Mylanus E A, van der Pouw K C, Snik A F, Cremers C W
Department of Otorhinolaryngology, University Hospital Nijmegen, The Netherlands.
Arch Otolaryngol Head Neck Surg. 1998 Mar;124(3):271-6. doi: 10.1001/archotol.124.3.271.
Some patients have to stop using their air-conduction hearing aid(s) because it causes or exacerbates chronic otitis. Then, a solution is the use of a bone-conduction hearing aid such as the percutaneous bone-anchored hearing aid (BAHA).
To compare patients' performance with their previous air-conduction hearing aid(s) and their BAHA using audiometric tests and a questionnaire.
Prospective clinical evaluation in a single subject design.
The results of 34 consecutive patients from the Nijmegen, the Netherlands, BAHA series were included. The patients had bilateral conductive or mixed hearing loss and chronic ear problems. Before the BAHA was fitted, the patients used air-conduction hearing aids.
The results of the speech recognition in noise test showed a small but significant improvement with the BAHA. This improvement was related to the size of the air-bone gap. The greater the air-bone gap, the poorer the results with the air-conduction hearing aid(s). The questionnaire demonstrated that the majority of patients preferred the BAHA; diminished occurrence of ear infections played a significant role. The patients did not express an evident preference concerning speech recognition.
In patients with chronic ear problems a BAHA is an acceptable alternative if an air-conduction hearing aid is contraindicated. Preoperative assessment of the size of the air-bone gap is of some help to predict whether speech recognition may improve or deteriorate with the BAHA compared with the air-conduction hearing aid.
一些患者不得不停止使用气导助听器，因为它会引发或加重慢性中耳炎。那么，一种解决方案是使用骨导助听器，如经皮骨锚式助听器（BAHA）。
通过听力测试和问卷调查比较患者使用先前气导助听器和BAHA的效果。
单病例设计的前瞻性临床评估。
纳入了来自荷兰奈梅亨BAHA系列的34例连续患者的结果。这些患者患有双侧传导性或混合性听力损失以及慢性耳部问题。在佩戴BAHA之前，患者使用气导助听器。
噪声环境下言语识别测试结果显示，使用BAHA后有小幅但显著的改善。这种改善与气骨导间距大小有关。气骨导间距越大，气导助听器的效果越差。问卷调查表明，大多数患者更喜欢BAHA；耳部感染发生率降低起到了重要作用。患者在言语识别方面未表现出明显偏好。
对于有慢性耳部问题的患者，如果气导助听器禁忌，BAHA是一种可接受的替代方案。术前评估气骨导间距大小有助于预测与气导助听器相比，使用BAHA时言语识别是会改善还是恶化。
