ABSTRACT
Objective To investigate the character 、difference and clinical meaning of distortion product otoacoustic emissions(DPOAE) and auditory brainstem respons(ABR) in high risk neonates with.Methods DPOAE and ABR were recorded with amplaid MK 22 and GSI60 in 200(400ears) high risk neonates, then compared the results.Results Of 200(400ears) newborns, the presence of DPOAE was 64%(256/400 ears), the presence of ABR was 88.25%(353/400 ears). The co-negativity and co-positivity of DPOAE and ABR were 61.50%(246/400 ears)and 9.25%(37/400 ears). The false negative and false positive of DPOAE were 3.91%(10/256 ears)and 74.31%(107/144 ears).Conclusion The DPOAE test is simple,quick,harmless,sensitive and objective. Because it only reflects the function of the cochlea and has high false positive, we can't make the diagnosis of hearing loss immediately when newborns don't pass the DPOAE test.The ABR test is a reliable method for neonatal hearing screening. The combination of DPOAE and ABR in high risk neonatal hearing screening could increase the accuracy and reliability of the test and retest results.
ABSTRACT
BACKGROUND AND OBJECTIVES: Otoacoustic emissions (OAEs) are the objective and noninvasive methods to assess cochlear function. The purpose of the present study is to determine the short-term and long-term test/retest reliability of the distortion-product otoacoustic emissions (DPOAEs) and transient-evoked otoacoustic emissions (TEOAEs). MATHODS: The short-and long-term reliability of DPOAE and TEOAE were examined in 11 normally hearing adults. DPOAE were collected in two basic forms consisting of audiograms and input/output (I/O) functions and reliabilities for TEOAE level, reproducibility index and peak stimulus level were calculated. RESULTS: The result of this study showed that the reliability of DPOAE and TEOAE was generally excellent. CONCLUSIONS: The DPOAE and TEOAE are highly reliable and useful tests to monitor the cochlear function for the purpose of study or clinical use in combination with other standard tests of audiometric function.
Subject(s)
Adult , Humans , HearingABSTRACT
Distortion product otoacoustic emissions(DPOAEs) have emerged as a promising clinical tool for measuring hearing status. This investigation examined the influence of four variable (test/retest reliability, test environment, gender and number of measurement points of resolution/octave) on the DPOAE response when obtained using a commercially available system, Otodynamics ILO92. Twenty normal hearing adults(10 males and 10 females) served as participants in this study. DPOAE measurements were obtained over three test sessions(baseline, 1 week retest, and a 10 minute retest following the one week measurement). Results showed that: 1) correlations were high across the three test sessions;2) test environment considerably affected the DPOAE measures below 4kHz;3) DPOAE amplitudes were significantly greater in females than males at 3 and 6kHz;and 4) DPOAE amplitudes were not affected significantly by the number of resolution points employed.