growth velocity
The rate of fetal growth over time, assessed through serial biometric measurements to identify growth disorders.
Full Definition
Growth velocity refers to the rate at which a fetus is growing over a specific time period, typically assessed through serial ultrasound biometric measurements taken at least 2-3 weeks apart. This parameter is more informative than single-point measurements as it can distinguish between constitutionally small fetuses and those with pathological growth restriction. Growth velocity is calculated by measuring the change in estimated fetal weight, abdominal circumference, or other biometric parameters over time and comparing to established normative curves. Decreased growth velocity may indicate placental insufficiency, maternal factors, or fetal abnormalities requiring intervention, while normal velocity in a small fetus may suggest constitutional smallness.
Usage
Usage note: Two words, not hyphenated; emphasize the temporal aspect in usage.
In Context
- "Serial scans showed declining growth velocity despite initially normal estimated fetal weight." — Maternal-fetal medicine assessment
- "Normal growth velocity over four weeks reassured that the fetus was constitutionally small." — Growth monitoring report