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3.10 Fetal Growth Surveillance: assessing growth rate Copy

Chapter 3 – Risk Assessment Copy 3.10 Fetal Growth Surveillance: assessing growth rate Copy
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  • Normal growth rate / velocity varies with gestational age and is highest in the middle of the third trimester. It also varies with the customised growth potential of each fetus.
  • For example, the average (50th centile) velocity, expressed in grams per day (g/d), can range from 22g/d between 28-31 weeks in a small mother with a baby of expected term weight of 3100g, to 32g/d between 34-37 weeks for a larger mother expecting a baby weighing 3700 g (= 50% higher).
  • Similarly, the 10th and 3rd centile growth rates shown as the lower limits on the GROW chart also vary with gestational age and the expected term optimal weight in each pregnancy. 
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