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[Analysis of peak 1st latency in brainstem auditory evoked potentials in newborns aged 1 to 14 days]
W Pilecki1, M Sobieszczańska, J Jagielski
1Katedry i Zakładu Patofizjologii AM we Wrocławiu.
Neurologia I Neurochirurgia Polska
|November 1, 1996
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Brainstem Auditory Evoked Response (BAER) tests in newborns show a high rate of delayed peak I latency in the first 4 days of life. This rate significantly decreases in infants aged 5-7 days.
Area of Science:
- Neonatal audiology
- Neurophysiology
- Pediatric neurology
Background:
- Brainstem Auditory Evoked Responses (BAERs) are crucial for assessing auditory pathway function in newborns.
- Maturation of the auditory system can influence BAER results.
- Establishing normative data for BAERs in different neonatal age groups is essential for accurate diagnosis.
Purpose of the Study:
- To investigate the age-related changes in Brainstem Auditory Evoked Response (BAER) parameters in healthy newborns.
- To determine the prevalence of delayed peak I latency in the early neonatal period.
Main Methods:
- BAER examinations were conducted on healthy newborns up to 14 days of age.
- Participants were stratified into age groups: 0-4 days and 5-7 days.
- Peak I latency was analyzed for each participant.
Main Results:
- A high percentage (57.8%) of newborns aged 0-4 days exhibited delayed peak I latency.
- In the 5-7 days age group, the incidence of abnormal results, specifically delayed peak I latency, dropped significantly to 14.1%.
Conclusions:
- Delayed peak I latency in BAERs is common in the first few days of life in healthy newborns.
- Auditory pathway maturation leads to a normalization of BAER results within the first week of life.
Abstract:
BAEPs examinations performed in healthy newborns aged up to 14 days of life revealed that in the youngest group (up to 4 days of life) the percentage of the results with delayed peak I latency was relatively high -57.8%. In the further age group (5-7 days of life) the number of the abnormal results decreased considerably down to 14.1%.