Fetal macrosomia--an obstetrician's nightmare?

Area of Science:

• Obstetrics and Gynecology
• Perinatal Medicine
• Maternal-Fetal Medicine

Background:

• Fetal macrosomia, defined as birth weight at or above the 90th percentile for gestational age, is associated with increased perinatal risks.
• Understanding risk factors and outcomes is crucial for optimizing obstetric care.

Purpose of the Study:

• To investigate maternal and neonatal factors associated with fetal macrosomia.
• To evaluate delivery outcomes in cases of fetal macrosomia compared to controls.

Main Methods:

• Retrospective analysis of 508 term infants with birth weight ≥ 4200g (study group) and 330 infants with birth weight < 4000g (control group).
• Review of maternal and neonatal medical records for clinical data.
• Study conducted at Second Department of Obstetrics and Gynecology, Warsaw Medical University (2004-2007).

Main Results:

• Maternal age, parity, BMI, and pregnancy weight gain were positively correlated with fetal macrosomia.
• Macrosomic deliveries showed higher rates of prolonged labor, cesarean sections, and increased blood loss.
• No significant differences in Apgar scores or neonatal birth trauma were observed between groups.
• Macrosomia was more frequent in male fetuses.

Conclusions:

• Older, obese multiparous women with significant pregnancy weight gain are at higher risk for fetal macrosomia.
• Increased cesarean section rates in macrosomic pregnancies are often due to cephalopelvic disproportion or obstructed labor.
• Effective delivery management can lead to favorable outcomes in fetal macrosomia.