selective fetal growth restriction
Condition in twin pregnancies where one fetus shows significantly impaired growth while the co-twin grows normally.
Full Definition
Selective fetal growth restriction (sFGR) is a complication specific to twin pregnancies where one fetus exhibits significantly reduced growth compared to its co-twin, typically defined as an estimated fetal weight below the 10th percentile with an inter-twin weight discordance of 25% or more. This condition is most common in monochorionic twins due to unequal placental sharing but can also occur in dichorionic pregnancies. sFGR is classified into different types based on umbilical artery Doppler patterns, with management varying from expectant monitoring to selective reduction or early delivery depending on severity and type. The condition poses risks to both the growth-restricted and normally growing twin.
Usage
Usage note: Often abbreviated as sFGR. Distinguish from twin-to-twin transfusion syndrome which has different pathophysiology.
In Context
- "Selective fetal growth restriction was diagnosed with Twin A showing absent end-diastolic flow." — Ultrasound report
- "Management of sFGR type III required weekly surveillance due to intermittent absent diastolic flow." — Surveillance protocol