不同年龄人工耳蜗置入患者术后心理物理测试比较

The psychophysical tests in different age of patients with cochlear implants

目的 :对不同年龄使用人工耳蜗患者的心理物理测试进行分析和比较。方法 :共有 170例使用澳大利亚 2 4M型人工耳蜗系统的患者参加本次试验。将患者按年龄分为A(<3岁 )、B(3～ <6岁 )、C(6～ 12岁 )、D(>12岁 ) 4组。心理物理测试主要包括阈值和舒适阈的测试。结果 :开机后 1个月 ,A组与D组患者各电极 (除2 0号电极 )的舒适阈的差异均有统计学意义 (P <0 .0 1,其中 2、18、19、2 1、2 2号电极P <0 .0 5 )。开机时 ,D组患者实际使用舒适阈与舒适阈差值的标准化值的均值与A、B、C组患者的均值之间的差异均有统计学意义 (P <0 .0 1,其中与C组的差异P <0 .0 5 )。开机 1周时 ,D组患者实际使用舒适阈与舒适阈差值的标准化值的均值与A组的均值之间的差异有统计学意义 (P <0 .0 5 )。结论 :不同年龄患者的心理物理测试存在差异。患者使用人工耳蜗系统的早期 ,不同年龄患者实际使用舒适阈与舒适阈差值的标化值的差异有统计学意义。

Objective: The aim of this research is to analyse and compare the psychophysical tests in different age of patients with a cochlear implant. Method:One hundred and seventy patients with Nucleus CI24M cochlear implant system participated in this study. The patients were divided into four groups according to their age. They were group A (<3 year), B(3-<6 year), C(6-12 year) and D(>12 year). The psychophysical tests included T and C-Level evaluation. Result:C-Levels of each electrode (except electrode No.20) were significantly different between group A and D at the time of one month after switch-on (P< 0.01 , P< 0.05 for the No. 2, 18, 19, 21, 22 electrode). The normalized differences between used C-Levels and C-Levels for group D were significantly higher than the other three groups at the switch-on session (P< 0.01 ,P< 0.05 between group D and C). The normalized differences between used C-Levels and C-Levels were significantly different for the group A and D at one week after first programming session (P< 0.05 ). Conclusion:T and C-Level for different age groups were different. The normalized differences between used C-Levels and C-Levels were significantly different among the four groups in the few weeks after switch-on.