chirp声诱发的听性稳态反应在新生儿和低月龄婴儿客观听力评估中的应用

The Application of the Chirp Stimulus Evoked Auditory Steady State Response (ASSR) and Auditory Brainstem Response to the Infants of 6 Months Younger

目的探讨以线性调频脉冲音(chirp)为刺激声的听性稳态反应(auditory steady state response,AS-SR)(简称chirp-ASSR)的反应阈评估低月龄婴儿客观听力的可行性。方法对68例136耳6月龄及以下的双耳AABR筛查均通过的婴儿分别进行chirp-ASSR和短纯音诱发的听性脑干反应(tone burst evoked auditory brain-stem response,tbABR)检测,对反应阈和检测时间进行比较。结果①tbABR与chirp-ASSR在各个频率的反应阈相关性良好;②chirp-ASSR双耳检测时间(平均7分4秒)明显短于tbABR(平均21分6秒),可节省约66.51%的时间。结论 chirp-ASSR能快速评估低月龄婴幼儿的客观听力,结果可靠、稳定。

Objective To explore the feasibility and advantages of using chirp stimulus evoked auditory steady state response （chirp ASSR） to obtain hearing thresholds from infants below 6 months. Methods Compared were the results of chirp-ASSR with tone burst evoked frequency specific auditory brainstem response （tbABR） in 68 normal infants below 6 months （136 ears）. Results @The correlation coefficients of elicited response thresholds between chirp--ASSR and tbABR were well;（Z）chirp-ASSR could provide shorter detection time than tbABR. Conclusion As an objective hearing threshold detection tool, the results of chirp-ASSR are reliable and acceptable, chirp-ASSR facilitates valid estimates of normal newborn hearing thresholds in less time.