Brain Fog in Sleep Apnea

Objective: This observational, cross-sectional pilot study aims to assess "Brain Fog" (cognitive symptoms impacting memory, attention, and concentration) in severe Obstructive Sleep Apnea (OSA) patients. It compares two groups: those on CPAP treatment for at least 3 months and those not yet treated. Procedures: Severe OSA patients (AHI \> 30) will complete a 30-minute questionnaire at the Sleep Center Clinic, covering sociodemographic information, OSA diagnosis, and treatment details. Assessment scales will measure daytime sleepiness, sleep quality, and psychophysical fatigue. Participants: 80 Sleep Center outpatients, evenly divided by age and gender: 40 with severe OSA on CPAP for at least 3 months. 40 with severe OSA not yet on CPAP. Duration: Approximately 12 months.