Swanepoel De Wet, Werner Sonia, Hugo René, Louw Brenda, Owen Rina, Swanepoel André
Department of Communication Pathology, University of Pretoria, South Africa.
Acta Otolaryngol. 2007 Jan;127(1):49-56. doi: 10.1080/00016480600740563.
High frequency immittance measurements demonstrate promise in clarifying middle ear status for neonates but age- and gender-specific norms should be consulted.
To describe high frequency immittance measurements using a 1000 Hz probe tone for a sample of 278 neonatal ears (0-4 weeks of age) in order to compile normative tympanometric and acoustic reflex criteria.
Assessment of neonatal ears included 1000 Hz probe tone immittance measurements (tympanograms and ipsilateral acoustic reflexes), and distortion product oto-acoustic emission (DPOAE) screening. Results were compared and normative values were compiled for immittance measures in ears controlled for normal middle ear functioning (n=250).
Comparison of immittance results to OAE screening outcome provides estimates of sensitivity and specificity for middle ear fluid with tympanometry of 57% and 95%, and 57% and 90% for acoustic reflex presence, and 58% and 87% for combined tympanogram and acoustic reflex results, respectively. Normative data indicate that static peak admittance values differ significantly across gender and age with the 5th percentile cut-off value for the entire sample at 1.4 mmho. The 90% range of tympanic peak pressure normative values increases with increasing age from 140 daPa for neonates 1 week of age to 210 daPa for neonates 2-4 weeks of age. Acoustic reflexes were elicited at 93+/-9 dB with a 90% normality range of 80-105 dB.
高频声导抗测量在明确新生儿中耳状况方面显示出前景，但应参考年龄和性别特异性标准。
描述对278只新生儿耳（0至4周龄）样本使用1000赫兹探测音进行高频声导抗测量，以编制鼓室图和听觉反射的标准。
对新生儿耳的评估包括1000赫兹探测音声导抗测量（鼓室图和同侧听觉反射）以及畸变产物耳声发射（DPOAE）筛查。比较结果并为中耳功能正常的耳（n = 250）的声导抗测量编制标准值。
将声导抗结果与OAE筛查结果进行比较，得出鼓室图对中耳积液的敏感性和特异性估计值分别为57%和95%，听觉反射出现的敏感性和特异性估计值分别为57%和90%，鼓室图和听觉反射联合结果的敏感性和特异性估计值分别为58%和87%。标准数据表明，静态峰值导纳值在性别和年龄上存在显著差异，整个样本的第5百分位数截止值为1.4毫姆欧。鼓室峰值压力标准值的90%范围随着年龄增长而增加，从1周龄新生儿的140达帕增加到2至4周龄新生儿的210达帕。听觉反射在93±9分贝时引出，正常范围的90%为80至105分贝。
