体位变化对咽鼓管异常开放患者咽口形态的影响OA

Objective To investigate the impact of postural changes on morphology of the pharyngeal orifice of the Eustachian tube in patients with patulous Eustachian tube(PET),to provide evidence for clinical diagnosis and treatment.Methods Imaging data of the Eustachian tube orifice from 42 PET patients admitted to our hospital between June 2020 and December 2024 were retrospectively analyzed.Among these patients,30 presented with tympanic membrane flutter synchronous with respiration.A control group(n=20)was included for comparison.A diagnostic model for Eustachian tube orifice images was constructed.All patients underwent nasopharyngoscopy in both sitting and lying positions,and comprehensive morphology scores of the Eustachian tube orifice were assigned separately for each posture.Results The diagnostic model for Eustachian tube orifice images achieved a recognition accuracy of 95%.The pharyngeal orifice score in the lying position was significantly lower than that in the sitting position(median difference=-1.000,P＜0.001).Spearman correlation analysis confirmed the validity of the paired comparisons(rs=0.564,P＜0.001).No significant differences were found in the scores for mucosal condition and dynamic function between the two postures(P＞0.05).Conclusions The deep learning-based image diagnostic model for PET constructed in this study can accurately identify the morphology of the Eustachian tube orifice,providing a tool for investigation into the effect of posture.The scoring system refined based on observed morphological changes revealed that postural changes significantly affect the morphology of the Eustachian tube orifice,with the degree of opening being smaller in the lying position compared to the sitting position.No statistically significant differences were found in the scores for mucosal condition and dynamic function between the sitting and lying positions in this study.