摘要
目的:研究0~2岁的听力正常婴幼儿骨导听性脑干反应(ABR)的波形特点、波V反应阈值及波V潜伏期-强度函数曲线,为临床上开展婴幼儿骨导ABR提供一定的参考依据。方法:于镇静睡眠状态下对24例0~2岁听力正常婴幼儿(0~1岁12例,1~2岁12例,共36只耳)进行气骨导短声ABR检测。结果:1气骨导ABR在其阈值及阈上强度下的波形相似,在给声强度为35 d Bn HL时均可记录到清晰、稳定、重复性好及分化好的骨导ABR波形,其中Ⅰ、Ⅲ、Ⅴ波引出率分别为29.2%、46.7%和100%。2骨导ABR的波V反应阈为(15.00±5.48)d Bn HL,阈值处Ⅴ波的潜伏期为(8.32±0.54)ms。3不同年龄组间骨导ABR波V反应阈值和潜伏期差异有统计学意义(P〈0.05),即0~1岁组波V阈值较1~2岁组高,阈值处波V潜伏期较1~2岁组延长。不同性别间骨导ABR波V反应阈值和潜伏期差异无统计学意义(P〉0.05)。4骨导ABR的V波潜伏期-强度函数曲线表明骨导ABR的V波潜伏期随着Click给声刺激强度的递减而逐渐延长。结论:骨导ABR在一定刺激强度下可记录到清晰稳定的波形,其波形与相应刺激强度下的气导ABR波形相似。联合应用气骨导ABR的潜伏期-强度函数曲线,可望对婴幼儿听力筛查、听力损失性质的判断提供重要的临床参考价值。
Objective:To study the characteristics of wave forms of the bone-conduction click-evoked auditory brainstem responses in 0~2 years old infants with normal hearing and to evaluate initially the value of its application in clinic.Methods:Air-and bone-conduction click-evoked ABRS in 24 cases of 0-2 years old infants(0-1 years,1-2 years every 12 cases,36 ears) with normal hearing were performed.The data were statistically analyzed with SPSS17.0.Results:The wave forms of bone-conduction ABR were almost the same as those of air-conduction at the thresholds or above.The detection rates of wave I,III and V were 29.2%,46.7% and 100%,respectively at 35 d Bn HL.The thresholds to bone-conducted ABR were(15.00±5.48) d Bn HL,with the latencies of wave V were(8.32±0.54) ms.There were significant differences between ages for the thresholds and the wave V latencies(P〈0.05),for aged 0-1 years infants,the thresholds to bone-conducted ABR were higher than that aged 1-2 years infants,and the wave V latencies were prolonged than aged 1-2 years groups.There were no significant differences between male and female for the thresholds and the wave V latencies.The bone-conducted wave V latency-intensity functions exhibited increased latencies as intensity decreased.Conclusion:The boneconduction ABR is a valuable and effective method in children's hearing test with special values in newborn hearing screening,more information on ascertaining the presence and magnitude of a conductive hearing loss can be obtained when both air and bone-conducted ABR wave V latency-intensity functions are administered.
出处
《温州医学院学报》
CAS
2015年第8期588-592,共5页
Journal of Wenzhou Medical College
基金
温州市科技计划项目(Y20130264)
关键词
婴幼儿
骨导
听性脑干反应
infants
bone conduction
auditory brainsterm response