Impact of early cognitive impairment on outcome trajectory in patients with intracerebral hemorrhage

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OBJECTIVE: To assess the prevalence and factors associated with early cognitive impairment in intracerebral hemorrhage (ICH) patients and to describe short-term recovery trajectories among ICH patients with early cognitive impairment. METHODS: We prospectively enrolled ICH patients without baseline dementia in our institutions. Cognitive function was assessed using mini-mental state examination (MMSE), and functional outcome was evaluated at discharge, 3, and 6 months after symptoms onset using the modified Rankin Scale (mRS). We used multinomial logistic regression models to investigate potential risk factors and generalized linear models to analyze the functional outcome data. RESULTS: Out of 181 patients with ICH, 167 were included in the final analysis. Early cognitive impairment occurred in 60.48% of patients with ICH. Age (odds ratio [OR] per 1-year increase, 1.037; 95% confidence interval [CI], 1.003-1.071; p = 0.034), National Institutes of Health Stroke Scale (NIHSS) score (OR per 1-point increase, 1.146; 95% CI, 1.065-1.233; p < 0.001) and lobar ICH location (OR, 4.774; 95% CI, 1.810-12.593; p = 0.002) were associated with early cognitive impairment in ICH patients. Patients with ≥10 years of education were less likely to experience early cognitive impairment (OR, 0.323; 95% CI, 0.133-0.783; p = 0.012). Participants with early cognitive impairment had a higher risk of poor outcome (OR, 4.315; 95% CI, 1.503-12.393; p = 0.005) than those without. Furthermore, there was a significantly faster functional recovery rate for those without early cognitive impairment compared with those with at 3 and 6 months (p < 0.05). INTERPRETATION: Early cognitive impairment was prevalent and associated with poor outcomes in ICH patients, which decelerated short-term functional recovery.

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