Obstructive sleep apnea: Electromyographic and fiberoptic studies

摘要: Abstract Seventeen predominantly obstructive sleep apnea patients and four normal controls (all adult males) underwent one or both investigative protocols: (A) A fiberoptic endoscope was introduced intranasally into the pharynx subjects were monitored continuously filmed intermittently during wakefulness sleep. (B) Muscles selected because of their anatomical importance in maintaining oropharynx respiratory cycle electromyographically implanted intraorally or, tracheostomy patients, at time surgery, polygraphically In protocols, standard electroencephalogram, chin electromyogram (EMG), electrooculogram (EOG), respiration simultaneously. During studies first appeared as a partial total invagination posterolateral pharyngeal walls, while laryngeal inlet remained patent. EMG recordings showed firing patterns unobstructed sleep-induced apnea, however, significant decrease complete disappearance activity observed palatoglossus, palatopharyngeus, genioglossus, superior middle constrictors pharynx, stylopharyngeus. The obstruction involves absence, inspiration, dilators needed to counteract loads abruptly imposed by intrathoracic negative pressure changes.