title: [Delirium in nursing homes. Prevalence and risk factors].
abstract: OBJECTIVE
  To study the prevalence of delirium in the residential environment and to analyse the associated clinical, functional and mental factors.
  
  
  METHODS
  A cross-sectional epidemic study was conducted on a population of elderly persons institutionalised in 2011 in 6 nursing homes in Asturias. Socio-demographic, clinical, functional (Barthel Index [BI]) and mental (Mini-Mental State Examination [MMSE]) variables were collected. Delirium was defined by the Confusion Assessment Method.
  
  
  RESULTS
  A total of 505 elderly were included in the study (age 83.30 ± 7.33 years, with 67.70% women), and scores on the MMSE of 17.19 ± 10.35 and a BI score of 55.11 ± 35.82. The prevalence of delirium was 11.70%. On examining the risk of delirium among the studied variables, there was statistical significance when considering: BI, MMSE, dementia, pressure ulcers, or urinary catheter, and the prescribing of clomethiazole, ACTH-I or trazodone. In the analysis of the variables in the logistic regression with BI, diagnosis of dementia, the prescribing of clomethiazole or trazodone, in the equation, there was a statistical significance associated with delirium.
  
  
  CONCLUSIONS
  The prevalence of delirium in a residential environment in our study population was 11.7%. The results show that BI, diagnosis of dementia, and prescribing of clomethiazole or trazodone were associated with risk of delirium in institutionalised patients.
authors.affiliation: Área de Gestión Clínica de Geriatría, Hospital Monte Naranco, Oviedo, Asturias, España. pepe.gutierrez@telefonica.net
authors.forename: José
authors.initials: J
authors.lastname: Gutiérrez Rodríguez
authors.forename: Marian
authors.initials: M
authors.lastname: Rodríguez Piñera
authors.forename: Eloy
authors.initials: E
authors.lastname: Ortiz Cachero
authors.forename: Anabel
authors.initials: A
authors.lastname: González Alonso
authors.forename: Paloma
authors.initials: P
authors.lastname: Pérez Guillén
authors.forename: Francisco Luis
authors.initials: FL
authors.lastname: Jiménez Muela
authors.forename: Arsenio
authors.initials: A
authors.lastname: Alonso Collada
authors.forename: Juan José
authors.initials: JJ
authors.lastname: Solano Jaurrieta
mesh_terms: D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D003693:Delirium / Q000453:epidemiology*; D005260:Female; D006707:Homes for the Aged; D006801:Humans; D008297:Male; D009735:Nursing Homes; D015995:Prevalence; D012307:Risk Factors
keywords: Cognitive assessment; Delirium; Demencia; Dementia; Nursing homes; Residencia de ancianos; Valoración cognitiva