Residual excessive daytime sleepiness (REDS) is defined as the urge to sleep during the day despite an intention to remain alert after optimal treatment of obstructive sleep apnea (OSA). This is a distressing outcome with an estimated prevalence of 9% to 22% among patients with OSA (Pépin JL, et al. Eur Respir J. 2009;33[5]:1062). The…
