Value and Application of Upper Airway CT Sagittal Data in the Management of Obstructive Sleep Apnea Syndrome
Objective:To investigate the method to understand the plane of respiratory obstruction and the severity of the condi-tion in patients with obstructive sleep apnea syndrome(OSAHS)by CT of the upper airway.Methods:Polysomnography monitoring and CT scanning of the upper airway with three-dimensional reconstruction were performed in 51 patients.Under-chin hyoid dis-tance,soft palate length,anterior angle of C4 distance in the hyoid plane and minimum vital gap were measured in the sagittal posi-tion of the upper airway.The correlation analysis of each measurement with body mass index,minimum blood oxygen saturation(LSaO2)and apnea hypoventilation index(AHI)was also performed.Results:The under-chin hyoid distance was not correlated with AHI and LSaO2(P＞0.05),and the minimum vital gap was negatively correlated with AHI(P＜0.05)and not correlated with LSaO2(P＞0.05).Soft palate length was positively correlated with AHI(P＜0.01)and negatively correlated with LSaO2(P＜0.01).The minimum airway area and the distance from the anterior angle of C4 in the hyoid plane were both negatively correlated with AHI(P＜0.01)and positively correlated with LSaO2(P＜0.01).Conclusion:The length of the soft palate,the minimum vital space,the minimum airway area,and the distance from the anterior angle of C4 in the hyoid plane in the sagittal CT of the upper airway are meaningful in discriminating the severity of the OSAHS condition,and enable a rapid preliminary determination of the plane of obstruction.
Obstructive sleep apnea syndromeSagittal positionUpper airway CTPlane of obstruction
NETL
NSTL
万方数据
