Cochlear implantation in Mondini’s deformity: could the straight electrode array with length of 31 mm be fully inserted?

Abstract

Conclusions: The straight electrode array with length of 31 mm can be fully inserted using round window insertion in cochlear implantation with Mondini’s deformity. It is a safe and effective process, but also a challenging task of the full implantation in children with Mondini’s deformity.

Objective: The aim of this study is to discuss whether the straight electrode array with a length of 31 mm could be fully inserted in cochlear implantation with Mondini’s deformity.

Methods: A chart review of 30 patients undergoing cochlear implantation with Mondini’s deformity using the electrode array with length of 31 mm was undertaken from January 2012 and December 2015 in Anhui Provincial Hospital.

Results: Full insertion of the straight electrode array with length of 31 mm were performed successfully in all patients with Mondini’s deformity using round window insertion. Resistance was not encountered while introducing the electrodes. Ten of 30 patients had cerebrospinal fluid drainage during cochlear implantation. Cerebrospinal fluid drainage was controlled with small pieces of temporalis fascia packing round window in all patients. Intra-operative neural response telemetry was performed in all patients, and results were good. The result of X-ray showed proper placement of the cochlear implant electrode array. During surgery, no patients had experienced any immediate or delayed post-operative complications such as wound infection, intracranial complication, extrusion, or migration of the implant during an average follow-up period of 6–36 months.

Chinese abstract

结论 长度为31 mm的直电极列可以通过圆窗完全插入在患曼迪尼Mondini畸形的耳蜗植入中。这是一个安全有效的手术, 但是, 完全植入患Mondini畸形的儿童, 也是一个具有挑战性的任务。

目的 本研究的目的是讨论长度为31 mm的直电极列是否可以完全插入患有Mondini畸形的耳蜗植入中。

方法 自2012年1月至2015年12月在安徽省医院进行了对30例患者的回顾性分析。这些患有曼迪尼畸形的患者接受了使用长度为31 mm的电极列的人工耳蜗植入手术。

结果 使用圆窗插入法对所有Mondini畸形患者成功地进行了长度为31mm的直电极阵列完全插入手术。在引入电极时未遇到阻力。 30例患者中有10例在耳蜗植入过程中有脑脊液引流。所有患者都经受用小片颞叶筋膜包装圆窗控制脑脊液引流。所有患者都接受了术中神经反应遥测, 结果良好。 X光检查结果显示耳蜗植入电极阵列的位置适当。在手术期间及在6-36个月的平均随访期间, 没有患者经历任何立即或滞后的术后并发症, 例如伤口感染、颅内并发症、植入物的挤出或位移。

Keywords:

• Cochlear implantation
• Mondini’s deformity
• electrode array
• straight

Disclosure statement

The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.