible cause for post-cardiotomy delirium, Psychosomatics, vol.35, p.195, 1994.

H. Meltzer, P. Gram, D. Balant, P. Meltzer, and P. Dahl, Serotonin Receptors and Antipsychotic Drug Action, Clinical Pharmacology in Psychiatry [Internet]
DOI : 10.1007/978-3-642-78010-3_7

J. Monti, Involvement of histamine in the control of the waking state, Life Sciences, vol.53, issue.17, pp.1331-1339, 1993.
DOI : 10.1016/0024-3205(93)90592-Q

M. Marzanatti, A. Monopoli, M. Trampus, and E. Ongini, Effects of nonsedating histamine H1-antagonists on EEG activity and behavior in the cat, Pharmacology Biochemistry and Behavior, vol.32, issue.4, 1989.
DOI : 10.1016/0091-3057(89)90049-X

C. Tejera, S. Saravay, E. Goldman, and L. Gluck, Diphenhydramine-Induced Delirium in Elderly Hospitalized Patients With Mild Dementia, Psychosomatics, vol.35, issue.4, pp.399-402, 1994.
DOI : 10.1016/S0033-3182(94)71762-X

J. Jones, J. Dougherty, and L. Cannon, Diphenhydramine-induced toxic psychosis, The American Journal of Emergency Medicine, vol.4, issue.4, pp.369-71, 1986.
DOI : 10.1016/0735-6757(86)90312-8

P. Williams and D. Helton, The proconvulsive activity of quinolone antibiotics in an animal model, Toxicology Letters, vol.58, issue.1, pp.23-31, 1991.
DOI : 10.1016/0378-4274(91)90186-A

G. Stefano, T. Bilfinger, and G. Fricchione, The immune-neuro-link and the macrophage: Postcardiotomy delirium, HIV-associated dementia and psychiatry, Progress in Neurobiology, vol.42, issue.4, 1994.
DOI : 10.1016/0301-0082(94)90048-5

S. Hopkins and N. Rothwell, Cytokines and the nervous system. I: Expression and recognition. Trends Neurosci, Feb, vol.18, issue.2, pp.83-91, 1995.

N. Rothwell and S. Hopkins, Cytokines and the nervous system II: actions and mechanisms of action, Trends in Neurosciences, vol.18, issue.3, pp.130-136, 1995.
DOI : 10.1016/0166-2236(95)93890-A

R. Jalleh, K. Koh, B. Choi, E. Liu, J. Maddison et al., Role of microglia and toll-like receptor 4 in the pathophysiology of delirium. Med Hypotheses, pp.735-744, 2012.

J. Fann, The epidemiology of delirium: a review of studies and methodological issues, Semin Clin Neuropsychiatry, vol.5, issue.2, pp.64-74, 2000.

S. Inouye, R. Westendorp, and J. Saczynski, Delirium in elderly people. The Lancet [Internet], p.0140673613606881, 2013.

B. Naughton, M. Moran, H. Kadah, and J. Longano, Delirium and Other Cognitive Impairment in Older Adults in an Emergency Department, Annals of Emergency Medicine, vol.25, issue.6, pp.751-756, 1995.
DOI : 10.1016/S0196-0644(95)70202-4

A. Sanders, Missed delirium in older emergency department patients: A quality-of-care problem, Annals of Emergency Medicine, vol.39, issue.3, pp.338-379, 2002.
DOI : 10.1067/mem.2002.122273

D. Liang, Diagnosis and Management of Delirium in the Elderly, Hosp Physician, vol.37, 1999.

J. Francis, D. Martin, and W. Kapoor, A prospective study of delirium in hospitalized elderly, JAMA. Feb, vol.23263, issue.8, pp.1097-101, 1990.

P. Pompei, M. Foreman, M. Rudberg, S. Inouye, V. Braund et al., Delirium in Hospitalized Older Persons: Outcomes and Predictors, Journal of the American Geriatrics Society, vol.147, issue.Suppl, pp.809-824, 1994.
DOI : 10.1111/j.1532-5415.1994.tb06551.x

O. Keeffe, S. Tormey, W. Glasgow, R. Lavan, and J. , Thiamine Deficiency in Hospitalized Elderly Patients, Gerontology, vol.40, issue.1, pp.18-24, 1994.

P. Trzepacz and J. Francis, Low serum albumin levels and risk of delirium, Am J Psychiatry, vol.147, issue.5, p.675, 1990.

M. Foreman, Confusion in the hospitalized elderly, Dimensions Of Critical Care Nursing, vol.9, issue.1, pp.21-30, 1989.
DOI : 10.1097/00003465-199001000-00010

Y. Gustafson, D. Berggren, B. Brännström, G. Bucht, A. Norberg et al., Acute Confusional States in Elderly Patients Treated for Femoral Neck Fracture, Journal of the American Geriatrics Society, vol.7, issue.5, 1988.
DOI : 10.1111/j.1532-5415.1988.tb04023.x

S. Inouye, D. Wagner, D. Acampora, R. Horwitz, L. Cooney et al., A predictive index for functional decline in hospitalized elderly medical patients, Journal of General Internal Medicine, vol.322, issue.12, 1993.
DOI : 10.1007/BF02598279

S. Levkoff, C. Safran, P. Cleary, J. Gallop, and R. Phillips, Identification of Factors Associated with the Diagnosis of Delirium in Elderly Hospitalized Patients, Journal of the American Geriatrics Society, vol.35, issue.3, 1988.
DOI : 10.1111/j.1532-5415.1988.tb04396.x

M. Elie, M. Cole, F. Primeau, and F. Bellavance, Delirium risk factors in elderly hospitalized patients, Journal of General Internal Medicine, vol.43, issue.1, pp.204-216, 1998.
DOI : 10.1046/j.1525-1497.1998.00047.x

S. Inouye, C. Viscoli, R. Horwitz, L. Hurst, and M. Tinetti, A Predictive Model for Delirium in Hospitalized Elderly Medical Patients Based on Admission Characteristics, Annals of Internal Medicine, vol.119, issue.6, 1993.
DOI : 10.7326/0003-4819-119-6-199309150-00005

S. Inouye, Delirium in Older Persons, New England Journal of Medicine, vol.354, issue.11, pp.1157-65, 2006.
DOI : 10.1056/NEJMra052321

S. Inouye and P. Charpentier, Precipitating factors for delirium in hospitalized elderly persons. Predictive model and interrelationship with baseline vulnerability, JAMA: The Journal of the American Medical Association, vol.275, issue.11, pp.852-859, 1996.
DOI : 10.1001/jama.275.11.852

J. Flaherty, J. Rudolph, K. Shay, B. Kamholz, K. Boockvar et al., Delirium is a Serious and Under-recognized Problem: Why Assessment of Mental Status Should be the Sixth Vital Sign, Journal of the American Medical Directors Association, vol.8, issue.5, pp.273-278, 2007.
DOI : 10.1016/j.jamda.2007.03.006

V. Khurana, I. Gambhir, and D. Kishore, Evaluation of delirium in elderly: A hospital-based study, Geriatrics & Gerontology International, vol.9, issue.4, pp.467-73, 2011.
DOI : 10.1111/j.1447-0594.2011.00710.x

K. Rockwood, Causes of delirium, Psychiatry, vol.7, issue.1, pp.39-41, 2008.
DOI : 10.1016/j.mppsy.2007.11.003

L. Caeiro, J. Ferro, M. Claro, J. Coelho, R. Albuquerque et al., Delirium in acute stroke: a preliminary study of the role of anticholinergic medications, European Journal of Neurology, vol.21, issue.10, pp.699-704, 2004.
DOI : 10.1159/000017167

L. Tune and S. Egeli, Acetylcholine and Delirium, Dementia and Geriatric Cognitive Disorders, vol.10, issue.5, 1999.
DOI : 10.1159/000017167

L. Tune, Anticholinergic effects of medication in elderly patients, J Clin Psychiatry, vol.62, pp.11-15, 2001.

J. Schor, S. Levkoff, L. Lipsitz, C. Reilly, P. Cleary et al., Risk factors for delirium in hospitalized elderly, JAMA J Am Med Assoc Feb, vol.12267, issue.6, pp.827-858, 1992.

T. Rahkonen, H. Mäkelä, S. Paanila, P. Halonen, J. Sivenius et al., Delirium in Elderly People Without Severe Predisposing Disorders: Etiology and 1-Year Prognosis After Discharge, International Psychogeriatrics, vol.12, issue.4, pp.473-81, 2000.
DOI : 10.1017/S1041610200006591

L. Vaurio, L. Sands, Y. Wang, E. Mullen, and J. Leung, Postoperative Delirium: The Importance of Pain and Pain Management, Anesthesia & Analgesia, vol.102, issue.4, pp.1267-73, 2006.
DOI : 10.1213/01.ane.0000199156.59226.af

A. Burns, A. Gallagley, J. Byrne, and . Delirium, Delirium, Journal of Neurology, Neurosurgery & Psychiatry, vol.75, issue.3, pp.362-369, 2004.
DOI : 10.1136/jnnp.2003.023366

Z. Lipowski and J. Zbigniew, Delirium (Acute Confusional States), Lipowski [Internet], 1990.
DOI : 10.1001/jama.1987.03400130103041

B. Seltzer and M. M. Mesulam, Confusional states and delirium as discorders of attention, pp.165-74, 1990.

N. Magnie, Urgences et confusion mentale, 2001.

H. Ey, P. Bernard, and C. Brisset, Les Psychoses Confusionnelles, Man Psychiatr Paris Masson, pp.304-326, 1974.
DOI : 10.1016/B978-2-294-71158-9.50012-6

M. Delasiauve, Du diagnostic différentiel de la lypémanie, Ann Med Psychol Paris, vol.3, pp.370-442, 1851.

R. Fabbri, M. Moreira, R. Garrido, and O. Almeida, Validity and reliability of the Portuguese version of the Confusion Assessment Method (CAM) for the detection of delirium in the elderly, Arquivos de Neuro-Psiquiatria, vol.59, issue.2A, pp.175-184, 2001.
DOI : 10.1590/S0004-282X2001000200004

B. Liptzin and S. Levkoff, An empirical study of delirium subtypes, The British Journal of Psychiatry, vol.161, issue.6, pp.843-848, 1992.
DOI : 10.1192/bjp.161.6.843

S. Jacobson, DELIRIUM IN THE ELDERLY, Psychiatric Clinics of North America, vol.20, issue.1, pp.91-110, 1997.
DOI : 10.1016/S0193-953X(05)70395-6

P. Trzepacz, A review of delirium assessment instruments, General Hospital Psychiatry, vol.16, issue.6, pp.397-405, 1994.
DOI : 10.1016/0163-8343(94)90115-5

D. Adamis, N. Sharma, P. Whelan, and A. Macdonald, Delirium scales: A review of current evidence, Aging & Mental Health, vol.14, issue.5, pp.543-55, 2010.
DOI : 10.1080/13607860903421011

P. Vermeersch, The clinical assessment of confusion-A, Applied Nursing Research, vol.3, issue.3, pp.128-161, 1990.
DOI : 10.1016/S0897-1897(05)80132-6

M. Schuurmans, P. Deschamps, S. Markham, L. Shortridge-baggett, and S. Duursma, The Measurement of Delirium: Review of Scales. Res Theory Nurs Pract, pp.207-231, 2003.

B. Fisher and G. Flowerdew, A Simple Model for Predicting Postoperative Delirium in Older Patients Undergoing Elective Orthopedic Surgery, Journal of the American Geriatrics Society, vol.15, issue.2, pp.175-183, 1995.
DOI : 10.1111/j.1532-5415.1995.tb06385.x

D. Adamis, C. Morrison, A. Treloar, A. Macdonald, and F. Martin, The Performance of the Clock Drawing Test in Elderly Medical Inpatients: Does It Have Utility in the Identification of Delirium?, Journal of Geriatric Psychiatry and Neurology, vol.13, issue.3, pp.129-162, 2005.
DOI : 10.1177/0891988705277535

S. Inouye, C. Van-dyck, C. Alessi, S. Balkin, A. Siegal et al., Clarifying Confusion: The Confusion Assessment Method, Annals of Internal Medicine, vol.113, issue.12, pp.941-949, 1990.
DOI : 10.7326/0003-4819-113-12-941

J. Laplante, M. Cole, J. Mccusker, S. Singh, and M. Ouimet, Confusion Assessment Method. Validation of a French-language version]. Perspect Infirm Rev Off Ordre Infirm Infirm Qué, pp.12-16, 2005.

L. Wei, M. Fearing, E. Sternberg, and S. Inouye, The Confusion Assessment Method: A Systematic Review of Current Usage, Journal of the American Geriatrics Society, vol.10, issue.5, pp.823-853, 2008.
DOI : 10.1111/j.1532-5415.2008.01674.x

J. Monette, . Galbaud, G. Fort, S. Fung, F. Massoud et al., Evaluation of the confusion assessment method (CAM) as a screening tool for delirium in the emergency room, General Hospital Psychiatry, vol.23, issue.1, pp.20-25, 2001.
DOI : 10.1016/S0163-8343(00)00116-X

S. Inouye, The confusion assessment method (CAM):Training manual and coding manual, 2003.

P. Trzepacz, R. Baker, and J. Greenhouse, A symptom rating scale for delirium, Psychiatry Research, vol.23, issue.1, pp.89-97, 1988.
DOI : 10.1016/0165-1781(88)90037-6

J. Rosen, R. Sweet, B. Mulsant, A. Rifai, R. Pasternak et al., The Delirium Rating Scale in a psychogeriatric inpatient setting, J Neuropsychiatry Clin Neurosci, vol.6, issue.1, pp.30-35, 1994.

D. Adamis, A. Treloar, A. Macdonald, and F. Martin, Concurrent validity of two instruments (the Confusion Assessment Method and the Delirium Rating Scale) in the detection of delirium among older medical inpatients, Age and Ageing, vol.34, issue.1, pp.72-77, 2005.
DOI : 10.1093/ageing/afi019

W. Breitbart, B. Rosenfeld, A. Roth, M. Smith, K. Cohen et al., The memorial delirium assessment scale, Journal of Pain and Symptom Management, vol.13, issue.3, pp.128-165, 1997.
DOI : 10.1016/S0885-3924(96)00316-8

V. Neelon, M. Champagne, J. Carlson, and S. Funk, The NEECHAM Confusion Scale: Construction, Validation, And Clinical Testing, Nursing Research, vol.45, issue.6, pp.324-354, 1996.
DOI : 10.1097/00006199-199611000-00002

P. Cacchione, Four Acute Confusion Assessment Instruments: Reliability and Validity for Use in Long-Term Care Facilities, Journal of Gerontological Nursing, vol.28, issue.1, pp.12-21, 2002.
DOI : 10.3928/0098-9134-20020101-05

M. Smith, W. Breitbart, and M. Platt, A critique of instruments and methods to detect, diagnose, and rate delirium, Journal of Pain and Symptom Management, vol.10, issue.1, pp.35-77, 1995.
DOI : 10.1016/0885-3924(94)00066-T

C. Rapp, B. Wakefield, M. Kundrat, J. Mentes, T. Tripp-reimer et al., Acute confusion assessment instruments: Clinical versus research usability, Applied Nursing Research, vol.13, issue.1, 2000.
DOI : 10.1016/S0897-1897(00)80017-8

O. Keeffe, S. Mulkerrin, E. Nayeem, K. Varughese, M. Pillay et al., Use of Serial Mini-Mental State Examinations to Diagnose and Monitor Delirium in Elderly Hospital Patients, Journal of the American Geriatrics Society, vol.16, issue.(S, pp.867-70, 2005.
DOI : 10.1111/j.1532-5415.2005.53266.x

H. Woodford and J. George, Cognitive assessment in the elderly: a review of clinical methods, QJM, vol.100, issue.8, pp.469-84, 2007.
DOI : 10.1093/qjmed/hcm051

M. Lamantia, F. Messina, C. Hobgood, and D. Miller, Screening for Delirium in the Emergency Department: A Systematic Review, Annals of Emergency Medicine, vol.63, issue.5, pp.551-60, 2014.
DOI : 10.1016/j.annemergmed.2013.11.010

P. Whiting, A. Rutjes, J. Reitsma, P. Bossuyt, and J. Kleijnen, The development of QUADAS: a tool for the quality assessment of studies of diagnostic accuracy included in systematic reviews, BMC Medical Research Methodology, vol.273, issue.1, p.25, 2003.
DOI : 10.1001/jama.1995.03520290060030

J. Tropea and J. , Clinical practice guidelines for the management of delirium in older people in Australia, Australasian Journal on Ageing, vol.180, issue.5 Suppl, pp.150-156, 2008.
DOI : 10.1111/j.1741-6612.2008.00301.x

J. Francis, Prevention and treatment of delirium and confusional states Available from: http://www.uptodate.com/contents/prevention-and-treatment- of-delirium-and-confusional-states, p.2012, 2014.

. Direction-générale-de-la-santé, Direction générale de l'action sociale, Société française de gériatrie et, gérontologie. Les bonnes pratiques de soins en établissements d'hébergement pour personnes âgées dépendantes, 2007.

H. Orimo, H. Ito, T. Suzuki, A. Araki, T. Hosoi et al., Reviewing the definition of "elderly", Geriatrics and Gerontology International, vol.40, issue.3, pp.149-58, 2006.
DOI : 10.1111/j.1447-0594.2003.00108.x

K. Rockwood, Acute Confusion in Elderly Medical Patients, Journal of the American Geriatrics Society, vol.ii, issue.2, pp.150-154, 1989.
DOI : 10.1111/j.1532-5415.1989.tb05874.x

S. Levkoff, D. Evans, and B. Liptzin, Delirium, Archives of Internal Medicine, vol.152, issue.2, pp.334-374, 1992.
DOI : 10.1001/archinte.1992.00400140082019

R. Thomas, D. Cameron, and M. Fahs, A Prospective Study of Delirium and Prolonged Hospital Stay, Archives of General Psychiatry, vol.45, issue.10, pp.937-977, 1988.
DOI : 10.1001/archpsyc.1988.01800340065009

E. Ely, S. Gautam, R. Margolin, J. Francis, L. May et al., The impact of delirium in the intensive care unit on hospital length of stay, Intensive Care Medicine, vol.27, issue.12, pp.1892-900, 2001.
DOI : 10.1007/s00134-001-1132-2

J. Han, S. Eden, A. Shintani, A. Morandi, J. Schnelle et al., Delirium in Older Emergency Department Patients Is an Independent Predictor of Hospital Length of Stay, Academic Emergency Medicine, vol.117, issue.5, pp.451-458, 2011.
DOI : 10.1111/j.1553-2712.2011.01065.x

E. Ely, S. Inouye, G. Bernard, S. Gordon, J. Francis et al., Delirium in Mechanically Ventilated Patients, JAMA, vol.286, issue.21, pp.2703-2713, 2001.
DOI : 10.1001/jama.286.21.2703

J. Mccusker, M. Cole, N. Dendukuri, and E. Belzile, Does Delirium Increase Hospital Stay?, Journal of the American Geriatrics Society, vol.163, issue.11, pp.1539-1585, 2003.
DOI : 10.1046/j.1532-5415.2003.51509.x

O. 'keeffe, S. Lavan, and J. , The Prognostic Significance of Delirium in Older Hospital Patients, Journal of the American Geriatrics Society, vol.38, issue.Suppl 2, pp.174-182, 1997.
DOI : 10.1111/j.1532-5415.1997.tb04503.x

A. Murray, S. Levkoff, T. Wetle, L. Beckett, P. Cleary et al., Acute Delirium and Functional Decline in the Hospitalized Elderly Patient, Journal of Gerontology, vol.48, issue.5, pp.181-181, 1993.
DOI : 10.1093/geronj/48.5.M181

J. Francis and W. Kapoor, Prognosis after Hospital Discharge of Older Medical Patients with Delirium, Journal of the American Geriatrics Society, vol.36, issue.8, pp.601-607, 1992.
DOI : 10.1111/j.1532-5415.1992.tb02111.x

S. Inouye, J. Rushing, M. Foreman, R. Palmer, and P. Pompei, Does delirium contribute to poor hospital outcomes? A three-site epidemiologic study, J Gen Intern Med, 1998.

K. Rockwood, S. Cosway, D. Carver, P. Jarrett, K. Stadnyk et al., The risk of dementia and death after delirium, Age and Ageing, vol.28, issue.6, pp.551-557, 1999.
DOI : 10.1093/ageing/28.6.551

K. Pitkala, J. Laurila, T. Strandberg, and R. Tilvis, Prognostic Significance of Delirium in Frail Older People, Dementia and Geriatric Cognitive Disorders, vol.19, issue.2-3, pp.158-63, 2005.
DOI : 10.1159/000082888

J. Mccusker, M. Cole, N. Dendukuri, E. Belzile, and F. Primeau, Delirium in older medical inpatients and subsequent cognitive and functional status: a prospective study, CMAJ Can Med Assoc J J Assoc Medicale Can, vol.165, issue.5, pp.575-83, 2001.

J. Jackson, S. Gordon, R. Hart, R. Hopkins, and E. Ely, The Association Between Delirium and Cognitive Decline: A Review of the Empirical Literature, Neuropsychology Review, vol.14, issue.2, 2004.
DOI : 10.1023/B:NERV.0000028080.39602.17

E. Milbrandt, S. Deppen, P. Harrison, A. Shintani, T. Speroff et al., Costs associated with delirium in mechanically ventilated patients*, Critical Care Medicine, vol.32, issue.4, 2004.
DOI : 10.1097/01.CCM.0000119429.16055.92

D. Leslie, E. Marcantonio, Y. Zhang, L. Leo-summers, and S. Inouye, One-Year Health Care Costs Associated With Delirium in the Elderly Population, Archives of Internal Medicine, vol.168, issue.1, pp.27-32, 2008.
DOI : 10.1001/archinternmed.2007.4

W. Breitbart, C. Gibson, and A. Tremblay, The Delirium Experience: Delirium Recall and Delirium-Related Distress in Hospitalized Patients With Cancer, Their Spouses/Caregivers, and Their Nurses, Psychosomatics, vol.43, issue.3, pp.183-94, 2002.
DOI : 10.1176/appi.psy.43.3.183

E. Bruera, S. Bush, J. Willey, T. Paraskevopoulos, Z. Li et al., Impact of delirium and recall on the level of distress in patients with advanced cancer and their family caregivers, Cancer, vol.10, issue.9, pp.2004-2016, 2009.
DOI : 10.1002/cncr.24215

I. Hallberg, Impact of Delirium on Professionals, Dementia and Geriatric Cognitive Disorders, vol.10, issue.5, 1999.
DOI : 10.1159/000017182

S. Brajtman, R. , P. Hall, M. Shirley, H. Bush et al., Dip Pall Med Fac. Caring for Patients Experiencing Delirium at the End-of-Life with an Interprofessional Care Team Approach, 2010.

P. Gagnon, C. Charbonneau, P. Allard, C. Soulard, S. Dumont et al., Delirium in advanced cancer: a psychoeducational intervention for family caregivers, J Palliat Care, vol.18, issue.4, pp.253-61, 2002.

O. Malley, G. Leonard, M. Meagher, D. O-'keeffe, and S. , The delirium experience: A review, Journal of Psychosomatic Research, vol.65, issue.3, pp.223-231, 2008.
DOI : 10.1016/j.jpsychores.2008.05.017

A. Van-hemert, R. Van-der-mast, M. Hengeveld, and M. Vorstenbosch, Excess mortality in general hospital patients with delirium: A 5-year follow-up of 519 patients seen in psychiatric consultation, Journal of Psychosomatic Research, vol.38, issue.4, pp.339-385, 1994.
DOI : 10.1016/0022-3999(94)90038-8

J. Mccusker, M. Cole, M. Abrahamowicz, F. Primeau, and E. Belzile, Delirium Predicts 12-Month Mortality, Archives of Internal Medicine, vol.162, issue.4, pp.457-63, 2002.
DOI : 10.1001/archinte.162.4.457

E. Ely, A. Shintani, B. Truman, T. Speroff, S. Gordon et al., Delirium as a Predictor of Mortality in Mechanically Ventilated Patients in the Intensive Care Unit, JAMA, vol.291, issue.14, pp.1753-62, 2004.
DOI : 10.1001/jama.291.14.1753

J. Han, A. Shintani, S. Eden, A. Morandi, L. Solberg et al., Delirium in the Emergency Department: An Independent Predictor of Death Within 6 Months, Annals of Emergency Medicine, vol.56, issue.3, pp.244-52, 2010.
DOI : 10.1016/j.annemergmed.2010.03.003

J. Witlox, L. Eurelings, J. De-jonghe, K. Kalisvaart, P. Eikelenboom et al., Delirium in Elderly Patients and the Risk of Postdischarge Mortality, Institutionalization, and Dementia, JAMA, vol.304, issue.4, pp.443-51, 2010.
DOI : 10.1001/jama.2010.1013

S. Inouye, M. Foreman, L. Mion, K. Katz, and L. Cooney, Nurses' Recognition of Delirium and Its Symptoms, Archives of Internal Medicine, vol.161, issue.20, pp.2467-73, 2001.
DOI : 10.1001/archinte.161.20.2467

H. Koponen, U. Stenbåck, E. Mattila, H. Soininen, K. Reinikainen et al., Delirium among elderly persons admitted to a psychiatric hospital: clinical course during the acute stage and one-year follow-up, Acta Psychiatrica Scandinavica, vol.140, issue.6, pp.579-85, 1989.
DOI : 10.1093/ageing/9.3.137

F. Xavier, M. Ferraza, I. Argimon, C. Trentini, D. Poyares et al., The DSM-IV ?minor depression? disorder in the oldest-old: prevalence rate, sleep patterns, memory function and quality of life in elderly people of Italian descent in Southern Brazil, International Journal of Geriatric Psychiatry, vol.284, issue.2, pp.107-123, 2002.
DOI : 10.1002/gps.517

J. Han, A. Wilson, and E. Ely, Delirium in the Older Emergency Department Patient: A Quiet Epidemic, Emergency Medicine Clinics of North America, vol.28, issue.3, pp.611-642, 2010.
DOI : 10.1016/j.emc.2010.03.005

T. Ferman, B. Boeve, G. Smith, N. Graff-radford, D. Knopman et al., Fluctuations and dementia with Lewy bodies: drowsiness/lethargy, hypersonolence, disorganized thinking, and staring into space differentiate DLB from AD and normal aging, Neurology, vol.58, pp.1-39, 2002.

Z. Lipowski, Delirium in the Elderly Patient, N Engl J Med, vol.320, issue.9, pp.578-82, 1989.

K. Farrell and L. Ganzini, Misdiagnosing Delirium as Depression in Medically Ill Elderly Patients, Archives of Internal Medicine, vol.155, issue.22, pp.2459-64, 1995.
DOI : 10.1001/archinte.1995.00430220119013

E. Pérez and M. Silverman, Delirium: The Often Overlooked Diagnosis, The International Journal of Psychiatry in Medicine, vol.3, issue.3, pp.181-190, 1984.
DOI : 10.2190/GLAC-D95B-P9VK-1LJ4

J. Mccartney, Physicians' Assessment of Cognitive Capacity, Archives of Internal Medicine, vol.146, issue.1, pp.177-185, 1986.
DOI : 10.1001/archinte.1986.00360130215027

M. Hare, G. Arendts, D. Wynaden, and G. Leslie, Nurse Screening for Delirium in Older Patients Attending the Emergency Department, Psychosomatics, vol.55, issue.3, pp.235-277, 2014.
DOI : 10.1016/j.psym.2013.08.007

S. Kennelly, D. Morley, T. Coughlan, R. Collins, M. Rochford et al., Knowledge, skills and attitudes of doctors towards assessing cognition in older patients in the emergency department, Postgraduate Medical Journal, vol.89, issue.1049, pp.137-178, 1049.
DOI : 10.1136/postgradmedj-2012-131226

Y. Zou, M. Cole, F. Primeau, J. Mccusker, F. Bellavance et al., Detection and diagnosis of delirium in the elderly: psychiatrist diagnosis, confusion assessment method, or consensus diagnosis? Int Psychogeriatr IPA, pp.303-311, 1998.

K. Alagiakrishnan, P. Blanchette, and . Delirium, EMedicine Web Site Available Httpemedicinemedscapecomarticle288890-Overv [Internet], 2014.

L. Gower, M. Gatewood, and C. Kang, Emergency Department Management of Delirium in the Elderly, Western Journal of Emergency Medicine, vol.13, issue.2, pp.194-201, 2012.
DOI : 10.5811/westjem.2011.10.6654

J. Mccartney and L. Palmateer, Assessment of Cognitive Deficit in Geriatric Patients, Journal of the American Geriatrics Society, vol.19, issue.7, pp.467-71, 1985.
DOI : 10.1111/j.1532-5415.1985.tb05457.x

A. Flahault, M. Cadilhac, and G. Thomas, Sample size calculation should be performed for design accuracy in diagnostic test studies, Journal of Clinical Epidemiology, vol.58, issue.8, pp.859-62, 2005.
DOI : 10.1016/j.jclinepi.2004.12.009

D. Kenny, D. Kashy, and W. Cook, Dyadic Data Analysis

K. Rockwood, S. Cosway, P. Stolee, D. Kydd, D. Carver et al., Increasing the Recognition of Delirium in Elderly Patients, Journal of the American Geriatrics Society, vol.5, issue.3, pp.252-258, 1994.
DOI : 10.1111/j.1532-5415.1994.tb01747.x

P. Pompei, M. Foreman, C. Cassel, C. Alessi, and D. Cox, Detecting delirium among hospitalized older patients, Arch Intern Med Feb, vol.13155, issue.3, pp.301-308, 1995.

J. Han, S. Bryce, E. Ely, S. Kripalani, A. Morandi et al., The Effect of Cognitive Impairment on the Accuracy of the Presenting Complaint and Discharge Instruction Comprehension in Older Emergency Department Patients, Annals of Emergency Medicine, vol.57, issue.6, pp.662-71, 2011.
DOI : 10.1016/j.annemergmed.2010.12.002

C. Clarke, S. Friedman, K. Shi, T. Arenovich, J. Monzon et al., Conclusions:, CJEM, vol.53, issue.01, pp.5-11, 2005.
DOI : 10.1016/S0196-0644(88)80295-6

S. Hastings, A. Barrett, M. Weinberger, E. Oddone, L. Ragsdale et al., Older Patients' Understanding of Emergency Department Discharge Information and Its Relationship With Adverse Outcomes, Journal of Patient Safety, vol.7, issue.1, pp.19-25, 2011.
DOI : 10.1097/PTS.0b013e31820c7678

B. Eden and M. Foreman, Problems associated with underrecognition of delirium in critical care: A case study, Heart & Lung: The Journal of Acute and Critical Care, vol.25, issue.5, pp.388-400, 1996.
DOI : 10.1016/S0147-9563(96)80082-3

R. Mcnamara, E. Rousseau, and A. Sanders, Geriatric emergency medicine: A survey of practicing emergency physicians, Annals of Emergency Medicine, vol.21, issue.7, pp.796-801, 1992.
DOI : 10.1016/S0196-0644(05)81024-8

T. Brooks, Attitudes of medical students and family practice residents toward geriatric patients, J Natl Med Assoc, vol.85, issue.1, pp.61-65, 1993.

E. Keeler, D. Solomon, J. Beck, R. Mendenhall, and R. Kane, Effect of patient age on duration of medical encounters with physicians. Med Care, pp.1101-1109, 1982.

S. Radecki, R. Kane, D. Solomon, R. Mendenhall, and J. Beck, Do Physicians Spend Less Time with Older Patients?, Journal of the American Geriatrics Society, vol.19, issue.8, pp.713-721, 1988.
DOI : 10.1111/j.1532-5415.1988.tb07173.x

C. Armstrong-esther and K. Browne, The influence of elderly patients' mental impairment on nurse-patient interaction, Journal of Advanced Nursing, vol.4, issue.4, pp.379-87, 1986.
DOI : 10.1901/jaba.1975.8-261

J. Potter, J. George, and G. Development-group, The prevention, diagnosis and management of delirium in older people: concise guidelines, Clinical Medicine, vol.6, issue.3, 2006.
DOI : 10.7861/clinmedicine.6-3-303

K. Terrell, F. Hustey, U. Hwang, L. Gerson, N. Wenger et al., Quality Indicators for Geriatric Emergency Care, Academic Emergency Medicine, vol.9, issue.Suppl 2, 2009.
DOI : 10.1111/j.1553-2712.2009.00382.x

N. Greer, R. Rossom, P. Anderson, R. Macdonald, J. Tacklind et al., Delirium: Screening, Prevention, and Diagnosis -A Systematic Review of the Evidence, 2011.

J. Flaherty, D. Steele, J. Chibnall, V. Vasudevan, N. Bassil et al., An ACE Unit With a Delirium Room May Improve Function and Equalize Length of Stay Among Older Delirious Medical Inpatients, The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, vol.65, issue.12, pp.1387-92, 2010.
DOI : 10.1093/gerona/glq136

M. Charlson, P. Pompei, K. Ales, and C. Mackenzie, A new method of classifying prognostic comorbidity in longitudinal studies: Development and validation, Journal of Chronic Diseases, vol.40, issue.5, pp.373-83, 1987.
DOI : 10.1016/0021-9681(87)90171-8

M. Charlson, T. Szatrowski, J. Peterson, and J. Gold, Validation of a combined comorbidity index, Journal of Clinical Epidemiology, vol.47, issue.11, pp.1245-51, 1994.
DOI : 10.1016/0895-4356(94)90129-5

. Socie?te?francophonesocie?te?socie?te?francophone-de-me?decineme?decine-d-'urgence and M. Boivin, Re?fe?rentielRe?fe?Re?fe?rentiel IOA, Infirmie? re organisateur de l'accueil. Paris: Brain Storming, 2004.