Gründer I, Seidl R O, Ernst A, Todt I
HNO-Klinik am Unfallkrankenhaus Berlin, Warener Strasse 7, 12683, Berlin, Deutschland.
HNO. 2008 Oct;56(10):1020-4. doi: 10.1007/s00106-007-1608-7.
Bone-anchored hearing aids provide a therapy option for patients with conductive and mixed hearing loss, with the possibility of audiological rehabilitation. Test rod and tension headband offer the patient a preoperative impression of their postoperative hearing. The aim of this study was to evaluate the tools available for preoperative assessment of candidates for bone-anchored hearing aids and to ascertain predictive audiometric values.
Following implantation of a BAHA Compact system, sound and speech audiograms were performed in each of 16 patients with the bone-anchored BAHA device and with test rod and tension headband.
Both with the BAHA and with the test devices, closure of the air-bone gap occurred and resulted in a clear improvement in hearing threshold and speech perception. The threshold increase with the BAHA was 9 dB greater on average (mean) than that measured with the test rod and the tension headband. Examinaation of speech perception indicated a mean advantage of 14-20% for the anchored BAHA system over the tension headband in monosyllabic testing.
Preoperative testing before providing a BAHA system is a good way of predicting what level of hearing and speech perception can be expected after implantation.
骨锚式助听器为传导性和混合性听力损失患者提供了一种治疗选择，具有听力康复的可能性。测试杆和张力头带能让患者对术后听力有一个术前印象。本研究的目的是评估可用于骨锚式助听器候选者术前评估的工具，并确定预测听力测定值。
在植入BAHA Compact系统后，对16名佩戴骨锚式BAHA装置以及测试杆和张力头带的患者分别进行了纯音听力图和言语听力图检查。
使用BAHA和测试装置时，气骨导间距均缩小，听力阈值和言语感知明显改善。与测试杆和张力头带相比，BAHA平均阈值升高幅度大9dB。言语感知检查表明，在单音节测试中，植入式BAHA系统比张力头带平均有14%-20%的优势。
在提供BAHA系统之前进行术前测试是预测植入后预期听力和言语感知水平的好方法。
