Comparison of tone burst evoked auditory brainstem responses with different filter settings for referral infants after hearing screening / 中华耳鼻咽喉头颈外科杂志
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
; (12): 201-204, 2011.
Article
in Zh
| WPRIM
| ID: wpr-277487
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>Auditory brainstem responses (ABR) evoked by tone burst is an important method of hearing assessment in referral infants after hearing screening. The present study was to compare the thresholds of tone burst ABR with filter settings of 30 - 1500 Hz and 30 - 3000 Hz at each frequency, figure out the characteristics of ABR thresholds with the two filter settings and the effect of the waveform judgement, so as to select a more optimal frequency specific ABR test parameter.</p><p><b>METHODS</b>Thresholds with filter settings of 30 - 1500 Hz and 30 - 3000 Hz in children aged 2 - 33 months were recorded by click, tone burst ABR. A total of 18 patients (8 male/10 female), 22 ears were included.</p><p><b>RESULTS</b>The thresholds of tone burst ABR with filter settings of 30 - 3000 Hz were higher than that with filter settings of 30 - 1500 Hz. Significant difference was detected for that at 0.5 kHz and 2.0 kHz (t values were 2.238 and 2.217, P < 0.05), no significant difference between the two filter settings was detected at the rest frequencies tone evoked ABR thresholds. The waveform of ABR with filter settings of 30 - 1500 Hz was smoother than that with filter settings of 30 - 3000 Hz at the same stimulus intensity. Response curve of the latter appeared jagged small interfering wave.</p><p><b>CONCLUSIONS</b>The filter setting of 30 - 1500 Hz may be a more optimal parameter of frequency specific ABR to improve the accuracy of frequency specificity ABR for infants' hearing assessment.</p>
Full text:
1
Index:
WPRIM
Main subject:
Audiometry, Evoked Response
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Audiometry, Pure-Tone
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Auditory Threshold
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Acoustic Stimulation
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Evoked Potentials, Auditory, Brain Stem
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Methods
Type of study:
Diagnostic_studies
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Screening_studies
Limits:
Child, preschool
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Female
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Humans
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Infant
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Male
Language:
Zh
Journal:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
Year:
2011
Type:
Article