Usporedba praga sluha dobivenog pomoću ASSR (auditory steady state responses) i ranim auditivnim evociranim potencijalima kod djece

Current recommendations proposed by pediatric audiologists are to commence with hearing amplification in children aged 6 months and above, after previous determination of the type and degree of hearing impairment and audiometric configuration. The goal of this study was to compare results obtained by click-evoked auditory brainstem response (c-ABR) and auditory steady state response (ASSR) in a group of children. This study included 68 children with different degrees of hearing impairment evaluated by c-ABR and ASSR. It is well-known that the c-ABR threshold highly correlates with behavioral hearing level at 2 kHz. In our study, the correlation between the c-ABR and ASSR thresholds in the whole sample was 0.58, 0.73, 0.97, 0.96, 0.95, 0.97; in the group of children with c-ABR thresholds up to 40 dBHL, it was 0.42, 0.73, 0.86, 0.74, 0.81, 0.81; and in the group with c-ABR thresholds worse than 40 dBHL, it was 0.46, 0.56, 0.89, 0.83, 0.85, 0.89 at 0.5, 1, 2, 4, 1-4, 2-4 kHz, respectively. Individual differences between the c-ABR and ASSR thresholds in the whole sample were up to 95, 90, 20, 25 dB at 0.5, 1, 2, 4 kHz, respectively. Study results indicated that there was strong correlation between the c-ABR and ASSR thresholds at 2, 4, 1-4, 2-4 kHz. The ASSR can be used as a valuable clinical tool and an excellent complementary method which, along with other audiologic techniques, provides more accurate hearing threshold estimation at an early age in children.Trenutne preporuke pedijatrijskih audiologa su da slušnu amplifikaciju kod djece treba započeti od 6. mjeseca, nakon prethodnog određivanja tipa i stupnja oštećenja sluha i audiometrijske konfiguracije. Cilj ove studije bio je usporediti rezultate dobivene pomoću ranih auditivnih evociranih potencijala (c-ABR) i ASSR (auditory steady state responses) kod djece. Ovo istraživanje je obuhvatilo 68 djece s različitim stupnjem oštećenja sluha procijenjenim pomoću c-ABR i ASSR. Poznato je da je prag sluha određen pomoću c-ABR u visokoj korelaciji s razinom sluha na 2 kHz. U našem istraživanju je korelacija između pragova sluha određenh pomoću c-ABR i ASSR u cijelom uzorku bila 0,58, 0,73, 0,97, 0,96, 0,95, 0,97; u skupini djece s c-ABR pragovima sluha do 40 dBHL bila je 0,42, 0,73, 0,86, 0,74, 0,81, 0,81; a u skupini s c-ABR pragovima sluha nižim od 40 dBHL bila je 0,46, 0,56, 0,89, 0,83, 0,85, 0,89 na 0,5, 1,2, 4, 1-4 odnosno 2-4 kHz. Pojedinačne razlike između pragova sluha određenih pomoću c-ABR i ASSR u cijelom uzorku bile su do 95, 90, 20, 25 dB na 0,5, 1, 2 odnosno 4 kHz. Rezultati studije su pokazali da postoji statistički značajna korelacija između pragova sluha određenih pomoću c-ABR i ASSR na 2, 4, 1-4, 2-4 kHz. ASSR se može koristiti kao značajan klinički alat i odlična komplementarna metoda koja, zajedno s drugim audiološkim tehnikama, omogućava precizniju procjenu praga sluha kod djece

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