largeforgestation
Large-for-gestational-age (LGA) describes infants whose birth weight is above the 90th percentile for their gestational age, based on population or customized growth charts. Macrosomia is a related term often defined by a birth weight above about 4,000 g (8 lb 13 oz), though this absolute threshold varies by guideline and is distinct from LGA, which is percentile-based.
Risk factors include maternal diabetes (gestational or pregestational), maternal obesity, excessive weight gain during pregnancy, prior
Diagnosis: Prenatally, estimated fetal weight by ultrasound may suggest excess size; postnatally, the newborn's birth weight
Complications: LGA increases the risk of cesarean delivery and shoulder dystocia, birth injuries (for example brachial
Management: Prenatal care focuses on optimizing maternal metabolic control if diabetes, appropriate weight gain, and planning