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用多导睡眠仪监测法诊断睡眠呼吸暂停综合征(SAS)既昂贵又复杂。目前则多利用潮气末二氧化碳分压(EtCO_2)对麻醉及危重症患者进行通气监测。对象与方法受试者包括39例疑为SAS 的患者及10例正常人。患者中6例因慢性阻塞性呼吸道疾病而致PaO_2<8kPa。受试者中29例用有侧口的鼻面罩取样,20例用有四通塑料管的鼻塞取样。用多导睡眠仪记录口鼻气流量、胸壁和腹部运动、眼动电图、脑电图、下颏肌电图和心电图。用红外光谱仪和多导睡眠仪记录8h 内呼吸暂停的次数并计算呼吸暂停指数
Using polysomnography for the diagnosis of sleep apnea syndrome (SAS) is both expensive and complicated. Currently more use of tidal carbon dioxide partial pressure (EtCO_2) for anesthesia and critically ill patients ventilation monitoring. Subjects and Methods Subjects included 39 patients with suspected SAS and 10 normal controls. 6 patients due to chronic obstructive respiratory disease PaO_2 <8kPa. Twenty-nine of the subjects had a nasal mask with a lateral outlet and 20 of them had a nasal plug with a four-way plastic tube. Nasal flow, chest and abdomen movements, oculography, EEG, chin EMG, and electrocardiogram were recorded with a polysomnograph. Infrared spectroscopy and polysomnography were used to record the number of apneas within 8h and the apnea index