Deguine O, Garcia de Quevedo S, Fraysse B, Cormary X, Uziel A, Demonet J F
Service of Otology and Otoneurology, Centre Hospitalier Universitaire Purpan, Toulouse, France.
Ann Otol Rhinol Laryngol Suppl. 1995 Sep;166:403-6.
Choice of the side for cochlear implantation should take into account peripheral (extracortical) factors and central (cerebral dominance) factors. From 111 patients implanted with a Nucleus device, the authors found that significant peripheral factors were the degree of cochlear ossification, the duration of deafness before cochlear implantation, and the preoperative promontory test dynamic range (degree of response on the promontory test in decibels); cause of deafness and residual hearing were not correlated with speech discrimination. Cerebral dominance was indirectly determined by handedness. Handedness laterality was determined by a questionnaire. There was no significant difference in results between patients implanted on their dominant side and patients implanted on their nondominant side. When ears are different according to their peripheral factors, the authors suggest implanting the better ear, provided there is no significant hearing in that ear. When both ears are identical, the side of implantation should be the side of handedness laterality to facilitate device manipulation (a practical reason).
人工耳蜗植入侧的选择应考虑外周（皮质外）因素和中枢（大脑优势半球）因素。在111例植入Nucleus装置的患者中，作者发现重要的外周因素包括耳蜗骨化程度、人工耳蜗植入前耳聋的持续时间以及术前岬试验动态范围（以分贝为单位的岬试验反应程度）；耳聋原因和残余听力与言语辨别力无关。大脑优势半球通过利手间接确定。利手偏好通过问卷调查确定。优势侧植入患者和非优势侧植入患者的结果没有显著差异。当双耳在外周因素方面存在差异时，作者建议植入较好的一侧耳朵，前提是该侧耳朵没有明显听力。当双耳情况相同时，植入侧应为利手偏好侧，以便于设备操作（一个实际原因）。
