Correlation Between CPAP Compliance and Food Intake Timing

Despite widespread agreement that continuous positive airway pressure is effective therapy for obstructive sleep apnea, it is estimated that 50% of patients recommended for therapy are noncompliant 1 year later. Nasal continuous positive airway pressure (CPAP) is the most definitive medical therapy for obstructive sleep apnea (OSA). Many patients have difficulty tolerating nasal CPAP due to nasal airway problems, mouth leak, and general discomfort from the mask and headgear. Interventions to improve compliance in such patients have not been studied. The investigators plan to further evaluate the usage of CPAP and identify if the timing of last meal before bedtime affects the compliance and tolerance of CPAP.