Study of characteristic of the cochlear hydrops analysis masking procedure in normal adults / 中华耳鼻咽喉头颈外科杂志
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
;
(12): 480-484, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-250252
ABSTRACT
<p><b>OBJECTIVE</b>To study the characteristic of the cochlear hydrops analysis masking procedure (CHAMP) in normal adults, and to evaluate the diagnostic values of its parameters for membranous labyrinth hydrops.</p><p><b>METHODS</b>Twenty otologically normal adults were recruited (malefemale = 1010), and their auditory brainstem responses (ABR) were obtained to six stimulus conditions using Bio-logic auditory evoked potential system clicks presented alone (unmasked condition) and clicks presented with ipsilateral pink noise high-pass filtered at 8, 4, 2, 1, and 0.5 kHz respectively.</p><p><b>RESULTS</b>The wave V latency of ABR to the high-pass masking pink noise clicks were longer than ABR to clicks alone. The latency delays of wave V for clicks presented with ipsilateral pink noise high-pass filtered at 8, 4, 2, 1, and 0.5 kHz compared to clicks alone were (0.30 ± 0.18), (0.97 ± 0.43), (1.65 ± 0.64), (3.21 ± 0.56), (4.66 ± 0.37) ms respectively. The complex amplitude ratio between ABR to click + 0.5 kHz high-pass noise and click alone was 0.95 ± 0.11.</p><p><b>CONCLUSIONS</b>CHAMP is a promising diagnostic method for membranous labyrinth hydrops, and the latency delay of wave V might be used as the normal criterion. The specificity of the complex amplitude ratio need further evaluation in clinical work.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Perceptual Masking
/
Evoked Potentials, Auditory, Brain Stem
/
Endolymphatic Hydrops
/
Diagnosis
/
Noise
Type of study:
Diagnostic study
Limits:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
Chinese Journal of Otorhinolaryngology Head and Neck Surgery
Year:
2011
Type:
Article
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