Pires Joana Sanches, Melo Ana Sofia, Caiado Ricardo, Martins Jorge Humberto, Elói Moura João, Silva Luís Filipe
a Department of Otolaryngology , Coimbra Hospital and University Centre , Av. Bissaya Barreto - Praceta Prof. Mota Pinto, Coimbra 3000-075 , Portugal.
b Department of Otolaryngology , Leiria Hospital Centre, Rua das Olhalvas, 2410-197 , Leiria , Portugal.
Cochlear Implants Int. 2018 Jul;19(4):193-197. doi: 10.1080/14670100.2018.1452561. Epub 2018 Mar 25.
Facial nerve stimulation (FNS) after cochlear implant activation is a well-known side effect, with an incidence rate raging between 1% and 14.9%. Some causes of deafness have been associated with a higher incidence of this entity, however, there is still no consensus regarding its pathophysiological mechanisms. Although FNS can be solved with changes in speech processor programming, in some cases this can lead to a decrease in performance. The aim of this work was to review the epidemiologic, clinical aspects, and performance results in a group of FNS after cochlear implantation. It was conducted a retrospective chart review of 448 adult patients, all implanted between 1985 and 2016. Speech perception tests results were statistically analysed, using non-parametric tests. We registered a group of 13 patients with FNS, contributing to a prevalence of 2.9%. The causes of hearing loss in this group varied between otosclerosis, Menière's disease, head trauma, and idiopathic cause. Six cases were managed by changing the programming strategy and the other seven required the deactivation of the affected electrodes. Statistical evaluation showed no statistically significant difference between the performance results of the groups with and without FNS. In this series, the overall incidence of FNS was consistent with the literature. Our study supports the current idea that FNS can frequently be eliminated by changing programming strategies or deactivating the involved electrodes, without affecting the implant's performance.
人工耳蜗激活后出现面神经刺激（FNS）是一种众所周知的副作用，发生率在1%至14.9%之间。一些耳聋病因与该情况的较高发生率相关，然而，关于其病理生理机制仍未达成共识。尽管FNS可通过改变言语处理器程序来解决，但在某些情况下这可能导致性能下降。这项工作的目的是回顾一组人工耳蜗植入后发生FNS患者的流行病学、临床情况及性能结果。对1985年至2016年间植入人工耳蜗的448例成年患者进行了回顾性病历审查。使用非参数检验对言语感知测试结果进行了统计分析。我们记录了一组13例FNS患者，患病率为2.9%。该组听力损失的病因包括耳硬化症、梅尼埃病、头部外伤和特发性病因。6例通过改变编程策略进行处理，另外7例需要停用受影响的电极。统计评估显示，有FNS组和无FNS组的性能结果之间无统计学显著差异。在本系列研究中，FNS的总体发生率与文献一致。我们的研究支持当前的观点，即FNS通常可通过改变编程策略或停用相关电极来消除，而不影响植入物的性能。
