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Growth parameters in newborns with hyperphenylalaninaemia.
Marco Zaffanello1, Giorgio Zamboni, Luciano Tatò
1Regional Centre for Neonatal Congenital Errors of Metabolism, University of Verona, Piazzale L. Scuro, 37134 Verona, Italy. marco.zaffanello@univr.it
Paediatric and Perinatal Epidemiology
|July 19, 2002
Summary
Phenylketonuria (PKU) and hyperphenylalaninaemia (HPA) significantly impact fetal growth, leading to reduced body length and cranial circumference in newborns. These growth parameters are crucial indicators for affected neonates.
Area of Science:
- Medical Science
- Neonatal Studies
- Genetics
Background:
- Hyperphenylalaninaemia (HPA) encompasses conditions like phenylketonuria (PKU), characterized by elevated phenylalanine levels.
- Maternal HPA can affect fetal development, necessitating an understanding of its impact on intrauterine growth.
Purpose of the Study:
- To investigate the effects of PKU and HPA on fetal growth parameters in newborns.
- To compare growth metrics between affected neonates and healthy controls.
Main Methods:
- Studied growth parameters (weight, length, head circumference) in 23 PKU, 60 HPA, and 1853 control newborns.
- Utilized statistical analysis, including Mann-Whitney and Kruskal-Wallis tests, to compare z-scores.
Main Results:
- PKU and HPA newborns showed a higher incidence of reduced body length and cranial circumference compared to controls.
- PKU newborns exhibited significantly lower z-scores for all growth parameters than controls.
- HPA newborns had significantly lower body length z-scores than controls.
Conclusions:
- Both PKU and HPA are associated with intrauterine growth retardation.
- Body length and cranial circumference are more sensitive indicators of growth impairment in PKU and HPA than birth weight.