两种方法诊断OSAHS的比较

Comparison of application between portable sleep monitor and polysomnography in OSAHS

目的探讨便携式睡眠监测仪在诊断阻塞性睡眠呼吸暂停低通气综合征(OSAHS)中的作用,为临床应用更简易、准确、低成本的诊断方法提供参考。方法采用某进口的多导睡眠仪(PSG)和便携式睡眠监测仪,对60例怀疑有OSAHS的对象均采用两种方法进行监测,比较两种诊断方法各指标的差异,以及便携式睡眠监测仪的敏感性、特异性。结果两种方法所得呼吸紊乱指数、平均血氧饱和度、最低血氧饱和度、低于90%的血氧饱和度时间等均无显著性差异(P>0.05)。与PSG比,便携式睡眠监测仪的敏感性为100%,特异性为60%;对病情分度判断的符合率分别为轻度73.3%、中度71.4%、重度94.4%。结论便携式睡眠监测仪对诊断OSAHS有高敏感性,尤其对重度OSAS的诊断更为准确,适合于临床常规诊断。

Objective To offer an easier, more accurate and lower cost diagnostic method by evaluating the portable sleep monitor in the diagnosis of the obstructive sleep apnea hypoventilation syndrome（OSAHS）. Methods 60 cases with suspected OSAHS were monitored with imported portable sleep monitor and the polysomnography simultaneously so as to compare the difference of each parameter provided by the two diagnostic methods as well as to evaluate the sensitivity and specificity of portable sleep monitor. Results There was no significant difference in respiratory disturbance index （RDI）, the mean SaO2 ,the minimal SaO2, and percentage of time spent at SaO2 below 90% （ SIT 90% ） between the two diagnostic methods （ P 〉 0. 05 ）. Sensitivity and specificity of the portable sleep monitor were 100% and 60% respectively in detecting OSAHS. The corresponse of the specificity of two method was 73.3% （ mild OSAHS） ,71.4% （ moderate OSAHS） and 94. 4% （ severe OSAHS） respectively according to the degree of OSAHS. Conclusions In the diagnosis of OSAHS, the portable sleep monitor is highly sensible and more exact especially for severe OSAHS ,and therefore suitable for routing clinical diagnosis.