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Long-term hearing performance and soft tissue outcomes of Baha@ Attract system in patients with bilateral congenital microtia in a single center
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  • Ying Chen,
  • You-zhou Xie,
  • Liu-Jie Ren,
  • Na Gao,
  • Wen-xiu Gu,
  • Chen-long Li,
  • YAOYAO FU,
  • Jun-li Zhang,
  • Tian-yu Zhang
Ying Chen
Fudan University Eye Ear Nose and Throat Hospital
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You-zhou Xie
Fudan University Eye Ear Nose and Throat Hospital
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Liu-Jie Ren
Fudan University Eye Ear Nose and Throat Hospital
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Na Gao
Fudan University Eye Ear Nose and Throat Hospital
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Wen-xiu Gu
Fudan University Eye Ear Nose and Throat Hospital
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Chen-long Li
Fudan University Eye Ear Nose and Throat Hospital
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YAOYAO FU
Fudan University Eye Ear Nose and Throat Hospital
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Jun-li Zhang
Fudan University Eye Ear Nose and Throat Hospital
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Tian-yu Zhang
Fudan University Eye Ear Nose and Throat Hospital
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Abstract

Abstract: Background: Baha Attract System was designed as non-skin penetrating bone conduction implant to minimize skin complication. However, there were insufficient studies on its long-time acoustic outcome and safety in microtia patients with auricle reconstruction surgeries, who have thinner retroauricular subcutaneous layer and theoretically vulnerable skin at the implant side. Objectives: To analysis the long-term hearing performance and soft tissue complications of Baha@ Attract System in microtia population. Study Design & setting: A prospective cohort study at single tertiary referral center. Patients: Twenty Mandarin-speaking patients with congenital bilateral microtia who were underwent Baha@ Attract implantation with or without auricle reconstruction surgeries simultaneously. Main Outcome Measure(s): Comparative analysis of audiological test results including hearing thresholds and speech recognition in quiet and in noise were pre- and post-operatively performed. subjective benefit as measured with the SSQ Scale. Soft tissue outcomes were monitored and documented. Results: The mean follow-up time was 36.11±3.30 months. Significant and stable improvements in hearing threshold and speech understanding in noise and quiet were demonstrated with aided condition. Subject evaluation revealed high level of patients’ satisfaction with the amplification in all the subscales. Adverse events including skin necrosis increased after one year post-operatively. Soft tissue evolution including sin thinning, erythema, epidermis atrophy, soft tissue atrophy, skin necrosis was seen or once developed in most of the participants. However, prevalence of severe soft tissue complication was not higher to non-microtia population. Conclusions: Baha@ Attract System provides favorable and stable hearing improvements for microtia patients. Combining plastic surgeries with implantation will not increase the prevalence of soft tissue complication. However, long-term soft tissue problems should be highly aware of even after one year post implantation. Key words: Baha Attract, microtia, hearing, soft tissue, skin necrosis

Peer review status:ACCEPTED

11 Jul 2021Submitted to Clinical Otolaryngology
19 Jul 2021Submission Checks Completed
19 Jul 2021Assigned to Editor
01 Aug 20211st Revision Received
02 Aug 2021Submission Checks Completed
02 Aug 2021Assigned to Editor
09 Aug 2021Reviewer(s) Assigned
12 Sep 2021Review(s) Completed, Editorial Evaluation Pending
12 Sep 2021Editorial Decision: Revise Minor
07 Oct 20212nd Revision Received
08 Oct 2021Submission Checks Completed
08 Oct 2021Assigned to Editor
10 Oct 2021Reviewer(s) Assigned
12 Nov 2021Review(s) Completed, Editorial Evaluation Pending
13 Nov 2021Editorial Decision: Accept