CPAP via nasal mask: a treatment for occlusive sleep apnea.
A 38-year-old man had incapacitating hypersomnolence and severe occlusive sleep apnea. Baseline polysomnography revealed 92.9 apneic episodes per hour of sleep. Application of nasal continuous positive airway pressure through a modified nasal nitrous mask using a ball-valve resistor resulted in reduction of occlusive apnea to 1.17 episodes per hour of sleep and marked improvement in the quality of sleep.
D000328:Adult; D006801:Humans; D008297:Male; D008397:Masks; D009666:Nose; D011175:Positive-Pressure Respiration / Q000295:instrumentation* / Q000379:methods; D012891:Sleep Apnea Syndromes / Q000628:therapy*