Is being one month smaller at 38 weeks of pregnancy a malformation?

Patient's question:

At 38 weeks, the ultrasound shows a biparietal diameter of 77 mm, indicating intrauterine growth restriction and delayed development. However, at 31 weeks, the baby was 3 weeks smaller, and now at 39 weeks, the check shows the baby is 4 weeks smaller. I would like to know if a biparietal diameter of 77 mm at 39 weeks could be a sign of a malformation?

Doctor's answer:

Considering it may be due to daily malnutrition causing the fetus to be smaller, with the period of being small being around seven days. At 35 weeks, the biparietal diameter is 77mm, slightly smaller. The condition is considered to be growth stagnation after conception, with delayed development speed. IV nutrition can now be administered. It is recommended to pay more attention to rest, increase nutrition in daily diet, and eat more high-protein foods such as fish and shrimp. At the same time, calcium supplements should be taken orally, and regular follow-up is recommended.

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