Conversation: The conversation between human and AI assistant.
[|Human|] hello, my other half is getting concerned about growth of our baby during pregnancy. we have recently had our 20wk scan (19+6) and the measurements are showing things that are making her concerned. the scanner at the time did not seem concerned, and the computer system also showed no concerns, but having checked online she has found that people with very similar and in some cases not as severe readings, have been refered for further growth scans. our measurments were; femur length 29mm abdominal circ 148mm head circ 163mm tcd 19mm. anything to ease her mind would be appreciated. j
[|AI|]  Hello, and I hope I can help you today. The absolute measurements of the femur length, abdominal circumference are used to calculate the approximate weight of the baby. That weight is then compared to the average weight of all fetuses at the same gestational age and expressed as a percentile. If your babies measurement is not less than the 10th percentile, further surveillance is not necessary.However, after 20 weeks your prenatal care provider will measure the size of her belly from visit to visit and if it does not increase over time they are likely to repeat the ultrasound. So I hope I was able to answer your question today and that this information is reassuring. Best wishes,