Mild Cognitive Impairment and Obstructive Sleep Apnea

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.