閉塞型睡眠時無呼吸症候群患者における鼻翼筋の活動について

抄録

We evaluated the activity of dilator naris EMG (Electro-Myo-Graphy) and submental EMG during sleep in three patients with obstructive sleep apnea syndrome. Both EMG activities involved periodic changes which proved to be correlated with each other (r=0.85). Apnea and hypopnea episodes always occurred at the nadir of these periodic changes. The activity of dilator naris EMG, as well as submental EMG, at the nadir of these periodic changes was significantly lower during REM (Rapid Eye Movement) sleep than non-REM sleep and also significantly lower during severe airway obstruction accompanied by paradoxical movements of thorax and abdomen. The correlation of this EMG activity with SaO2 or the duration of obstructive apnea was more remarkable in submental EMG than dilator naris EMG in the observed patients.