不同类型的脉搏传导时间微觉醒指数在睡眠监测中的价值

Value of various types of PTT arousal in sleep study

目的探讨不同类型的由脉搏传导时间(PTT)判定的微觉醒指数在睡眠监测中的价值。方法对99例疑似睡眠呼吸障碍的患者使用Hypno PTT和Sandman PSG睡眠监测系统同步进行夜间睡眠呼吸监测,将三种不同的PTT微觉醒指数[呼吸相关PTT微觉醒指数(PTTr)、非呼吸相关PTT微觉醒指数(PTTn)、总PTT微觉醒指数(PTTt)]与睡眠监测四项指标[呼吸暂停低通气指数(AHI)、最长暂停时间(L-AT)、最低血氧饱和度(L-SaO2)、平均血氧饱和度(A-SaO2)]进行比较。结果不同程度的患者PTTn无明显区别,PTTr、PTTt与病情严重程度有一定的相关性,PTTr与AHI、L-AT、L-SaO2、A-SaO2的相关性要高于PTTt与这四项指标的相关性。结论相比于PTTn及PTTt,PTTr更能反映睡眠呼吸障碍的严重程度。

Objective To study the value of various types of arousal measured by PTT in sleep study.Methods Both Hypno PTT and Sandman PSG were used in the same patient suspected OSAHS.Three types of PTT arousal index (PTTr,PTTn and PTTt) had been compared one by one by the results of PSG.4 indicators of PSG were used in the comparison,including AHI,the longest apnea time,the lowest oxygen saturation and the average oxygen saturation.Results There was no significant correlation between the results of PSG and PTTn.The correlation between PTTr and PSG was closer than that between PTTt and PSG.Conclusions PTTr is more valuable than PTTn and PTTt in the study of OSAHS.