BC Children's Hospital, 4500 Oak St, Vancouver, BC, V6H 3N1, Canada.
Pontificia Universidad Xaveriana, Carrera 7 No. 40 - 62, Bogotá D.C, Colombia.
Int J Pediatr Otorhinolaryngol. 2023 Mar;166:111460. doi: 10.1016/j.ijporl.2023.111460. Epub 2023 Jan 23.
Cochlear implantation is indicated for pediatric patients with bilateral severe to profound sensorineural hearing loss. The literature reports large variability in cochlear implant (CI) device survival and rates of explantation and reimplantation. This retrospective chart review summarizes CI survival and rates of explantation and reimplantation in pediatric CI recipients at a Canadian tertiary pediatric hospital over 32 years.
A retrospective chart review of all pediatric patients who received a Cochlear Corporation® CI between April 1988 and June 2020 was undertaken. Rates of explantation/reimplantation were collected and categorized based on device type and reason for failure (medical, device, and inconclusive failure). Device survival analysis based on implant model was also completed utilizing Kaplan-Meier curves.
512 CIs were implanted over the 32-year period by four surgeons (77.1%, 18.16%, 4.49%, and 0.20%, respectively). Patient age ranged from seven months to 20.4 years. The overall explantation and reimplantation rate was 3.32% (17/512 implants), with seven as a result of device failure (1.37%), nine events of medical failure (1.76%), and one inconclusive failure (0.20%). Cumulative CI survival rates at 5, 10, 15, and 20 years were 98.15%, 96.33%, 95.53%, and 94.39%.
The overall institutional CI failure, explantation, and reimplantation rates are lower than the average reported rates in the literature.
人工耳蜗植入适用于双侧重度至极重度感音神经性听力损失的儿科患者。文献报告表明，人工耳蜗植入（CI）装置的存活率以及取出和再植入的比率存在很大差异。本回顾性图表研究总结了加拿大一家三级儿科医院 32 年来接受人工耳蜗植入的儿科患者的 CI 存活率以及取出和再植入的比率。
对 1988 年 4 月至 2020 年 6 月期间接受 Cochlear Corporation®CI 的所有儿科患者进行了回顾性图表审查。收集了取出/再植入的比率，并根据设备类型和故障原因（医疗、设备和不确定故障）进行分类。还根据植入模型完成了基于设备存活率的分析，使用 Kaplan-Meier 曲线进行分析。
在 32 年期间，四位外科医生共植入了 512 个 CI（分别为 77.1%、18.16%、4.49%和 0.20%）。患者年龄从七个月到 20.4 岁不等。总的取出和再植入率为 3.32%（17/512 个植入物），其中 7 个是由于设备故障（1.37%），9 个是由于医疗失败（1.76%），1 个是由于不确定的失败（0.20%）。5、10、15 和 20 年时的 CI 累积存活率分别为 98.15%、96.33%、95.53%和 94.39%。
总的机构 CI 故障、取出和再植入率低于文献中报告的平均比率。
