ABSTRACT
INTRODUCTION: Cognitive impairment is common in Parkinson's disease and represents a risk for dementia. Identifying associated factors will help implement early interventions and study its progression. OBJECTIVE: To identify factors associated with cognitive impairment. METHOD: Cross-sectional study of 306 subjects with Parkinson's disease who were assessed for 12 months. Demographics and clinical variables were analyzed as explanatory variables, and cognitive impairment as outcome variable. Significant variables were used to construct a cognitive impairment predictive model. RESULTS: Cognitive impairment was reported in 43.8%. Female gender (p = 0.001, odds ratio [OR] = 1.77), age at diagnosis (p < 0.001, mean deviation [MD] = 5.7), level of education (p < 0.001, MD = -2.9), disease duration (p = 0.003, MD = 1.7), MDS-UPDRS part III score (p < 0.001, MD = 9.7), presence of anxiety (p = 0.007, OR = 2.11), hallucinations (p = 0.029, OR = 2.27) and freezing of gait (p = 0.048, OR = 1.91) were predictors for cognitive impairment. The use of type B monoamine oxidase inhibitors was associated with less cognitive impairment (p = 0.001). CONCLUSIONS: Predictive factors that were consistent with those previously reported were identified. Prospective studies are required in order to clarify the effect of type B monoamine oxidase inhibitors on cognition.
INTRODUCCIÓN: El deterioro cognitivo en Parkinson es común y representa un riesgo para demencia. Identificar los factores asociados ayudará a implementar intervenciones tempranas y estudiar la progresión del deterioro cognitivo. OBJETIVO: Identificar factores asociados con deterioro cognitivo. MÉTODO: Estudio transversal de 306 sujetos con Parkinson evaluados durante los últimos 12 meses. Se estudiaron variables demográficas y clínicas como explicativas y el deterioro cognitivo como desenlace. Las variables significativas se utilizaron para construir un modelo predictor de deterioro cognitivo. RESULTADOS: El 43.8 % reportó deterioro cognitivo. El sexo femenino (p = 0.001, RM = 1.77), edad al diagnóstico (p < 0.001, desviación media [DM] 5.7), escolaridad (p < 0.001, DM −2.9), duración de enfermedad (p = 0.003, DM 1.7), puntuación en MDS-UPDRS parte III (p < 0.001, DM 9.7), presencia de ansiedad (p = 0.007, RM = 2.11), de alucinaciones (p = 0.029, RM = 2.27) y congelamientos de la marcha (p = 0.048, RM = 1.91) fueron predictores para deterioro cognitivo. El uso de inhibidores monoamina-oxidasa tipo B se asoció con menor deterioro cognitivo (p = 0.001). CONCLUSIONES: Se identificaron factores predictores consistentes con lo reportado previamente. Se requieren estudios prospectivos para aclarar el efecto de los inhibidores monoamina-oxidasa tipo B en la cognición.
