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目的分析听力初筛未通过新生儿声导抗的特点,为新生儿听力筛查提供参考依据。方法将耳声发射初筛未通过的31例(47耳)新生儿作为研究对象,并选择初筛通过的55耳作为对照组,采用GSI中耳分析仪对两组进行中耳功能测试,收集1000 Hz声导抗及250~2000 Hz多频率扫描声导抗图。运用SPSS 16.0统计学软件对中耳共振频率、补偿静态声纳值(ΔB)、补偿静态相位角(Δθ)的测量结果进行统计学处理。结果将试验组47耳和对照组55耳鼓室导抗图的声导纳Y分型进行比较,差异具有统计学意义(P<0.05)。并比较两组的中耳共振频率,差异具有统计学意义(P<0.05)。ΔB、Δθ差异无统计学意义。结论正常听力新生儿1000 Hz声导纳图Y以单峰型为主;初筛未过新生儿中耳共振频率低于通过初筛新生儿,多频扫描可尝试应用在新生儿听力筛查中。
OBJECTIVE: To analyze the characteristics of initial hearing screening which failed to pass the newborn’s acoustic guidance and provide a reference for newborn hearing screening. Methods Totally 31 newborn (47 ears) neonates who did not pass the otoacoustic emission primary screening were selected as experimental subjects. Fifty-five ears of primary screening were selected as the control group. Middle ear tests were performed on both groups using the GSI middle ear analyzer. 1000 Hz acoustic impedance and 250 ~ 2000 Hz multi-frequency scanning acoustic impedance diagram. The SPSS 16.0 statistical software was used to calculate the measurement results of the middle ear resonance frequency, the compensated static sonar value (ΔB) and the compensated static phase angle (Δθ). Results The acoustic admittance (Y) classification of the tympanogram of the 47 ears of the experimental group and the control group 55 was statistically significant (P <0.05). The frequencies of middle ear resonance were compared between the two groups, the difference was statistically significant (P <0.05). ΔB, Δθ difference was not statistically significant. Conclusions The monoadaptor pattern of Y at 1000 Hz in normal hearing newborns is predominately unimodal; the frequency of middle ear resuscitation is lower than that of primary neonates, and multifrequency scanning can be used in newborn hearing screening .