Objective To explore the influence of Eustachian tube function on hearing via analyzing the clinical data of patients with chronic suppurative otitis media undergoing endoscopic type Ⅰ tympanoplasty.Methods A total of 42 patients with chronic suppurative otitis media were collected,and were divided into the study group(n=25)with Eustachian tube dysfunction and the control group(n=17)with normal Eustachian tube function based on the sound conduction anti-positive and negative pressure balance test and the Eustachian tube dysfunction scoring scale(ETDQ-7).The changes of hearing before and after tympanoplasty were compared between the two groups.Results The pre-and postoperative average hearing thresholds of air conduction and bone conduction in the study group were higher than those in the control group,and the differences were statistically significant(P＜0.05).The improvement values of average thresholds of air conduction and bone conduction in the study group were higher than those in the control group,but the differences were statistically insignificant(P＞0.05).The improvement value of air conduction threshold on 4 kHz of the study group was lower than that of the control group,but the difference was statistically insignificant(P＞0.05).The improvement value of air conduction threshold on 8 kHz of the study group was lower than that of the control group,and the difference was statistically significant(P＜0.05).Conclusion Good Eustachian tube function can not increase the degree of postoperative average hearing improvement in patients with chronic suppurative otitis media,but is beneficial to the recovery of high-frequency hearing.
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