Longitudinal development of wideband reflectance tympanometry in normal and at-risk infants.
Longitudinal development of wideband reflectance tympanometry in normal and at-risk infants.
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DOI：
10.1016/j.heares.2015.12.014
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发表时间：
2016-10
期刊：
影响因子：
2.8
通讯作者：
Lin, Li
中科院分区：
文献类型：
--
作者：
Hunter, Lisa L.;Keefe, Douglas H.;Feeney, M. Patrick;Fitzpatrick, Denis F.;Lin, Li
本研究的目的是测量正常特征的环境和鼓室宽带声反射，这是参数化的吸光度和群延迟，在新生儿照顾的婴儿和新生儿重症监护室（NICU）托儿所，并对一组临床听力正常的婴儿在出生后第一年内反射率的正常发展进行表征，年龄。婴儿从一个良好的婴儿和NICU托儿所招募，通过新生儿耳声发射（OAE）和自动听觉脑干反应（ABR）测试以及后续诊断ABR和测听。他们进行了长达一年的纵向测试，使用宽带中耳声学测试电池组成的鼓室压和环境压力测试。结果进行了分析，跨频率的环境反射率和跨频率和压力的鼓室反射率。宽带吸光度和组延迟在前6个月显示出较大的年龄效应。不成熟的吸光度和组延迟模式是明显的低频率在出生时和一个月，但改变了很大的更像成人的模式，由6个月的年龄为环境和鼓室参数。面积和长度的耳道估计声学增加到1岁。种族（非裔美国人和其他与高加索人相比）的影响与年龄的影响相结合。提供了平均值和置信区间，用作新生儿和1岁以下婴儿（健康婴儿和NICU婴儿）的规范性纵向数据库。
The goals of this study were to measure normal characteristics of ambient and tympanometric wideband acoustic reflectance, which was parameterized by absorbance and group delay, in newborns cared for in well-baby and Neonatal Intensive Care Unit (NICU) nurseries, and to characterize the normal development of reflectance over the first year after birth in a group of infants with clinically normal hearing status followed longitudinally from birth to one year of age. Infants were recruited from a well-baby and NICU nursery, passed newborn otoacoustic emissions (OAE) and automated auditory brainstem response (ABR) tests as well as follow-up diagnostic ABR and audiometry. They were tested longitudinally for up to one year using a wideband middle ear acoustic test battery consisting of tympanometry and ambient-pressure tests. Results were analyzed for ambient reflectance across frequency and tympanometric reflectance across frequency and pressure. Wideband absorbance and group delay showed large effects of age in the first 6 months. Immature absorbance and group delay patterns were apparent in the low frequencies at birth and one month, but changed substantially to a more adult-like pattern by age 6 months for both ambient and tympanometric variables. Area and length of the ear canal estimated acoustically increased up to age 1 year. Effects of race (African American and others compared to Caucasian) were found in combination with age effects. Mean and confidence intervals are provided for use as a normative longitudinal database for newborns and infants up to one year of age, for both well-baby and NICU infants.
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影响因子：
3.7
作者：
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