Anagiotos Andreas, Hamdan Nadin, Lang-Roth Ruth, Gostian Antoniu-Oreste, Lüers Jan-Christoffer, Hüttenbrink Karl-Bernd, Beutner Dirk
University of Cologne, Medical Faculty, Department of Otorhinolaryngology, Head and Neck Surgery, Cologne, Germany.
Otol Neurotol. 2015 Jan;36(1):28-33. doi: 10.1097/MAO.0000000000000586.
To investigate the prognostic significance of various factors in hearing preservation after traditional cochlear implantation (CI).
Retrospective case review.
Academic tertiary referral center.
A total of 153 implantations with mean patient age at implantation of 36 years (from 10 mo to 83 yr) and residual hearing at the frequencies 250, 500, and 1,000 Hz on the unaided preoperative pure-tone audiometry were included.
INTERVENTION(S): CI with a conventional full-length electrode.
MAIN OUTCOME MEASURE(S): The changes on the residual hearing 3 months after implantation were analyzed regarding patients' demographic factors, shape of the preoperative threshold curve, type of the electrode carrier, and approach of electrode insertion in the cochlea. Preservation of residual hearing was defined as measurable postoperative threshold at the frequencies 250, 500, and 1,000 Hz.
Preservation of residual hearing was observed in almost half of the cases (47%). In more than half of these patients (54%), a maximal to complete hearing preservation (0-10 dB loss) was achieved. About one-third of these implantations (29%) showed a moderate preservation of residual hearing (11-20 dB loss). In the remaining 17%, the preservation of hearing was marginal (>21 dB loss). Hearing preservation and its extent were significantly better in children and adolescents compared with those in adults.
The preservation of residual hearing after conventional CI is possible. Young age seems to have a positive impact on hearing preservation.
探讨传统人工耳蜗植入（CI）后听力保留的各种因素的预后意义。
回顾性病例分析。
学术性三级转诊中心。
共纳入153例人工耳蜗植入病例，植入时患者平均年龄为36岁（10个月至83岁），术前纯音听力计检查显示在250、500和1000Hz频率处有残余听力。
采用传统全长电极进行人工耳蜗植入。
分析植入后3个月残余听力的变化，涉及患者人口统计学因素、术前阈值曲线形状、电极载体类型以及电极插入耳蜗的方式。残余听力保留定义为术后在250、500和1000Hz频率处可测量的阈值。
几乎一半的病例（47%）观察到残余听力保留。在这些患者中，超过一半（54%）实现了最大程度至完全听力保留（听力损失0 - 10dB）。约三分之一的植入病例（29%）显示残余听力中度保留（听力损失11 - 20dB）。其余17%的病例中，听力保留情况较差（听力损失>21dB）。与成年人相比，儿童和青少年的听力保留及其程度明显更好。
传统人工耳蜗植入后保留残余听力是可能的。年轻似乎对听力保留有积极影响。
