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Semi-Automated Analysis of Peak Amplitude and Latency for Auditory Brainstem Response Waveforms Using R
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Impaired function of the auditory brainstem in term neonates with hyperbilirubinemia
Ze D Jiang1, Andrew R Wilkinson2
1Children's Hospital, Shanghai Medical University, Shanghai, China; Neonatal Unit, Department of Paediatrics, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DU, United Kingdom.
Brain & Development
|April 17, 2013
Summary
Maximum length sequence brainstem auditory evoked response (MLS BAER) reveals auditory brainstem impairment in neonates with hyperbilirubinemia. This technique, especially at high click rates, enhances detection of bilirubin neurotoxicity.
Area of Science:
- Neonatal Auditory Neuroscience
- Neurotoxicology
- Clinical Electrophysiology
Background:
- Neonatal hyperbilirubinemia poses a risk of bilirubin-induced neurotoxicity, potentially affecting the auditory pathway.
- Understanding the precise impact on the auditory brainstem is crucial for timely intervention.
Purpose of the Study:
- To investigate the effects of hyperbilirubinemia on the neonatal auditory brainstem using MLS BAER.
- To evaluate the efficacy of MLS BAER in detecting auditory brainstem impairment caused by bilirubin neurotoxicity.
Main Methods:
- MLS BAER was performed on 57 term neonates with total serum bilirubin >15mg/dL.
- Auditory brainstem responses were analyzed, correlating wave latencies and interpeak intervals with bilirubin levels and click rates.
- Results were compared to age-matched controls.
Main Results:
- Increased wave V latency and interpeak intervals (I-V, I-III, III-V) were observed in neonates with hyperbilirubinemia, particularly at higher click rates.
- These abnormalities correlated with total serum bilirubin levels.
- MLS BAER showed more significant abnormalities than conventional BAER, especially in rostral auditory brainstem regions.
Conclusions:
- Neonatal hyperbilirubinemia impairs auditory brainstem function.
- MLS BAER, particularly at high click rates, is a sensitive method for detecting bilirubin neurotoxicity in the neonatal auditory system.
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