CAJ | 학술논문

目的：研究术前佩戴助听器对人工耳蜗植入术后神经反应遥测值（NRT ）以及 T 值（the subjective threshold ，T －level）、C值（maximal comfort level ，C－level）的影响。方法45例单耳人工耳蜗植入患者按术前是否佩戴助听器及开始佩戴助听器的年龄分为3组，HA1组（n＝17）为术前佩戴助听器大于6个月且佩戴年龄小于3．5岁，HA2组（n＝8）为术前佩戴助听器大于6个月且佩戴年龄大于3．5岁，NHA组（n＝20）为未佩戴助听器组，比较各组术后电极阻抗值和3、6、12个月的NRT值及T 值、C值的差异。结果 NHA、HA1和 HA2三组术后电极阻抗值均值分别为10．9±2．1、10．5±2．3、10．7±2．7 kΩ，三组间差异无统计学意义。除了术后12个月时的C值外，HA1组术后3、6、12个月时的NRT阈值及T值、C值均较NHA组低（P＜0．05或0．01），术后3、6、12个月时，HA1组三项均值均较 HA2组低（P＜0．05），而HA2组与NHA组三项均值差异均无统计学意义（P＞0．05）。结论术前早期（小于3．5岁）佩戴助听器患儿人工耳蜗植入术后NRT、T值及C值均较术前未佩戴助听器组低。
목적：연구술전패대조은기대인공이와식입술후신경반응요측치（NRT ）이급 T 치（the subjective threshold ，T －level）、C치（maximal comfort level ，C－level）적영향。방법45례단이인공이와식입환자안술전시부패대조은기급개시패대조은기적년령분위3조，HA1조（n＝17）위술전패대조은기대우6개월차패대년령소우3．5세，HA2조（n＝8）위술전패대조은기대우6개월차패대년령대우3．5세，NHA조（n＝20）위미패대조은기조，비교각조술후전겁조항치화3、6、12개월적NRT치급T 치、C치적차이。결과 NHA、HA1화 HA2삼조술후전겁조항치균치분별위10．9±2．1、10．5±2．3、10．7±2．7 kΩ，삼조간차이무통계학의의。제료술후12개월시적C치외，HA1조술후3、6、12개월시적NRT역치급T치、C치균교NHA조저（P＜0．05혹0．01），술후3、6、12개월시，HA1조삼항균치균교 HA2조저（P＜0．05），이HA2조여NHA조삼항균치차이균무통계학의의（P＞0．05）。결론술전조기（소우3．5세）패대조은기환인인공이와식입술후NRT、T치급C치균교술전미패대조은기조저。
Objective The aim of this study is to explore the significance of fitting hearing aids before cochle_ar implantation by studying the postoperative impact on neural response telemetry (NRT ) threshold ,the subjective threshold(T -level) and maximal comfort level(C-level) values .Methods A total of 45 patients with cochlear im_plants were divided into 3 groups:patients in group HA1(n=17)had worn hearing aids preoperatively more than 6 months and the age of starting wearing hearing aids was yonger than 3 .5 years old ,patients in group HA2(n=8) had worn hearing aids preoperatively more than 6 months and the starting age was older than 3 .5 years old ,patients in group NHA(n=20 )never wore hearing aids before ACI .The postoperative electrode impedance ,NRT value and T -level and C -level were evaluated at 3rd ,6th ,and 12th months ,respectively .ResuIts Electrode impedances were 10 .9 ± 2 .1 kΩ in NHA group ,10 .5 ± 2 .3 kΩ in HA1 group ,10 .7 ± 2 .7 kΩ in HA2 group ,respectively ,and there were no statistically significant differences .Significant differences were found between group HA1 and group NHA ,group HA1 and group HA2 in terms of NRT threshold value ,T -level or C-level(P<0 .05) .There were no statistically significant differences between group HA2 and group NHA with respect to NRT threshold values ,T-level as well as C-level(P>0 .05) .ConcIusion The results of this study showed that wearing hearing aids for a longer time before CI was beneficial for hearing rehabilitation postoperatively .