Maternal serum-alpha-fetoprotein and low birth-weight

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Biochemistry

Background:

• Elevated maternal serum-alpha-fetoprotein (AFP) has been linked to adverse pregnancy outcomes.
• Early identification of high-risk pregnancies is crucial for improving perinatal outcomes.

Purpose of the Study:

• To investigate the association between high maternal serum-alpha-fetoprotein (AFP) levels and adverse pregnancy outcomes in the absence of neural-tube defects.
• To determine if elevated AFP can predict low birth weight and increased perinatal mortality.

Main Methods:

• Analysis of 94 singleton pregnancies with serum-AFP levels at least three times the normal median, excluding neural-tube defects.
• Comparison of infant birth weight and head circumference with control groups.
• Assessment of stillbirth and neonatal mortality rates.

Main Results:

• Infants born to mothers with high AFP levels weighed an average of 357g less than controls (P < 0.001).
• Mean head circumference was also smaller in infants from high-AFP pregnancies.
• A significantly higher mortality rate (stillbirth and neonatal deaths) was observed in this group.

Conclusions:

• Maternal serum-AFP measurement in early pregnancy can identify pregnancies at risk for delivering low-birth-weight infants.
• Elevated AFP levels are associated with increased perinatal mortality risk, even without neural-tube defects.
• Serum-AFP screening may aid in early detection and management of high-risk pregnancies.