Sleep-disordered breathing among patients admitted for inpatient video-EEG monitoring

Objective: Examine the frequency and risk factors of sleep-disordered breathing in individuals with epilepsy and psychogenic non-epileptic events (PNES). Methods: We conducted a cross-sectional study of consecutive patients admitted for inpatient video-EEG monitoring at The Royal Melbourne Hospital, Australia between December 1, 2011 and July 31, 2017. Participants underwent routine clinical investigations during their monitoring period including polysomnography, neurocognitive testing, and screening instruments of daytime somnolence, sleep quality, and quality of life. Results: Our study population consisted of 370 participants who received a diagnosis of epilepsy (n=255), PNES (n=93), or both disorders (n=22). Moderate-to-severe sleep-disordered breathing (defined by an apnea-hypopnea index ≥15) was observed in 26.5% (98/370) individuals, and did not differ across subgroups: epilepsy 26.3% (67/255), PNES 29.0% (27/93) or both disorders 18.2% (4/22; p=0.610). Following adjustment for c...