Journal of South Asian Federation of Obstetrics and Gynaecology

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VOLUME 13 , ISSUE 4 ( July-August, 2021 ) > List of Articles

Original Article

Serial Measurements of Fetal Head Circumference and Abdominal Circumference to Predict Fetal Growth Restriction in a Sri Lankan Study Population

Rasika S de Silva, Hemantha Perera

Keywords : Fetal growth restriction, Noncommunicable diseases, Ponderal index, Serial ultrasound scans, Thrifty phenotype

Citation Information : de Silva RS, Perera H. Serial Measurements of Fetal Head Circumference and Abdominal Circumference to Predict Fetal Growth Restriction in a Sri Lankan Study Population. J South Asian Feder Obs Gynae 2021; 13 (4):202-206.

DOI: 10.5005/jp-journals-10006-1933

License: CC BY-NC 4.0

Published Online: 20-11-2021

Copyright Statement:  Copyright © 2021; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim and objective: Prediction of fetal growth restriction (FGR) by serial ultrasound measurement of head circumference (HC) and abdominal circumference (AC) of the fetus applied routinely to all mothers irrespective of risk status for FGR and small for gestational age. Materials and methods: A prospective study was done of 508 pregnant women who underwent two successive growth scans 4 weeks apart at Sri Jayewardenepura General Hospital, Sri Lanka. FGR was identified by graphically plotting serial fetal AC and HC. Postnatally, growth restriction was diagnosed based on ponderal index (PI). Sensitivity, specificity, positive predictive value, and likelihood ratio of predicting FGR by successive serial ultrasound measurements of fetal AC and HC were calculated. Results: Based on fetal AC and HC, FGR was present in 223 of 508 fetuses (43.89%). Based on PI, 224 of 508 (44.1%) neonates were growth-restricted. Sensitivity, specificity, positive predictive value, positive likelihood ratio, and negative likelihood ratio of predicting FGR by serial fetal AC and HC were 82.59, 86.62, 82.59%, 6.2, and 0.2, respectively. Conclusion: Serial ultrasound measurements of fetal AC and HC plotted on a fetal growth centile chart routinely carried out in all mothers irrespective of risk status for FGR increases the detection of FGR.


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