Macnamara M, Phillips D, Proops D W
Department of Otolaryngology, Queen Elizabeth Hospital, Birmingham, UK.
J Laryngol Otol Suppl. 1996;21:38-40. doi: 10.1017/s0022215100136254.
Bone anchored hearing aids are gaining wide acceptability in the treatment of patients with congenital ear problems, chronic suppurative otitis media (CSOM) and in some cases otosclerosis. To date little information on the effect of the bone anchored hearing aid on the symptoms of chronic suppurative otitis is available. This retrospective study based on notes review and telephone interviews was to assess the outcome of bone anchored hearing aid surgery in patients with CSOM in terms of: ear discharge; surgical techniques and complications; the number of hours the aid is worn compared with the previous aid. One hundred and forty-two patients were fitted with bone anchored hearing aids without additional prostheses in Birmingham between 1989 and 1995. Sixty-nine (48.5 per cent) of these were for chronic suppurative otitis media, 45 of these were female and 24 were male with a mean age of 58 years. Most (85 per cent) had undergone previous ear surgery with 65 per cent having mastoid surgery. Ninety-eight per cent of this patient group had undergone single stage surgery and 65 per cent under local anaesthetic as a day case. A variety of techniques for soft tissue reduction were employed. The mean follow-up time for these patients was 24 months (range one month to seven years). No patients experienced worse discharge following their BAHA and 84 per cent had significantly reduced discharge, 16 per cent had no change. Complications included skin reactions, 15; failure to integrate, one; late loss of fixture, three. Seventy-three per cent wore their bone anchored hearing aid more than eight hours per day and 58 per cent were more satisfied with their bone anchored hearing aid than their previous aid.
骨锚式助听器在治疗先天性耳部疾病、慢性化脓性中耳炎（CSOM）患者以及某些情况下的耳硬化症方面正获得广泛认可。迄今为止，关于骨锚式助听器对慢性化脓性中耳炎症状影响的信息很少。这项基于病历回顾和电话访谈的回顾性研究旨在评估CSOM患者骨锚式助听器手术的结果，包括：耳漏；手术技术和并发症；与之前使用的助听器相比佩戴该助听器的时长。1989年至1995年间，在伯明翰有142名患者佩戴了无额外假体的骨锚式助听器。其中69名（48.5%）患者患有慢性化脓性中耳炎，其中45名是女性，24名是男性，平均年龄为58岁。大多数患者（85%）曾接受过耳部手术，65%的患者接受过乳突手术。该患者组中98%接受了一期手术，65%在局部麻醉下作为日间手术进行。采用了多种软组织减少技术。这些患者的平均随访时间为24个月（范围为1个月至7年）。没有患者在佩戴骨锚式助听器后耳漏情况恶化，84%的患者耳漏明显减少，16%的患者没有变化。并发症包括皮肤反应15例；固定失败1例；后期固定装置丢失3例。73%的患者每天佩戴骨锚式助听器超过8小时，58%的患者对骨锚式助听器比之前使用的助听器更满意。
