Abstract
Purpose(1) To assess the effectiveness and safety of a bone-conduction implant, the Bonebridge BCI 602, in adults with conductive or mixed hearing loss. (2) To investigate whether the Bonebridge BCI 602 is at least as effective as the Bonebridge BCI 601 in such patients.MethodsThe study group included 42 adults who had either conductive or mixed hearing loss. All patients underwent Bonebridge BCI 602 implant surgery. Before and after implantation, pure-tone audiometry, speech recognition tests (in quiet and noise), and free-field audiometry were performed. Word recognition scores were evaluated using the Polish Monosyllabic Word Test. Speech reception thresholds in noise were assessed using the Polish Sentence Matrix Test. Subjective assessment of benefits was done using the APHAB (Abbreviated Profile of Hearing Aid Benefit) questionnaire.ResultsThe APHAB questionnaire showed that difficulties in hearing decreased after BCI 602 implantation. Both word recognition in quiet and speech reception threshold in noise were significantly better after BCI 602 implantation and remained stable for at least 12 months. A significant advantage of the device is a reduced time for surgery while maintaining safety. In this study, the mean time for BCI 602 implantation was 28.3 min ± 9.4.ConclusionsThe second-generation Bonebridge BCI 602 implant is an effective hearing rehabilitation device for patients with conductive or mixed hearing loss. Patient satisfaction and audiological results confirm its efficacy and safety. Its new shape and dimensions allow it to be used in patients previously excluded due to insufficient or difficult anatomical conditions. The new BCI 602 implant is as effective as its predecessor, the BCI 601.
Highlights
There are an increasing number of rehabilitation and treatment options for patients with conductive or mixed hearing loss, and professionals need to be able to inform their patients about their options based on actual experiences and results
The primary aim of this study is to evaluate the effectiveness of the Bonebridge BCI 602 implant in a group of adult patients with conductive or mixed hearing losses
The patients were selected according to the following criteria: patients had to be older than 18 years of age, ear reconstruction was completely finished, cooperative in audiological testing, and hearing thresholds had to accord with the manufacturer’s suggested criteria—conductive or mixed mild-to-moderate hearing loss; pure-tone average (PTA) bone conduction (BC) threshold ≤ 45 dB HL, BC thresholds over the last 12 months were stable, and appropriate anatomical conditions had been confirmed by computed tomography
Summary
There are an increasing number of rehabilitation and treatment options for patients with conductive or mixed hearing loss, and professionals need to be able to inform their patients about their options based on actual experiences and results. The most common treatments for conductive and mixed hearing loss are drugs, middle ear surgery, hearing aids, bone-conduction hearing implants, or a combination of these [1, 2]. For adults with conductive or mixed hearing loss, there are a number of devices on the market that are based on bone-conduction amplification. The devices differ both visually and functionally. An important aspect is the fitting range of the device and the method of placement
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