Mylanus E A, Snik A F, Cremers C W
Department of Otorhinolaryngology, University Hospital, Nijmegen, The Netherlands.
Scand Audiol. 1994;23(3):201-3. doi: 10.3109/01050399409047509.
Percutaneous and transcutaneous bone-conduction thresholds were obtained at 0.25, 0.5, 1, 2, and 4 kHz in 57 patients who were fitted with the Bone Anchored Hearing Aid (BAHA). Additionally, the thickness of the skin and subcutaneous tissue covering the mastoid was determined. No relation was found between the thickness of the skin and subcutaneous tissue, and the improvement in bone-conduction thresholds at any of the frequencies, i.e. thresholds obtained percutaneously minus transcutaneously. The improvement (or deterioration) in speech recognition with the BAHA in a subgroup of patients who had previously used a (conventional) transcutaneous bone-conduction hearing aid was not related to the thickness of the skin and subcutaneous tissue layers. Therefore, the thickness of the skin and subcutaneous tissue layers measured pre-operatively cannot be used as a predictor of successful fitting with a BAHA.
对57名佩戴骨锚式助听器（BAHA）的患者，分别在0.25、0.5、1、2和4 kHz频率下测量经皮和经皮骨传导阈值。此外，还测定了覆盖乳突的皮肤和皮下组织厚度。未发现皮肤和皮下组织厚度与任何频率下骨传导阈值的改善情况（即经皮测量阈值减去经皮测量阈值）之间存在关联。在先前使用过（传统）经皮骨传导助听器的部分患者中，使用BAHA后言语识别能力的改善（或恶化）与皮肤和皮下组织层的厚度无关。因此，术前测量的皮肤和皮下组织层厚度不能作为BAHA成功适配的预测指标。
