macrosomia
Pronunciation: mak-roh-SOH-mee-ah
Fetal overgrowth resulting in birth weight exceeding normal parameters for gestational age.
Full Definition
Macrosomia refers to excessive fetal growth, typically defined as birth weight greater than 4,000 grams (8 pounds 13 ounces) or above the 90th percentile for gestational age. This condition is commonly associated with maternal diabetes, previous history of macrosomic infants, or maternal obesity. Macrosomia increases the risk of shoulder dystocia, cesarean delivery, birth trauma, and neonatal metabolic complications. Antepartum diagnosis relies on ultrasound estimated fetal weight, though accuracy varies. The condition influences delivery planning and may prompt discussions about timing and method of delivery.
Usage
Usage note: Weight thresholds may vary by institution; verify local definitions when editing clinical protocols.
In Context
- "Ultrasound findings suggested fetal macrosomia with estimated weight of 4,200 grams at 38 weeks." — Antepartum ultrasound report
- "The diabetic patient was counseled about increased risk of macrosomia." — High-risk pregnancy consultation