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[Embryofetopathy caused by postnatally detected maternal phenylketonuria]
H Bode1, R Urbanek, D Henglein
1Universitätskinderklinik, Freiburg i. Br., BRD.
Helvetica Paediatrica Acta
|June 1, 1987
Summary
Undiagnosed maternal phenylketonuria can cause severe infant health issues, including microcephaly and developmental delays. Early diagnosis and intervention are crucial for affected newborns, even with normal phenylalanine levels.
Area of Science:
- Medical Genetics
- Metabolic Disorders
- Neonatal Health
Background:
- Classical phenylketonuria (PKU) in mothers, if untreated, poses significant risks to fetal development.
- Maternal PKU can lead to congenital anomalies and developmental deficits in offspring.
- Neonatal screening programs aim to detect inherited metabolic disorders early.
Observation:
- A case report details a 10-month-old female infant with microcephaly, growth retardation, dystrophia, facial dysplasia, and cardiac defects.
- The infant's mother, diagnosed with classical PKU post-delivery, had extremely high serum phenylalanine levels and untreated the condition.
- The infant presented with mild psychomotor retardation despite having normal serum phenylalanine levels.
Findings:
- The infant's congenital anomalies and developmental delays are attributed to the mother's untreated phenylketonuria during pregnancy.
- Maternal phenylketonuria is a critical differential diagnosis for newborns exhibiting dystrophic microcephaly.
- Even in populations with neonatal screening, undiagnosed maternal PKU remains a concern.
Implications:
- Highlights the importance of considering maternal metabolic disorders in the differential diagnosis of congenital anomalies.
- Suggests the need for comprehensive maternal health assessments, particularly for those with potential risk factors for inherited diseases.
- Underscores the potential for severe fetal outcomes from untreated maternal phenylketonuria, necessitating awareness beyond neonatal screening.