Factores asociados a bajo rendimiento cognitivo en adultos con sospecha de apnea obstructiva del sueño

Abstract

Obstructive sleep apnea (OSA) has been associated with cognitive decline. Objective: To identi- fy factors associated with low cognitive performance (LCP) in adults with suspected OSA. Method: Cognitive evaluation was performed using Montreal Cognitive Assessment (MoCA), and scores lower than 21 were considered LCP. The diagnosis of OSA was made using 5-channel respiratory polygraphy, according to the apnea-hypopnea index (AHI). Sleep quality, depressive symptoms, among others, were also evaluated. Results: In 91.5% of 320 consecutive patients the diagnosis of OSA was confirmed. The MoCA average was 20.6 points. The group with LCP was older, less educated, were more likely to have hypertension and diabetes mellitus, and with more severe oxyhemoblobin desaturations. There were no differences in severity according to AHI between both groups. Comment: Patients with LCP have risk factors associated with cognitive impairment, besides more severe oxyhemoglobin desaturations.