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Brainstem auditory evoked response in newborns with hyperbilirubinemia
V K Agrawal1, R Shukla, P K Misra
1Department of Pediatrics, King George's Medical College, Lucknow.
Indian Pediatrics
|April 27, 1999
Summary
Neonatal hyperbilirubinemia can cause initial Brainstem Auditory Evoked Response (BAER) abnormalities. Serial BAER monitoring is valuable for detecting neurodevelopmental delays in infants with jaundice.
Area of Science:
- Neonatal Medicine
- Neurophysiology
- Auditory Neuroscience
Background:
- Neonatal hyperbilirubinemia is a common condition.
- Severe hyperbilirubinemia can lead to kernicterus and neurological deficits.
- Early detection of auditory pathway dysfunction is crucial.
Purpose of the Study:
- To assess initial Brainstem Auditory Evoked Response (BAER) abnormalities in neonates with hyperbilirubinemia.
- To evaluate the reversibility of these BAER abnormalities after treatment.
- To correlate BAER findings with bilirubin levels and neurodevelopmental outcomes.
Main Methods:
- Prospective cohort study involving 30 term neonates with hyperbilirubinemia and 25 controls.
- Brainstem Auditory Evoked Response (BAER) recorded before and after therapy, and at 2-4 months.
- Denver Development Screening Test (Denver II) performed at 1 year of age.
Main Results:
- 56.7% of neonates with hyperbilirubinemia showed initial BAER abnormalities.
- Abnormalities included raised wave V threshold, absent waves, and prolonged latencies/intervals.
- 41.17% of initially abnormal BAERs persisted after therapy; 3 infants with persistent abnormalities had abnormal neurodevelopmental screening.
Conclusions:
- Serial BAER is a useful, non-invasive tool for detecting neurodevelopmental delay in neonates with hyperbilirubinemia.
- Persistent BAER abnormalities may indicate a higher risk of long-term neurodevelopmental issues.
- Monitoring BAER can aid in timely intervention for affected infants.