Department of Otolaryngology-Head and Neck Surgery, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
Otol Neurotol. 2014 Jan;35(1):e40-4. doi: 10.1097/MAO.0b013e318291c66d.
Hearing preservation (HP) in the context of cochlear implantation (CI) is indicative of an atraumatic insertion, which could potentially offer a clinical advantage to performance, whether such preservation was intended for the application of electoacoustic stimulation (EAS). Our goal was to determine the degree of HP after the implantation of a full-length electrode array (MedEl FLEXsoft).
Prospective, within-subject repeated measure design.
Adult patients with residual low-frequency hearing who received a 31.5-mm FlexSoft electrode array were included. Implantation using soft surgery techniques occurred at a single tertiary referral center between 2008 and 2011. Preoperative and postoperative audiometric data were compared.
In 36 consecutive patients at 1 year postimplantation, 6 (21%) maintained complete HP (an increase of low-frequency pure-tone average (PTA) ≤10 dB from the preoperative value), and 19 (65%) maintained partial HP (an increase in low-frequency PTA ≤40 dB from the preoperative values) throughout the follow-up period (average, 368 d). Higher preoperative hearing threshold levels (HTLs) at 1,000 Hz were associated with HP.
Low-frequency HP is possible in patients implanted with the full-length FlexSoft electrode. Longer follow-up is required to determine if results are maintained over time and if such preservation is in fact advantageous to clinical outcomes.
耳蜗植入（CI）中听力保护（HP）表明插入过程无创伤，这可能为性能提供临床优势，无论这种保护是否旨在应用电声刺激（EAS）。我们的目标是确定全长电极阵列（MedEl FLEXsoft）植入后 HP 的程度。
前瞻性、受试者内重复测量设计。
纳入接受 31.5mm FlexSoft 电极阵列的残留低频听力的成年患者。植入手术采用软外科技术，于 2008 年至 2011 年在一家三级转诊中心进行。比较术前和术后的听力数据。
在 36 例连续患者中，植入后 1 年有 6 例（21%）保持完全 HP（低频纯音平均听阈（PTA）增加≤10dB 与术前值相比），19 例（65%）在整个随访期间保持部分 HP（低频 PTA 增加≤40dB 与术前值相比）（平均 368d）。1000Hz 术前听力阈值水平（HTL）较高与 HP 相关。
在植入全长 FlexSoft 电极的患者中可以实现低频 HP。需要更长的随访时间来确定结果是否随着时间的推移而保持，以及这种保护是否实际上对临床结果有利。
4 级。
