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  • Title: Visual evoked potential characteristics and early diagnosis of Pelizaeus-Merzbacher disease.
    Author: Apkarian P, Koetsveld-Baart JC, Barth PG.
    Journal: Arch Neurol; 1993 Sep; 50(9):981-5. PubMed ID: 8363453.
    Abstract:
    OBJECTIVE: Early diagnosis of Pelizaeus-Merzbacher disease; assessment of disease progression. DESIGN: Pediatric neuro-ophthalmology evaluation of visual function with pattern and luminance visual evoked potentials; behavioral state assessment; electrophysiological diagnostic test; baseline estimates at the age of 11 weeks; 1-year follow-up. SETTING: University hospital electrodiagnostic vision research laboratory. CASE STUDY: X-linked Pelizaeus-Merzbacher disease; leukodystrophy; patient tested at the age of 11 weeks and at the age of 58 weeks for follow-up; five age-matched normal controls. INTERVENTIONS: Physical therapy, medication, evaluation. MAIN OUTCOME: Early diagnosis; diagnostic confirmation; objective monitor of disease progression. RESULTS: Abnormal spatial and temporal vision and abnormal visual pathway maturation; visual evoked potentials of proband with Pelizaeus-Merzbacher disease were grossly abnormal, reflecting myelination disorder. CONCLUSIONS: Visual evoked potential pediatric electrodiagnosis yields reliable measures of visual function and visual system maturation in leukodystrophy.
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