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目的:探讨正常新生儿多频探测音鼓室声导抗图的图型、声导纳值、声纳值和声导值的正常范围。方法:使用GSI-33中耳分析仪,对足月顺产并通过瞬态诱发性耳声发射和畸变产物耳声发射筛查的新生儿55例(110耳)进行226、6781、000 Hz探测音鼓室声导抗测试,对比分析各种探测音鼓室声导抗的图形,声导纳值、声纳值和声导值,并进行统计学分析。结果:226 Hz探测音鼓室声导纳图、声纳图和声导图以双峰型为主,分别占90.0%、99.1%和85.5%,少数为单峰型,无多峰型出现;678 Hz探测音鼓室声导纳图、声纳图和声导图以单峰型为主,分别占62.7%、77.3%和62.7%,双峰型分别占34.6%、20.9%和31.8%,少数出现三峰型;1 000 Hz探测音鼓室声导纳图、声纳图和声导图以单峰型为主,分别占96.4%、99.1%和97.3%,极少数为双峰型,无三峰型出现。226 Hz与678 Hz探测音测试,鼓室声导纳值与声纳值、声纳值与声导值的均差异有统计学意义(均P<0.05);声导纳值与声导值差异无统计学意义(P>0.05)。1 000 Hz探测音测试,鼓室声导纳值、声纳值与声导值的两两比较均差异有统计学意义(均P<0.05)。结论:获得正常新生儿多频探测音鼓室声导抗图的图形、声导纳值、声纳值和声导值的正常范围,结果提示,1 000 Hz探测音鼓室声导抗测试可以较好反映正常新生儿的中耳功能。
OBJECTIVE: To investigate the normal range of acoustic impedance maps, acoustic admittance values, sonar values and acoustic guidance values of normal newborns with multi-frequency sounding probe. METHODS: A total of 226,6781,000 Hz probing sounds were obtained from 55 (110 ears) neonates who were term-delivered and transiently evoked otoacoustic emissions and distortion product otoacoustic emissions using a GSI-33 middle ear analyzer The tympanometry was conducted to compare and analyze the graph, the acoustic admittance, the sonar and the acoustic conductance of acoustic probe of various sounding drums and to conduct statistical analysis. Results: The acoustic admittance, sonar and acoustic maps of the 226 Hz probe sounding room were dominated by bimodal patterns, accounting for 90.0%, 99.1% and 85.5% respectively, with a few being unimodal and no multimodal. 678 Hz sonotrode and sonar charts were dominated by unimodal patterns, accounting for 62.7%, 77.3% and 62.7% respectively, and bimodal patterns accounting for 34.6%, 20.9% and 31.8% respectively, with a few occurrences Three-peak type. The acoustic admittance, sonar and acoustic maps of 1 000 Hz sounding drums were dominated by monomodal types, accounting for 96.4%, 99.1% and 97.3% respectively, with very few being bimodal and without trimodal . 226 Hz and 678 Hz test sound test, the differences between the acoustic admittance value and the sonar value, the sonar value and the acoustic guidance value were statistically significant (all P <0.05); the difference between the acoustic admittance value and the acoustic conductance value Statistical significance (P> 0.05). In the 1 000 Hz probe sound test, the tympanic acoustic admittance value, sonar value and sound guide value were significantly different (all P <0.05). CONCLUSIONS: The normal range of acoustic impedance, sonar, and sonar values for normal neonatal multi-frequency sounding tympanometry is obtained. The results suggest that the acoustic impedance of the 1 000 Hz sounding drum can be better Reflect the normal newborn’s middle ear function.