多导睡眠记录仪是一种用于评价与睡眠有关疾病的敏感诊断仪器。一般来说,单独1个满意的整夜多导睡眠记录图就可满足要求。但事实上,美国胸科学会认为,单独1个整夜多导睡眠记录图足以排除临床上重要的睡眠呼吸暂停的发生。因此6年间,作者复查了佐治亚医学院1984～1990年所做的全部多导睡眠记录图,研究严重阻塞性呼吸暂停患者在潜伏期出现令人满意的整夜阴性多导睡眠记录图的可能性。呼吸暂停的发作≥30次和呼吸暂停指数(每小时呼吸暂停发作的次数)≥5的患者认为是患有睡眠呼 The polysomnography recorder is a sensitive diagnostic instrument used to evaluate sleep-related diseases. In general, a satisfactory single overnight polysomnography record will suffice. But in fact, the American Thoracic Society believes that a single overnight polysomnography alone is enough to rule out clinically important sleep apnea. Therefore, during a six-year period, the authors reviewed all polysomnography performed by the Georgia Medical School from 1984 to 1990 to investigate the possibility of a satisfactory overnight negative polysomnography record in patients with severe obstructive apnea. Apnea episodes ≥30 and Apnea Index (number of apnea episodes per hour) ≥5 were considered as having a sleep call