What are the 4 FGR stages?

Stage 1: EFW below 10th percentile, UA-PI above 95th percentile, CPR below 5th percentile. Stage 2: absent EDF. Stage 3: reversed EDF or absent/reversed DV A-wave. Stage 4: abnormal BPP (4/10 or less twice in 6h). Stage 3-4 requires prompt delivery planning.

When is delivery recommended in FGR?

Stage 1: expectant to 37 weeks. Stage 2: delivery at 34-37 weeks. Stage 3: delivery at 30-34 weeks (steroids first). Stage 4: immediate delivery after stabilization. Neonatal ICU availability is essential for Stage 3-4 deliveries.

What is late-onset FGR?

Late-onset FGR (after 32-34 weeks) is common (3-5% pregnancies) and often shows mildly abnormal CPR without severe Doppler. It has lower perinatal mortality than early-onset FGR but contributes disproportionately to stillbirth and perinatal morbidity near term.

Fetal Growth Restriction Severity Staging (Careggi/ACOG)

Stage fetal growth restriction (FGR) severity using Doppler parameters and BPP to guide delivery timing. Stage 1-4 framework: from EFW below 10th percentile with normal Doppler (Stage 1) to reversed DV A-wave or abnormal BPP (Stage 4).

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Frequently Asked Questions

What are the 4 FGR stages?

When is delivery recommended in FGR?

What is late-onset FGR?