[The development of multi-level diagnosis of obstructive sleep apnea hypopnea syndrome]

The obstruction of OSAHS patient is not limited to a single level. These blockages of multiple sites trend to influence each other and participate in a complex process. To date, the determination of obstruction is often depends on empirical judgment of clinician. However, it is a key issue to find out which level of obstruction is most significant. The article will focus on the commonly used values in laboratory examinations and their relationship with AHI. Based on the existing work, we decide to make a comprehensive analysis of their predictive value.