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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
3
|
| pubmed:dateCreated |
1994-10-4
|
| pubmed:abstractText |
Auditory brainstem response (ABR) thresholds to air- and bone-conducted clicks were investigated in 40 full-term neonates. Subjects were divided into two groups of 20 according to postpartum age: less than 48 hours and between 49 and 96 hours. Mean ABR thresholds to air- and bone-conducted clicks for neonates less than 48 hours postpartum were 14.5 dB nHL (51.5 dB peak SPL) and 1.8 dB nHL (36.8 peak re: 1 microN), respectively, while those for neonates between 49 and 96 hours were 3.8 dB nHL (40.8 dB peak SPL) and 1.5 dB nHL (36.5 dB peak re: 1 microN), respectively. A significant difference was found between the two group mean ABR thresholds to air-conducted stimuli (p < .0001) but not for the bone-conducted stimuli (p < .8959). A statistically significant within-group difference was found between the ABR thresholds to air- and bone-conducted stimuli for only the neonates less than 48 hours of age (p < .0001). When the data was collapsed across groups, simple linear regression analyses revealed a statistically significant relation between postpartum age and ABR threshold to air-conducted stimuli (p < .0001) and a nonsignificant relation between postpartum age and ABR threshold to bone-conducted stimuli (p < .9744). These findings support the notion that some resolution of fluids and residuals in the middle ear occurs during the first 48 hours postpartum and that air-conducted stimuli are attenuated during that period. As such, a physiologic conductive deficit among the younger neonates is suggested.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
May
|
| pubmed:issn |
1050-0545
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
5
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
163-72
|
| pubmed:dateRevised |
2006-11-15
|
| pubmed:meshHeading |
pubmed-meshheading:8075412-Acoustic Stimulation,
pubmed-meshheading:8075412-Air,
pubmed-meshheading:8075412-Bone Conduction,
pubmed-meshheading:8075412-Evoked Potentials, Auditory, Brain Stem,
pubmed-meshheading:8075412-Humans,
pubmed-meshheading:8075412-Infant, Newborn,
pubmed-meshheading:8075412-Time Factors
|
| pubmed:year |
1994
|
| pubmed:articleTitle |
Neonatal auditory brainstem response thresholds to air- and bone-conducted clicks: 0 to 96 hours postpartum.
|
| pubmed:affiliation |
Department of Psychology, Dalhousie University, Halifax, Nova Scotia, Canada.
|
| pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|