Dorman Michael F, Gifford Rene, Lewis Kristen, McKarns Sharon, Ratigan Jennifer, Spahr Anthony, Shallop Jon K, Driscoll Colin L W, Luetje Charles, Thedinger Bradley S, Beatty Charles W, Syms Mark, Novak Mike, Barrs David, Cowdrey Lisa, Black Jennifer, Loiselle Louise
Department of Speech and Hearing Science, Arizona State University, Coor Hall Rm 2211, Tempe, AZ 85287-0102, USA.
Audiol Neurootol. 2009;14(3):181-9. doi: 10.1159/000171480. Epub 2008 Nov 13.
We compared the effectiveness of 2 surgical interventions for improving word recognition ability in a quiet environment among patients who presented with: (1) bilateral, precipitously sloping, high-frequency hearing loss; (2) relatively good auditory thresholds at and below 500 Hz, and (3) poor speech recognition. In 1 intervention (n = 25), a conventional electrode array was inserted into 1 cochlea. As a consequence, hearing was lost in the implanted ear. In the other intervention (n = 22), a Nucleus Hybrid short-electrode array was inserted 10 mm into 1 cochlea with the aim of preserving hearing in that ear. Both groups of patients had similar low-frequency hearing and speech understanding in the ear contralateral to the implant. Following surgery, both groups had significantly higher word recognition scores than before surgery. Between-group comparisons indicated that the conventional electrode array group had higher word recognition scores than the 10-mm group when stimulation was presented to the operated ear and when stimulation was presented to both ears.
（1）双侧、陡坡型高频听力损失；（2）500Hz及以下频率相对较好的听阈；（3）言语识别能力较差。在一种干预措施中（n = 25），将传统电极阵列插入一侧耳蜗。结果，植入耳听力丧失。在另一种干预措施中（n = 22），将Nucleus Hybrid短电极阵列插入一侧耳蜗10毫米，目的是保留该耳听力。两组患者植入对侧耳的低频听力和言语理解能力相似。手术后，两组患者的单词识别得分均显著高于手术前。组间比较表明，当刺激手术耳以及刺激双耳时，传统电极阵列组的单词识别得分高于10毫米组。
