中文摘要：

目的：探讨不同耳聋程度对婴幼儿患者听觉能力发育的影响,为患儿的听力康复提供基本资料。方法：共有32例选配助听器的语前聋婴幼儿参与本次试验。选配年龄为3～34个月,平均16个月。根据耳聋程度将患儿分为3组。A组听力损失为中度（41～60dB HL）,B组听力损失为重度（61～80dB HL）,C组听力损失为极重度（〉81dB HL）。使用婴幼儿有意义听觉整合量表（IT-MAIS）对患儿的听觉能力进行评估。评估分别在选配前及选配后1、3、6、9、12个月时进行。结果：3组患儿的听觉能力得分均随助听器使用时间的延长而显著提高（P〈0.05）。A组患者在选配后3个月与选配前及选配后1个月时听觉能力得分的差异有统计学意义（P〈0.05）。B组患者在选配后6个月与选配前及选配后1、3个月时听觉能力得分比较差异有统计学意义（P〈0.05）。C组患者在选配后9个月与选配前及选配后1、3、6个月时听觉能力得分比较差异有统计学意义（P〈0.05）。A、B两组患儿在选配前和选配后1、3、6、9、12个月时听觉能力得分比较差异均无统计学意义（P〉0.05）。A、C两组患儿在选配后3、6、9、12个月时听觉能力得分比较差异均有统计学意义（P〈0.05）。B、C两组患儿在选配后1、3、6、9、12个月时听觉能力得分比较差异均有统计学意义（P〈0.05）。结论：耳聋婴幼儿在选配助听器后,听觉能力随助听器使用时间的延长而显著提高。耳聋程度对选配助听器婴幼儿听觉能力的发育存在显著影响。

英文摘要：

Objective：The purpose of this study is to investigate the effects of hearing level on auditory performance in infants with hearing aids and provide a clinical database for their hearing and speech habilitation.Method：A total of 32 infants with prelingual hearing loss participated in this study,ranging in age at hearing aid fitting from 3 to 34 months with a mean of 16 months.According to their hearing level,they were divided into three groups.Infants in group A were with moderate hearing loss（41-60 dB HL）.Infants in group B were with severe hearing loss（61-80 dB HL）.Infants in group C were with profound hearing loss（81 dB HL）.The infant-toddler meaningful auditory integration scale（IT-MAIS） was used to evaluate their auditory performance.The evaluation was performed before hearing aid fitting and 1,3,6,9,12 months after fitting.Result：The mean scores of auditory performance showed significant improvements with time of hearing aid use for the three groups of infants（P0.05）.The mean score of auditory performance for group A at 3 months after fitting was significantly superior in comparison with the scores before hearing aid fitting and at 1 month after fitting（P0.05）.The mean score of auditory performance for group B at 6 months after fitting was significantly superior in comparison with the scores before hearing aid fitting and at 1,3 months after fitting（P0.05）.The mean score of auditory performance for group C at 9 months after fitting was significantly superior in comparison with the scores before hearing aid fitting and at 1,3,6 months after fitting（P0.05）.There were no significant differences in mean scores between group A and B at each evaluating interval（P0.05）.However,significant differences were observed between group A and C at 3,6,9,12 months after fitting（P0.05）.Significant differences were also shown between group B and C at 1,3,6,9,12 months after fitting（P0.05）.Conclusion：Auditory performance of infants with prelingual hearing loss developed signif