Number of Lapses during the Psychomotor Vigilance Task as an Objective Measure of Fatigue Number of Lapses during the Psychomotor Vigilance Task as an Objective Measure of Fatigue Download Mouth Opening During Sleep may be a Critical Predictor of Surgical Outcome after Uvulopalatopharyngoplasty for Obstructive Sleep Apnea Obstructive Sleep Apnea Presenting as Pseudopheochromocytoma