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Inf. psiquiátr ; (235): 109-122, ene.-mar. 2019. graf, tab
Article in Spanish | IBECS | ID: ibc-183991

ABSTRACT

Objetivos: Determinar la prevalencia de aparición de primer episodio de delirium en mayores de 65 años, su impacto sobre mortalidad y factores relacionados. Métodos: Estudio cross-sectional, prospectivo. Durante 4 meses se incluyeron pacientes ≥ 65 años ingresados en una unidad de convalecencia, excluyéndose sujetos con demencia avanzada, diagnóstico de encefalopatía orgánica o evidencia de delirium al momento del ingreso. Se estudiaron variables específicas de la valoración geriátrica y mediante un cuestionario se observaron probables factores predisponentes (deterioro visual/auditivo, uso de medicamentos psicoactivos) y factores precipitantes (uso de catéter urinario, fiebre, mal control del dolor o alteraciones en el sueño). El delirium se diagnosticó mediante la escala CAM. Se realizó análisis multivariable utilizando métodos de regresión logística para descripción de factores relacionados con delirium; y método proporcional de Cox para descripción de los predictores de mortalidad. Resultados: Se incluyeron 195 pacientes. El 39% (76/195) fueron hombres, con edad media de 81.9 años (8.5). El índice de Barthel al ingreso fue 45 (IQR 25-60) y el índice de Charlson 2 (IQR 1-4). El 21% (41/195) presentó delirium previo. La prevalencia de primer episodio de delirium fue de 23.1% (95% CI: 17.7-29.5). Los principales factores relacionados con el riesgo de desarrollo de delirium fueron: la edad OR:1.6 (95%CI 1.01-1.11), el número de errores según Test de Pfeiffer OR:1.4 (95%CI 1.2-1.64) y el Indice de Charlson al ingreso OR:1.25 (95%CI 1.02-1.53). La estancia media fue de 37.1 (21.2) días y e tiempo para desarollo de delirium fue de 15 días. Fueron éxitus 11 sujetos (5.7%). Los principales predictores de mortalidad global, ajustados por edad e índice de Charlson, fueron: Delirium HR:5.26 (95%CI 1.30-21.29) y derivación desde Urgencias (Subagudos) HR:5.34 (95%CI 1.6217.56). Conclusión: Las variables relacionadas con deterioro cognitivo fueron las más importantes relacionadas con el desarrollo de delirium en una unidad de convalescencia. El delirium es un factor independiente de mortalidad en estas unidades


Objectives: To determine the prevalence of the first episode of delirium in patients older than 65 years, its impact on mortality and related factors. Methods: Prospective and cross-sectional study. During 4 months of follow-up, patients older than 65 years admitted in a post-acute convalescence unit were included. Using a questionnaire, we studied probable predisposing factors (visual and hearing impairment, psychoactive drugs) and precipitating factors (bladder catheter, fever, poor control of pain and sleep disturbances). Additionally, demographic data, comorbidity, pre-existing cognitive impairment and physical function were recorded. Subjects with advanced dementia, diagnosis of any organic encephaloencephalopathy or evidence of delirium at the time of the admission were excluded. Delirium was defined according the Confusion Assessment Method. The factors associated with delirium were studied by a multivariate analysis performed by logistic regression. A multivariate Cox proportional hazards regression analysis was used to examine predictors of mortality with competing endpoints (death and discharge alive) and estimated both the daily hazard and cumulative risk of death. Results: A total of 195 patients received follow-up during the observation period. A 39% (76/195) were men (mean 82.1 years). Admission Barthel index score was 45 (IQR 25-60) and Charlson comorbidity score was 2 (IQR 1-4). A 21% (41/195) had presented history of delirium prior. Prevalence of first episode of delirium was 23.1% (95% CI: 17.7-29.5). Principal related factors to delirium were: Age OR:1.6 (95%CI 1.01-1.11), total errors according Pfeiffer's Test OR:1.4 (95%CI 1.2-1.64) and Charlson comorbidity score OR:1.25 (95%CI 1.02-1.53). Mean time for development of delirium was 15 days and average time for hospital discharge was 37.1 days. 11 subjects (5.7%) died during followup. Adjusted by age and Charlson score, main predictors for mortality were: Delirium HR:5.26 (95%CI 1.30-21.29) and derivation from emergency room HR:5.34 (95%CI 1.6217.56). Conclusions: Associated variables with cognitive impairment were the most important with development of first episode of delirium in a convalescence unit. Delirium is an independent factor of mortality in these units


Subject(s)
Humans , Middle Aged , Aged , Aged, 80 and over , Neurocognitive Disorders/epidemiology , Delusions/epidemiology , Delusions/prevention & control , Risk Factors , Convalescence , Precipitating Factors , Delusions/mortality , Surveys and Questionnaires , Psychotropic Drugs/administration & dosage , Multivariate Analysis , Logistic Models , Cognitive Dysfunction/epidemiology , Cognitive Dysfunction/therapy , Cognitive Aging , Cross-Sectional Studies , Repertory, Barthel
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