What should you know about stage 1 fetal growth restriction?

Fetal growth restriction, also called intrauterine growth restriction or IUGR, is different from a constitutionally small baby: some babies are naturally small and healthy. The assessment may consider ultrasound measurements, the pattern of growth over time, amniotic fluid, placental blood flow and blood flow in the umbilical cord. Stage 1 generally describes an earlier or less severe concern, but the label does not predict the outcome by itself.

You may not feel a change because fetal growth restriction often has no specific symptoms. Reduced or changed fetal movement can be a warning sign, while the condition itself is assessed mainly through antenatal checks and ultrasound.

Keep every scheduled antenatal appointment and follow the movement-check advice given by your maternity team. Monitoring may include a growth scan, Doppler assessment of placental and cord blood flow, blood-pressure checks and fetal heart monitoring. Take prescribed medicines as directed, and tell the team about headaches, visual changes, upper abdominal pain or swelling that develops suddenly. Do not start supplements, bed rest or other treatments without discussing them with your clinician.

The timing and method of birth depend on growth measurements, blood flow, fetal wellbeing, gestational age and your health. A diagnosis does not automatically mean an immediate delivery or a caesarean birth.

Contact your maternity unit promptly if your baby’s movements are reduced, absent or noticeably different from their usual pattern. Seek urgent assessment for vaginal bleeding, fluid leaking, regular painful contractions, severe headache, changes in vision, severe pain below the ribs, chest pain, trouble breathing or feeling acutely unwell. These signs need assessment even if your next scan or appointment is soon.

Ask which measurement led to the stage 1 assessment, whether the placenta and umbilical-cord blood flow are reassuring, how often growth and fetal wellbeing will be checked, and which movement changes should prompt a call. You can also ask what findings would change the birth plan and whether you should meet the neonatal team before delivery.