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首页> 外文期刊>British Journal of Audiology >Tympanometry and otoacoustic emissions in a cohort of special care neonates
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Tympanometry and otoacoustic emissions in a cohort of special care neonates

机译：一组特殊护理新生儿的鼓室图和耳声发射

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摘要

Otoacoustic emission (OAE) screening and oto-admittance testing (678 Hz probe tone) were performed on both ears of 84 special care neonates, as part of a larger study of middle-ear effusion in neonates and infants. OAE results, tympanometry, and acoustic reflex results are all strongly and significantly associated. No evidence was found of any maturational effects in the results. Based on the findings, a tentative classification scheme for neonatal tympanograms is suggested. We conclude that 678 Hz tympanometry is a useful indicator of middle-ear status in very young babies, and that middle-ear effusion does strongly affectOAEs in neonates. OAEs are also strongly affected by negative middle-ear pressure (MEP), and mean MEP in ears failing OAE screens was significantly more negative than in those passing. The prevalence of abnormal tympanometry, which may indicate middle-ear effusion or dysfunction, was 20% of ears (29% of babies) in this group. It appears that middle-ear effusion could account for about half of the ears failing an OAE screen on the special care baby unit. We also find that length of stay on the special care baby unit is an important risk factor for development of middle-ear effusion: those on the unit for over 30 days have about four times the risk of bilateral abnormal tympanometry.
机译：在84名特殊护理新生儿的两只耳朵上进行了耳声发射（OAE）筛查和耳导率测试（678 Hz探测音），作为对新生儿和婴儿中耳积液的一项较大研究的一部分。 OAE结果，鼓室图和听觉反射结果都紧密相关。没有证据表明结果有任何成熟作用。根据这些发现，提出了一种暂定的新生儿鼓室图分类方案。我们得出的结论是678 Hz鼓室图是非常幼小的婴儿中耳状态的有用指标，并且中耳积液确实对新生儿的OAE有强烈影响。 OAE还受到负中耳压（MEP）的强烈影响，并且OAE筛查失败的耳朵中的平均MEP显着高于经过者。该组中鼓室异常的患病率可能是中耳积液或功能障碍，占耳朵的20％（婴儿的29％）。在特殊护理婴儿床的OAE筛查中，中耳积液似乎占耳朵的一半左右。我们还发现，在特殊护理婴儿病房停留的时间是中耳积液发展的重要危险因素：在病房停留30天以上的人患双侧鼓室异常的风险约为其四倍。

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