Introduction: Distortion product otoacoustic emissions (DPOAE) researches on neonates shed a new light into early diagnosis of sensorial hearing losses. Study design: Prospective results clinical not randomized. Aim: The purpose of the present study was to typify DPOAE in 20 normal hearing neonates of both sex, according to occurrence, amplitude and duration of test, through DP-Gram and utilizing ILO 92 OAE System-Otodynamics Analyzer. Results: Seventeen out of twenty neonates who volunteered for the research were evaluated, totaling 33 ears. DPOAE occurred in 57.5% in 1 kHz; 93.9% in 1.5 kHz and 3 kHz; 96.9% in 2 kHz and 100% in 4 kHz and 6 kHz. Conclusion: The DPOAE average amplitude fluctuated from 9.9 to 20.3 dB SPL. The average duration of the test was 82 seconds.
evoked otoacoustic emissions; distortion product; hearing; neonates
