Value of Video Laryngoscope in Localization Diagnosis of UpperAirway Stricture in Obstructive Sleep Apnea-Hypopnea Syndrome

Objective:To investigate the value of video laryngoscope in localization diagnosis of upper airway stricture in obstructive sleep apnea-hypopnea syndrome(OSAHS) during drug-induced sleep.Methods:132 patients with OSAHS were randomly divided into group A and B in this study.In group A,the patients were examined with video laryngoscope to locate the upper airway stricture,when in sleep induced by midazolam.In group B,the patients had conventional physical examination when awake.And the operation plans of both groups were made based on the localization diagnostic results.Results:In group A,72.1pec patients had several stricture level and in group B only 33.8pec.The follow up time was more than 6 months,and the cure rate,excellent effective rate,and total effective rate of group A were significantly higher than those in group B respectively (P0.05).Conclusion:Localization diagnosis of upper airway stricture in patients with OSAHS with video laryngoscope before operation can improve the cure efficiency significantly.