ABSTRACT

Background: To plan mode of delivery and to prevent complications, exact analysis of fetal weight is very important.

Aim: To assess the concordance of sonographically estimated fetal weight by using Hadlock formula and actual birth weight at term in Pakistani population.

Methodology: This study was done at New Radiology Department, Services Hospital, Lahore. Duration of study was 6 months. It was a cross sectional study. 200 females in last trimester of pregnancy fulfilling inclusion criteria were enrolled, using random sampling technique. Data is analyzed by using SPSS version 17.

Results: The mean age was 31+4.0 years, mean estimated fetal weight (EFW) was 3288±429 gms and mean actual birth weight (ABW) was 3259 ± 430 gms. Concordance was 100%. The absolute difference between EFW and ABW was 29±28.03 gms. Percentage error of fetal weight estimation was 0.92 ± 0. 91.

Conclusion: The use of Hadlock formula to estimate fetal weight in Pakistani population within 72 hours of delivery shows acceptable results when comparing with actual birth weight. Keywords: Concordance, Fetal Weight, Sonography, Hadlock formula