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頁籤選單縮合
題 名 | 正常幼兒的骨導性腦幹聽性反應=Bone-Conducted Auditory Brainstem Response in Normal Young Children |
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作 者 | 許權振; 趙俊凱; 林凱南; 洪美枝; 謝泰鑫; 王美華; 黎慧妤; | 書刊名 | 臺灣醫學 |
卷 期 | 1:3 1997.05[民86.05] |
頁 次 | 頁269-273 |
分類號 | 417.6813 |
關鍵詞 | 聽力檢查; 骨導性腦幹聽性反應; 嬰幼兒; Hearing testing; Bone-conducted auditory brainstem response; Young children; |
語 文 | 中文(Chinese) |
中文摘要 | 以臨床應用為導向,報告骨導腦幹聽性反應檢查的刺激音校準和幼兒正常值設定 的一例。 測量對象為 15 名 2 歲聽力正常幼兒,兩耳對滴答聲的氣導腦幹聽性反應閾值均 優於 15 dB nHL (decibel normalized hearing level), 且行為觀察的聲場聽力檢查 500 、1000、2000 和 4000 赫的聽閾均優於 20 分貝,骨髓腦幹聽性反應檢查測試結果, 刺激 音強 45、 30 和 15 dB nHL 的第 V 波平均潛時 (msec) 分別是 6.63 ± 0.31、 7.00 ± 0.36 和 7.63 ± 0.36, 第 V 波平均波幅 (μ V) 分別是 0.34 ± 0.09、 0.26 ± 0.07 和 0.17 ± 0.06。 骨導性腦幹聽性反應的再現性良好,可應用於評估耳蝸的功能,幫助鑑 別診斷傳音性聽力損失或感音神經性聽力損失。本報告的方法可推廣應用於新生兒或 1 歲 以下嬰兒的骨導性腦幹聽性反應正常值的建立。 |
英文摘要 | The auditory brainstem response (ABR) to bone-conducted clicks appears to be capable of providing information about the cochlear function. By using bone-conducted ABR, we can differentiate sensorineural hearing loss from conductive hearing loss in infants and young children. The purpose of this study is to establish clinical normal data for bone-conducted ABR in young Taiwanese children. We used a Nicolet Spirit (Wisconsin, USA) for ABR testing and recording. A bone vibrator (Radioear, Model B-70B, USA) was used to conduct clinck. The intensities of the bond-conducted clicks were calibrated relative to the average behavioral threshold of 10 adults with normal hearing who had been assessed by air-conducted pure tone audiometry to have hearing thresholds no worse than 10dB HL at octave steps from 250 to 8000 Hz. the reference level (0 dB nHL) for the bone vibrator was 55.0 dB p(re: 1 dyne). The ABR to bone-conducted clicks were studied in 15 young children with normal hearing,aged from 1 year 11 months to 2 years 11 months. Af first, they were assessed by air-conducted ABR and sound field audiometry to have hearing thresholds no worse than 15 dB nHL and 20 dB HL, respectively. During bone-conducted ABR testing, the bone vibrator was placed in a supero-posterior auricular position and fixed with an elastic band. The control and maintenance of the delivery of bone-conducted clicks are very important for evaluation of the absolute latencies and amplitudes of the ABR waves. The head coupling force to the bone vibrator should be controlled at 550-650 g. Various intensities (45 dB, 30 dB and 15 dB nHL) of bone-conducted clicks were used to evoke the ABR. Bone-conducted ABR to various intensities were recorded and stored for analysis. The mean latencies (msec) of the wave V evoked by varios stimulus intensities werre as follows: 6.63 ± 0.31 for 45 dB nHL, 7.00 ± 0.36 for 30 dB nHL, and 7.63 ± 0.36 for 15 dB nHL. The mean amplitudes (μ V) of the wave V evoked by various stimulus intensities were as follows: 0.34 ± 0.09 for 45 dB nHL, 0.26 ± 0.07 for 30 dB nHL, and 0.17 ± 0.06 for 15 dB nHL. In the near future, iin order to diagnose sensorineural hearing loss earlier, the present method could be used to establish normal data for bone-conducted ABR for newborns and infants. |
本系統中英文摘要資訊取自各篇刊載內容。