CAJ | 학술논문

目的观察人工耳蜗植入后植入耳残余听力的变化。方法对人工耳蜗植入术前能较好配合行为测听的58例听障儿童，人工耳蜗植入后利用游戏测听或纯音测听评估其术耳残余听力，58例术后随访3个月，43例术后随访1年，17例术后随访2年。结果与术前0．25～4 kHz残余听力相比较，58例术耳术后3个月残余听力较术前明显下降（P＜0．05），43例术后1年残余听力明显下降（P＜0．05），但0．25～0．5 kHz残余听力较术后3个月提高，差异有统计学意义（P＜0．05）；17例术后2年0．25～0．5 kHz残余听力较术后3个月明显提高。结论人工耳蜗植入后可导致0．25～4 kHz各频率残余听力下降，但术后1、2年时0．25、0．5 kHz处的残余听力较术后3个月有所提高，1、2、4 kHz残余听力无明显改变。
목적관찰인공이와식입후식입이잔여은력적변화。방법대인공이와식입술전능교호배합행위측은적58례은장인동，인공이와식입후이용유희측은혹순음측은평고기술이잔여은력，58례술후수방3개월，43례술후수방1년，17례술후수방2년。결과여술전0．25～4 kHz잔여은력상비교，58례술이술후3개월잔여은력교술전명현하강（P＜0．05），43례술후1년잔여은력명현하강（P＜0．05），단0．25～0．5 kHz잔여은력교술후3개월제고，차이유통계학의의（P＜0．05）；17례술후2년0．25～0．5 kHz잔여은력교술후3개월명현제고。결론인공이와식입후가도치0．25～4 kHz각빈솔잔여은력하강，단술후1、2년시0．25、0．5 kHz처적잔여은력교술후3개월유소제고，1、2、4 kHz잔여은력무명현개변。
Objective To investigate the effects of cochlear implantation on residual hearing and to evaluate the potential impact of long -term electrical stimulations on residual hearing .Methods 58 hearing impaired children with cochlear implants were included in this study .All subjects could cooperate with behavioral audiometry .Audio-metric evaluations were carried out pre -implantation and 3 ,12 ,24 months post -implantation respectively .Of 58 subjects ,43 were followed up more than 1 year and 17 were followed up more than 2 years .Results All 58 subjects showed significant differences (P<0 .05) between pre- and 3 months post-implantation of residual hearing at the individual frequencies of 0 .25 ,0 .5 ,1 ,2 and 4 kHz .43 subjects followed up more than 1 year showed statistic differences (P<0 .05) between pre- and 3 months post -implantation ,pre- and 12 months post-implantation at 0 .25 ,0 .5 ,1 ,2 and 4 kHz respectively .Comparing 3 months with 12 months post -implantation ,there were sta-tistic differences at 0 .25 and 0 .5 kHz ,while no significant difference (P>0 .05) at 1 ,2 and 4 kHz .Of 17 subjects followed up more than 2 years ,there were significant differences (P<0 .05) between pre- and various return visits post-implantation .Post-implantation return visits ,there were significant differences between 3 months and 12 , 24 months at 0 .25 and 0 .5 kHz respectively ,not any significant differences on 1 ,2 and 4 kHz .There were no sig-nificant differences on each frequency between 12 months and 24 months post- implantation .Conclusion Residual hearing after cochlear implantation could decrease to some extent for various reasons .There were significant differ-ences between 3 and 12 months post-implantation at 0 .25 and 0 .5 kHz .Not any significant differences were ob-served between 12 months and 24 months post-implantation at each frequency .