Dale O T, McCann L J, Thio D, Wells S C, Drysdale A J
ENT Department, Musgrove Park Hospital, Taunton, UK.
J Laryngol Otol. 2011 Jul;125(7):692-5. doi: 10.1017/S0022215111000570. Epub 2011 Apr 27.
This study aimed to evaluate the sensitivity of transient evoked otoacoustic emission testing as a screening tool for hearing loss in children, after grommet insertion.
A prospective study was conducted of 48 children (91 ears) aged three to 16 years who had undergone grommet insertion for glue ear. At post-operative review, pure tone audiometry was performed followed by transient evoked otoacoustic emission testing. Outcomes for both tests, in each ear, were compared.
The pure tone audiometry threshold was ≤ 20 dB in 85 ears (93.4 per cent), 25 dB in two ears (2.2 per cent) and ≥ 30 dB in four ears (4.4 per cent). Transient evoked otoacoustic emissions were detected in 69 ears (75.8 per cent). The sensitivity of transient evoked otoacoustic emission testing for detecting hearing loss was 100 per cent for ≥ 30 dB loss but only 66.7 per cent for ≥ 25 dB loss.
Transient evoked otoacoustic emission testing offers a sensitive means of detecting hearing loss of ≥ 30 dB following grommet insertion in children. However, the use of such testing as a screening tool may miss some cases of mild hearing loss.
本研究旨在评估鼓膜置管术后瞬态诱发耳声发射测试作为儿童听力损失筛查工具的敏感性。
对48名年龄在3至16岁因胶耳接受鼓膜置管术的儿童（91只耳）进行了一项前瞻性研究。术后复查时，先进行纯音听力测试，然后进行瞬态诱发耳声发射测试。比较每只耳两种测试的结果。
纯音听力测试阈值≤20 dB的有85只耳（93.4%），25 dB的有2只耳（2.2%），≥30 dB的有4只耳（4.4%）。69只耳（75.8%）检测到瞬态诱发耳声发射。瞬态诱发耳声发射测试检测听力损失的敏感性，对于≥30 dB的损失为100%，但对于≥25 dB的损失仅为66.7%。
瞬态诱发耳声发射测试为检测儿童鼓膜置管术后≥30 dB的听力损失提供了一种敏感的方法。然而，将这种测试用作筛查工具可能会遗漏一些轻度听力损失的病例。
