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Adherence to continuous positive airway pressure treatment in patients with Alzheimer's disease and obstructive sleep apnea.

OBJECTIVE
This analysis examined whether patients with Alzheimer disease (AD) tolerate continuous positive airway pressure (CPAP).


METHOD
Thirty patients with AD were randomized to CPAP or sham CPAP and completed sleep, depression, and quality-of-life questionnaires. Participants could choose to continue treatment after the trial.


RESULTS
Patients wore CPAP for 4.8 hours per night. More depressive symptoms were associated with worse adherence (rS=-0.37; N=30, p<0.04). Patients who continued using CPAP had fewer depressive symptoms (t [19]=2.45, p=0.02) and better adherence (t [19]=2.32, p=0.03) during the trial.


CONCLUSION
Patients with AD with obstructive sleep apnea can tolerate CPAP. Adherence and long-term use may be more difficult among those patients with more depressive symptoms.