Otorhinolaryngology Clinic, University of Perugia, Perugia, Italy.
Eur Arch Otorhinolaryngol. 2010 Oct;267(10):1539-45. doi: 10.1007/s00405-010-1293-0. Epub 2010 Jun 10.
The aim of this work is to reexamine our experience with the treatment of conductive and mixed hearing loss using the Baha system. The system was implanted in 47 patients (16 adults and 31 children under the age of 14), bilaterally in two cases. The causes of hypoacusis were bilateral congenital aural atresia (31 patients), bilateral chronic otitis media or outcomes of middle-ear surgery (Gillett et al. in J laryngol Otol 120:537-542, 2006), and otosclerosis (Pazzaglia et al. in Acta Orthop Scand 54:574-579, 1983). The following parameters were assessed: mean preoperative air- and bone-conduction thresholds for the frequencies of 500, 1,000, 2,000 and 4,000 Hz; mean postoperative threshold with the Baha; hearing improvement calculated by subtracting the postoperative threshold with the Baha from the preoperative threshold for air conduction in the better ear; speech audiometry test; improvement in the quality of life, calculated using the Glasgow Benefit Inventory for the adult patients and the Glasgow Children's Benefit Inventory for paediatric patients; frequency and type of surgical complications. Follow-up ranged from 6 to 38 months. The audiological results were satisfactory, with air-bone gap closure in 85.1% of cases. In terms of quality of life, assessment using the Glasgow Benefit Inventory showed a clear-cut improvement in health for all the 45 patients that answered to the questionnaires in our study. Out of the 49 operations that were performed, complications were reported in 3 cases (6.1%): 2 cases of skin regrowth around the titanium screw and one in which the abutment was not osseointegrated. The data from this study show that the Baha system offers a high percentage of success, which can significantly improve the patient's quality of life, and a low rate of complications.
本研究旨在重新评估我们使用 Baha 系统治疗传导性和混合性听力损失的经验。该系统共植入 47 例患者（16 例成人和 31 例 14 岁以下儿童），其中 2 例为双侧。听力下降的原因包括双侧先天性外耳闭锁（31 例）、双侧慢性中耳炎或中耳手术结果（Gillett 等人，J Laryngol Otol 120:537-542, 2006）和耳硬化症（Pazzaglia 等人，Acta Orthop Scand 54:574-579, 1983）。评估了以下参数：500、1000、2000 和 4000Hz 频率的平均术前气导和骨导阈值；Baha 术后的平均阈值；通过从较好耳的术前气导阈值中减去 Baha 术后阈值来计算听力改善；言语测听测试；使用格拉斯哥受益量表（成人患者）和格拉斯哥儿童受益量表（儿童患者）计算生活质量改善；手术并发症的频率和类型。随访时间为 6 至 38 个月。听力结果令人满意，85.1%的病例气骨导差闭合。在生活质量方面，格拉斯哥受益量表评估显示，在我们研究中回答问卷的 45 例患者中，健康状况明显改善。在进行的 49 例手术中，报告了 3 例并发症（6.1%）：2 例钛螺钉周围皮肤再生，1 例基台未骨整合。本研究数据表明，Baha 系统具有较高的成功率，可显著改善患者的生活质量，并发症发生率较低。
