Birth-weight ratio and cerebral palsy

Area of Science:

• Obstetrics
• Neonatology
• Pediatric Neurology

Background:

• Congenital cerebral palsy (CP) is a complex neurological disorder with multifactorial causes.
• Fetal growth and its relationship to perinatal factors are crucial in understanding CP etiology.
• The birth-weight ratio (BWR) is a recognized indicator of fetal growth status.

Purpose of the Study:

• To retrospectively analyze the relationship between the birth-weight ratio and congenital cerebral palsy.
• To investigate the association between fetal growth, pregnancy factors, and CP severity.
• To determine if growth retardation is a cause or consequence of perinatal brain injury.

Main Methods:

• Retrospective analysis of 605 congenital cerebral palsy cases.
• Assessment of the birth-weight ratio (BWR) in relation to gestational age and pregnancy history.
• Correlation of BWR with clinical severity and presumed brain damage extent in singletons and twins.

Main Results:

• The birth-weight ratio exhibits a specific pattern across gestation, being high in premature infants, lowest at mid-third trimester, and rising at term.
• Pregnancy abnormalities and maternal pregnancy losses were associated with a depressed BWR.
• No significant correlation was found between a low BWR and the severity of clinical CP or extent of brain damage in singletons or twins.

Conclusions:

• Fetal growth retardation, as indicated by BWR, appears to be an association rather than a causal factor in perinatal vascular-anoxic brain lesions leading to CP.
• The findings challenge the direct causal role of intrauterine growth restriction in the pathogenesis of certain CP types.
• Further research is warranted to elucidate the complex interplay of factors contributing to congenital cerebral palsy.