Application value of nasopharyngeal airway combined with polysomnography in positing relieve airway obstruction before surgery for patients with OSAHS / 中国基层医药

ABSTRACT

Objective To investigate the application value of nasopharyngeal airway combined with polysom-nography in positing relieve airway obstruction before surgery for patients with obstructive sleep apnea-hypopnea syn-drom(OSAHS).Methods 69 patients with OSAHS were underwent consecutive 3 nights of sleep monitoring.At first night,the polysomnography figures were detected by using 36 polysomnography.At second night,patients were wearing nasopharyngeal airway all night and undergoing polysomnography figure monitoring.At third night,the airway pressures were measured by using ApneaGraph sleep monitoring and obstructive positioning system.The indicators of AHI, LSaO2 ,SaO2 and SaO2 <90% T before and after wearing nasopharyngeal airway were compared.The patients were divided into the treatment success group(S group)and treatment failure group(F group),according to AHI change before and after wearing nasopharyngeal airway.The indicators of the two groups were compared.The AHI in the lower part and proportion of lower portions blocking in the total congestion events under the ApneaGraph monitoring system were analyzed.Results 69 patients were successfully implanted nasopharyngeal airway,without nasal trauma,nasal bleeding,etc.63 cases of patients(91.3%)were well tolerated.The AHI and SaO2 <90% T at second night were lower than the first night,while LSaO2 and SaO2 were higher than the first night,the differences were statistically significant(t =13.811,13.307,10.852,4.277,all P <0.05).45 cases(71.4%)were in S group and 18 cases (28.6%)were in F group.LSaO2 in S group was higher than F group,while the lower AHI and lower portions blocking ratio were lower than F group,the differences were statistically significant(t =2.534,14.925,9.541,all P <0.05).Pearson correlation analysis showed the AHI at second night were positive correlated with the lower AHI and lower portions blocking ratio at third night(r =0.638,0.510,all P <0.05).Conclusion Nasopharyngeal airway combined with polysomnography could locate the overnight airway obstruction sites of OSAHS patients,and could be used as a simple base for locating before surgery for relieving upper airway obstruction.