IUGR
Pronunciation: eye-you-gee-ar
Also written as: IUGR — Intrauterine Growth Restriction
Intrauterine growth restriction, condition where fetal growth falls below expected parameters for gestational age.
Full Definition
Intrauterine growth restriction (IUGR), also known as fetal growth restriction (FGR), refers to a condition in which fetal growth is significantly below the expected rate for gestational age. IUGR is typically defined as estimated fetal weight below the 10th percentile for gestational age, though some definitions use the 5th or 3rd percentiles. The condition may result from maternal factors (hypertension, malnutrition), placental insufficiency, fetal abnormalities, or environmental factors. IUGR increases risks of perinatal morbidity and mortality, including stillbirth, neonatal complications, and long-term developmental issues. Diagnosis relies on serial ultrasound assessments, Doppler studies, and biophysical monitoring.
Usage
Usage note: Increasingly replaced by FGR (fetal growth restriction) in modern usage.
In Context
- "Severe IUGR was diagnosed at 28 weeks with estimated fetal weight below the 3rd percentile." — Clinical diagnosis
- "Doppler studies confirmed placental insufficiency as the likely cause of IUGR." — Ultrasound report