Khoza-Shangase Katijah, Gautschi-Mills Katherine
Department of Speech Pathology and Audiology, University of the Witwatersrand, Johannesburg.
S Afr J Commun Disord. 2019 Apr 10;66(1):e1-e7. doi: 10.4102/sajcd.v66i1.607.
Increasing access to cochlear implants within the resource-constrained South African context calls for careful investigation of all factors that might influence benefit from this technological advancement.
The aim of this study was to investigate preservation of hearing following cochlear implant surgery and whether a relationship existed between the post-operative hearing findings and certain factors.
Within a quantitative paradigm, a retrospective data review design was adopted where a sample consisting of audiological records from 60 observations and surgical records from two cochlear implant units in South Africa was investigated. These records were selected using purposive sampling and consisted of records from participants ranging from 6 to 59 years. Comparative analysis of unaided audiological test results was pre- and post-operatively performed, where all paitents were implanted with cochlear devices. Factors documented to have a possible influence on post-operative outcomes were examined in an attempt to establish relationships that may exist. Findings were analysed by means of both inferential and descriptive statistics.
The findings indicated 92% success rate in preservation of residual hearing. There was a direct correlation between surgical techniques, as well as cochlear implant type and the successful hearing findings, in the absence of surgical complications. Other factors explored did not have any negative effect on the hearing findings.
The study findings suggest improved surgical outcomes with enhanced surgical techniques and advanced technology, with a clear negative impact of intraoperative complications on the outcomes.
在资源有限的南非环境中，越来越多的人能够使用人工耳蜗，这就需要仔细研究所有可能影响从这项技术进步中获益的因素。
本研究的目的是调查人工耳蜗植入术后听力的保留情况，以及术后听力结果与某些因素之间是否存在关联。
在定量范式内，采用回顾性数据审查设计，对来自南非两个人工耳蜗植入单位的60份听力记录和手术记录组成的样本进行调查。这些记录采用目的抽样法选取，包括6至59岁参与者的记录。对所有植入人工耳蜗装置的患者术前和术后的裸耳听力测试结果进行比较分析。检查记录在案的可能影响术后结果的因素，试图确定可能存在的关系。通过推断性统计和描述性统计对结果进行分析。
结果表明，残余听力保留成功率为92%。在没有手术并发症的情况下，手术技术、人工耳蜗类型与听力成功结果之间存在直接相关性。所探讨的其他因素对听力结果没有任何负面影响。
研究结果表明，随着手术技术的提高和技术的进步，手术效果得到改善，术中并发症对结果有明显的负面影响。
