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Maternal-Fetal MedicineSociety
SG-010GuidelineUltrasound

Fetal growth restriction (FGR)

Definition by Delphi consensus, the Doppler monitoring algorithm and determining the timing of delivery.

Version 2.238 pagesUpdated 14 March 2025Ultrasound Diagnostics Committee

Key recommendations

  • Separate algorithms for early (< 32 wk) and late (≥ 32 wk) FGR
  • Umbilical artery Doppler as the basis of monitoring
  • Ductus venosus determines timing of delivery in early FGR
  • Cerebroplacental ratio in late FGR

Managing FGR requires regular assessment of fetal wellbeing and identifying the optimal moment for delivery — balancing prematurity against intrauterine risk.

Note: A guideline is a recommendation and does not replace the clinician's professional judgement in an individual case. Departing from it is acceptable where the reasoning is documented.