Universidade Federal de São Paulo-UNIFESP/ Escola Paulista de Medicina.
Braz J Otorhinolaryngol. 2009 Jan-Feb;75(1):80-9. doi: 10.1016/s1808-8694(15)30836-3.
Audiological evaluation in infants should include the middle ear (immitance measures and otoscopy) and also a cochlear evaluation.
To check which tympanometry tone test (226 Hz or 1000 Hz), transient otoacoustic emissions and otoscopy.
Transient otoacoustic emissions were taken from sixty infants ranging from zero to four months of age. The babies were assigned to two groups of 30 infants each, according to the presence or absence of otoacoustic emissions (OAE). All babies have undergone tympanometry with probe tones of 226 and 1000 Hz and ENT evaluation.
Tests performed with 1000 Hz probe tone were more sensitive in identifying middle ear disorders. In children with normal tympanograms, both probe tones (226 and 1000 Hz) showed high specificity. All correlations were significant when the 1000 Hz probe tone was used.
The high frequency probe tone (1000 Hz) presented the most significant correlation with OAE and otoscopy in infants from zero to four months of age.
婴儿的听力学评估应包括中耳（导抗测试和耳镜检查）和耳蜗评估。
检查哪种鼓室声导抗测试（226Hz 或 1000Hz）、瞬态耳声发射和耳镜检查。
对 60 名年龄从 0 到 4 个月的婴儿进行瞬态耳声发射测试。根据是否存在耳声发射（OAE），将婴儿分为两组，每组 30 名。所有婴儿均进行了 226Hz 和 1000Hz 探测音的鼓室声导抗测试和 ENT 评估。
使用 1000Hz 探测音进行的测试在识别中耳疾病方面更敏感。在正常鼓室图的儿童中，两种探测音（226Hz 和 1000Hz）均表现出高特异性。当使用 1000Hz 探测音时，所有相关性均具有统计学意义。
在 0 到 4 个月大的婴儿中，高频探测音（1000Hz）与 OAE 和耳镜检查的相关性最强。
