What is the recommended frequency of ultrasound for monitoring estimated fetal weight (EFW) in cases where EFW is between the 3rd to 10th percentile?

When monitoring estimated fetal weight (EFW) in cases where the EFW falls between the 3rd to 10th percentile, the recommended frequency is every 3-4 weeks. This interval allows for adequate assessment of fetal growth while minimizing unnecessary interventions or maternal anxiety.

Fetuses that are small for gestational age (SGA), particularly those below the 10th percentile, require careful observation due to potential complications associated with restricted growth. Monitoring every 3-4 weeks strikes a balance between ensuring close surveillance and allowing for sufficient time to assess changes in growth patterns without overwhelming the healthcare system or the mother.

More frequent monitoring, like every week or every 2 weeks, may be reserved for fetuses showing concerning growth patterns or changes in health status, but for stable cases within the 3rd to 10th percentile, every 3-4 weeks is deemed appropriate. Monthly monitoring would be too infrequent to detect important changes in fetal growth, making that option less suitable.