Obstructive Sleep Apnea Clinical Trial
Official title:
Mild Cognitive Impairment and Obstructive Sleep Apnea
Obstructive sleep apnea (OSA) has been linked to increased risk for Alzheimer's disease (AD), but little prospective evidence exists on the effects of OSA treatment in preclinical AD. The objective was to determine if CPAP treatment adherence, controlling for baseline differences, predicts cognitive and everyday function after 1 year in older adults with MCI and to determine effect sizes for a larger trial. The aim of the Mild Cognitive Impairment and Obstructive Sleep Apnea (Memories 1) trial was to determine whether CPAP treatment adherence, controlling for any baseline differences in OSA severity, ApoE4, and other previously identified demographic and patient factors, might predict cognitive and everyday function after 1 year in older adults with amnestic MCI.
In this prospective open label clinical trial, primary inclusions were age 55-89 years and apnea-hypopnea index ≥ 10. Groups were: (1) MCI, OSA, and CPAP adherent (MCI+CPAP); (2) MCI, OSA, CPAP nonadherent(MCI-CPAP). There were 68 MCI+OSA participants at baseline, and 14 (21%) dropped out during the 1 year follow-up. At 1 year, n=54, with MCI+CPAP group n=29, and MCI-CPAP group n=25. Statistically significant improvements in psychomotor/cognitive processing speed in the MCI+CPAP group versus the MCI-CPAP group were observed at 1 year after adjustment for age, race, and marital status. There were small to moderate effect sizes (ES) for memory, attention, daytime sleepiness, and everyday function, favoring the MCI+CPAP group versus the MCI-CPAP group. ;
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