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Normal işiten erişkinler ve işitme engelli çocuklarda ASSR ile elde edilen tahmini işitme eşiği seviyelerinin ABR ve saf ses odiyometre ile elde edilen eşik seviyeleriyle karşılaştırılması

Comparison of the predicted hearing threshold levels obtained by auditory steady state responses with those obtained by auditory brainstem responses and pure tone audiometry in normal hearing adults and children with hearing impairment

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Abstract (2. Language): 
This study was performed to evaluate the reliability of auditory steady state responses (ASSR) testing. Eighty-nine normal hearing adults and 50 children with extreme hearing impairment were included in the study. Pure tone audiometry thresholds, thresholds of brainstem auditory evoked responses and predicted ASSR thresholds were recorded in normal hearing subjects and subjects with hearing impairment, and the correlation among them was investigated using Spearman’s rho test. Test frequencies were 500, 1000, 2000 and 4000 Hz. There was a weak correlation between pure tone thresholds and thresholds of ASSR in subjects with normal hearing. There was a moderate correlation between pure tone thresholds and thresholds of auditory brainstem responses, and ASSR thresholds in subjects with hearing impairment. Results of this study indicate reliability of ASSR thresholds in predicting pure tone audiometry thresholds and thresholds of auditory brainstem responses is not clinically high enough, although it provides information about the level of hearing.
Abstract (Original Language): 
Bu çalışma, “Auditory steady state responses” (ASSR) testinin güvenirliğinin sınanması amacıyla gerçekleştirilmiştir. Çalışmaya 89 normal işiten denek ve 50 ileri derecede işitme engelli çocuk alınmıştır. Normal işiten deneklerde ve işitme engelli deneklerde saf ses işitme eşikleri, işitsel beyin sapı cevabı eşikleri ve tahmini ASSR eşikleri ölçülmüş ve aralarındaki korelasyon Spearman rho testi ile araştırılmıştır. Test frekansları 500, 1000, 2000 ve 4000 Hz’di. Normal işiten deneklerde saf ses eşikleri ile ASSR arasında zayıf bir korelasyon bulunmuştur. İşitme engellilerde ise saf ses eşikleri ve işitsel beyin sapı cevabı eşikleriyle ASSR eşikleri arasında orta derecede korelasyon saptanmıştır. Elde edilen sonuçlar ASSR’nin işitme seviyesine ilişkin bilgi vermekle birlikte, saf ses işitme eşiklerini ve işitsel beyin sapı cevabı sonuçlarını tahmin etmede güvenirliğinin klinik anlamda yeterli derecede yüksek olmadığını göstermektedir.
190-195

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