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[Neonatal brain injury and evoked potentials]
1Department of Developmental Disorders, National Institute of Mental Health, Chiba.
No to Hattatsu = Brain and Development
|March 1, 1996
Summary
Abnormal auditory brainstem response (ABR) at NICU discharge can predict prognosis in neonatal asphyxia. However, progressive hearing loss can occur post-discharge, especially with cardiorespiratory issues.
Area of Science:
- Neurology
- Audiology
- Neonatology
Context:
- Neonatal asphyxia poses risks to long-term neurological and audiological outcomes.
- Auditory brainstem response (ABR) is a common neurophysiological test used in neonatal intensive care units (NICUs).
- While ABR can predict prognosis, its utility in cases of isolated neonatal asphyxia is limited.
Purpose:
- To investigate the long-term audiological and neurological outcomes in patients with neonatal asphyxia.
- To explore the predictive value of auditory brainstem response (ABR) abnormalities and their progression post-NICU discharge.
- To understand the relationship between cardiorespiratory symptoms, persistent neonatal pulmonary hypertension, and neurophysiological findings.
Summary:
- Marked ABR abnormalities at NICU discharge predict prognosis in neonatal asphyxia.
- However, 13 patients developed progressive hearing impairment post-discharge, often with severe cardiorespiratory symptoms and persistent neonatal pulmonary hypertension.
- Multimodal evoked potential studies, including ABR, can predict functional status and life expectancy in severe cases.
Impact:
- Highlights the potential for delayed hearing impairment in neonatal asphyxia survivors.
- Suggests the need for long-term audiological monitoring in high-risk neonates.
- Emphasizes the value of multimodal evoked potentials in assessing neurophysiological status and prognosis.