| 1. | If the history is positie , then it is followed by polysomnography , an oernight sleep study that usually looks at sleep stages , time in stages , oxygenation , co2 leels , time spent in less than 90 % o2 saturation , and rdi
如果规律性研究结果是正性的，那么接下来就要用多导睡眠描记法检查，一种通常观察睡眠分期，各期时间，氧气，二氧化碳水平，饱和90以下氧气的时间，及rdi的通宵睡眠研究。 |
