Document Detail

Tympanometric and acoustic-reflex studies in neonates.
MedLine Citation:
PMID:  4010256     Owner:  NLM     Status:  MEDLINE    
Tympanograms and acoustic reflexes for a broadband noise and for a 1000-Hz tone were measured in normal neonates. Notched tympanograms were typical of neonatal ears for a 220-Hz probe tone. A single-peaked tympanogram was most characteristic for a probe frequency of 660 Hz. Ipsilateral and contralateral acoustic reflexes were present more frequently for a 660-Hz probe tone compared to a 220-Hz probe tone, but acoustic-reflex thresholds were not significantly different between probe tones. As with adults, acoustic-reflex thresholds for the noise were significantly lower than for the tone, and ipsilateral reflex thresholds were lower than contralateral reflex thresholds. Reliability of acoustic-reflex and tympanometric measures was high. Age change from 2 to 4 days had no significant effect on tympanometric or acoustic-reflex characteristics. There was no apparent relation between tympanometric pattern and acoustic-reflex characteristics.
B H Sprague; T L Wiley; R Goldstein
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of speech and hearing research     Volume:  28     ISSN:  0022-4685     ISO Abbreviation:  J Speech Hear Res     Publication Date:  1985 Jun 
Date Detail:
Created Date:  1985-08-22     Completed Date:  1985-08-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376336     Medline TA:  J Speech Hear Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  265-72     Citation Subset:  IM    
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MeSH Terms
Acoustic Impedance Tests*
Functional Laterality
Infant, Newborn*
Reference Values
Reflex, Acoustic*
Sensory Thresholds

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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