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STUDY OBJECTIVES: To recognize the potential effect of acetylcholinesterase-inhibiting medications on sleep quality when used for the treatment of mild to moderate Alzheimer disease and describe sleep outcomes for patients treated with galantamine. DESIGN: This study examined sleep quality among individuals with mild to moderate Alzheimer disease using data from a 3-month, double-blind, flexible-dose trial of galantamine. The hypothesis was no difference in sleep quality between galantamine- and placebo-treated subjects. PATIENTS: 136 patients treated with galantamine 24 mg per day and 125 patients treated with placebo. MEASUREMENTS: Based on caregiver reports, the sleep-related outcome measures were the Pittsburgh Sleep Quality Index and the sleep disorders item from the Neuropsychiatric Inventory. Using a P-value of 0.05 (2-tailed), analysis of covariance was used to compare treatments on mean change from baseline to month 3 (Pittsburgh Sleep Quality Index) or mean score at month 3 (Neuropsychiatric Inventory), adjusted for baseline score and investigator. RESULTS: Both patient groups had an average age of 75 years and a mean Mini-Mental Status Examination score of 20. There were no significant differences between groups on the Pittsburgh Sleep Quality Index total (P=0.59) or subscales. For galantamine and placebo, the mean adjusted changes from baseline on the total Pittsburgh Sleep Quality Index were 0.01 and -0.17, respectively. There also was no difference on the Neuropsychiatric Inventory sleep score at month 3 (P=0.51). CONCLUSIONS: Medications to treat Alzheimer disease should maintain sleep quality and have a neutral effect on sleep. These results further confirm the lack of sleep problems associated with galantamine treatment.
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