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Published on: June 29, 2013
Severe early-onset fetal growth restriction: What do we tell the prospective parents?
Julia Unterscheider1,2, Rocco Cuzzilla2,3
1Department of Maternal Fetal Medicine, The Royal Women's Hospital, Melbourne, Victoria, Australia.
Insights
Fetal growth restriction (FGR) is a serious pregnancy complication. Early detection and expert management in specialized centers are crucial for improving outcomes for affected infants.
Area of Science:
- Obstetrics and Gynecology
- Maternal-Fetal Medicine
- Neonatology
Background:
- Fetal growth restriction (FGR) is a common pregnancy complication with significant risks for perinatal mortality and infant development.
- True FGR stems from complex maternal, placental, fetal, and environmental interactions, leading to pathological growth restriction.
- Early-onset FGR (<32 weeks) is often detected during mid-trimester scans or associated with placental syndromes like pre-eclampsia.
Purpose of the Study:
- To outline the diagnostic and management principles for fetal growth restriction (FGR).
- To emphasize the importance of timely interventions and specialized care for optimizing outcomes in FGR pregnancies.
- To highlight factors influencing the prognosis of infants affected by FGR.
Main Methods:
- Prenatal diagnosis through sonographic assessment of fetal growth and morphology.
- Serial surveillance of fetal well-being and maternal condition.
- Multidisciplinary team approach in tertiary centers for high-risk pregnancy management.
Main Results:
- Delivery timing is critical, balancing stillbirth risk against prematurity complications, especially in severe early-onset FGR.
- Prognosis is determined by FGR severity, etiology, gestational age at birth, and birthweight.
- Specialized antenatal care and delivery at tertiary centers improve outcomes.
Conclusions:
- Management of FGR requires a comprehensive, multidisciplinary approach.
- Optimizing outcomes necessitates expert care in high-risk pregnancy settings.
- Early detection and appropriate management are key to mitigating FGR's adverse effects.
Abstract:
Fetal growth restriction (FGR) is a common complication of pregnancy, associated with higher risk of perinatal mortality and adverse health and developmental outcomes for surviving infants. True FGR relates to a pathological restriction of fetal growth resulting from complex interactions between maternal, placental, fetal, and environmental factors. Early-onset FGR (onset <32 weeks' gestation) is often first suspected at routine mid-trimester sonographic assessment of fetal morphology, or identified as part of the placental syndrome, commonly maternal pre-eclampsia. Prenatal investigations may identify the cause of FGR. Timing of delivery is guided by serial sonographic surveillance of fetal growth and well-being and maternal condition, balancing the risk of stillbirth with the benefits of advancing gestation. This is particularly pertinent to severe early-onset FGR, a leading iatrogenic cause of very preterm birth. Prognosis is largely determined by the severity of FGR and its causes, gestation at birth, and birthweight. Pregnancy termination may be considered. Antenatal care and delivery in a tertiary center, provided by a multi-disciplinary team with expertise in managing high-risk pregnancies, are imperative to optimizing outcomes.

