On The Determination of Gestational Age of Foetuses In-Utero

Arimie Christopher O. and Onwuegbuchu Ebere O.
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Arimie Christopher O.: Department of Radiology, University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria
Onwuegbuchu Ebere O.: Radiographers Registration Board of Nigeria, Abuja, F.C.T., Nigeria

International Journal of Research and Innovation in Applied Science, 2021, vol. 6, issue 9, 10-18

Abstract: Background: Accurate measurements of bi-parietal diameter (BPD) and femoral length (FL) is key to developing acceptable nomograms for assessing gestation age (GA). Aim and Objective: To determine which sonographic biometric parameters, BPD and FL gives a more accurate GA of foetuses in-utero. Methodology: Linear regression models were fitted to the BPD, FL and GA data obtained in-utero with ultrasound scanner. The models were tested for equality. The GA obtained in second and third trimester using BPD and FL respectively, were compared for significant difference. BPD and FL nomograms were generated. Results: The difference in mean GA using BPD and FL is not significant in second trimester (p = 0.612) but significant in third trimester (p = 0.001). The nomograms showed GA of 13 weeks when BPD is 25.4 mm, 40.0 weeks when BPD is 101.9 mm; 13 weeks when FL is 11.6 mm and 40.0 weeks when FL is 82.1 mm. Conclusion: FL is more accurate for GA determination especially, in third trimester. BPD and FL are useful for assessing foetal growth/anomalies, and determining GA of foetuses with high degree of accuracy.

Date: 2021
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