[The clinical value of sleep endoscopy in the diagnosis of obstruction sites in patients with obstructive sleep apnea hypopnea syndrome: a systematic review and Meta-analysis].

To investigate the clinical value of video laryngoscope in localization diagnosis of upper airway obstruction in OSAHS during drug-induced sleep.We searched the MEDLINE (PubMed), EMBASE, CCTR (The Cochrane Controlled Clinical Trials Register Database), CNKI, WAN FANG databases for randomized, blinded studies according Cochrane systematic review. We chose articles published between 1975 and 2016 about the value of sleep endoscopy in localization diagnosis of upper airway obstruction in OSAHS. All the data were analyzed by the software of the Meta-Disc 1.4.Seven qualitative studies and three quantitative studies were included.A total of three studies with 175 patients met the inclusion criteria for Meta-analysis. Meta-analysis results showed that the merger sensitivity degrees, specific degrees, diagnostic odds ratio, positive likelihood ratio, negative likelihood ratio and 95% were 1.0(0.96-1.0),0.71(0.59-0.81),212.47(36.07-1 251.56),4.40(1.28-15.16),and 0.02(0-0.11) respectively. The SROC area under the concentration-time curve (AUC) was 0.991 0.Because of its high accuracy, sleep endoscopy can be used as an important auxiliary examination and the sensitive indexes for the surgery procedures and prognosis treatment plan for OSAHS. But more cohort studies are needed for the verification.