TY - JOUR T1 - Excessive daytime sleepiness in patients with sleep-disordered breathing JF - European Respiratory Journal JO - Eur Respir J SP - 685 LP - 686 DO - 10.1183/09031936.00149507 VL - 31 IS - 3 AU - A. BaHammam Y1 - 2008/03/01 UR - http://erj.ersjournals.com/content/31/3/685.abstract N2 - To the Editors: I read with interest the article by Mediano et al. 1 about excessive daytime sleepiness (EDS) in patients with obstructive sleep apnoea (OSA). In order to investigate the determinants of EDS in OSA patients, the authors compared the demographics and polysomnographic variables of two groups of OSA patients who had a similar apnoea/hypopnoea index (AHI), age and body mass index (BMI). Nocturnal hypoxaemia was reported to be a major determinant of EDS in patients with OSA. I would like to point out that the possible coexistence of obesity hypoventilation syndrome (OHS), which is a known cause of EDS, was not ruled out in the … ER -