Accuracy of Ultrasound Determination of Estimated Fetal Weight in Small for Gestational Age Pregnancies

Background: Ultrasound is more accurate when it follows clinical diagnosis of intrauterine growth restriction. Based on the review of literature, we recommend routine ultrasound examination in the third trimester for timely diagnosis of SGA. Aims & Objectives: This study was done to assess the accuracy of ultrasound examination in estimation of fetal weight from 37 weeks to 40 weeks of pregnancy in appropriate for gestational age and small for gestational age. Material & Methods: The prospective randomized observational study whereby all ultrasonic fetal weight estimations were carried by prosound i4 ALOKA. Fifty pregnant women at term with appropriate for gestational age pregnancy and fifty other women at term with small for gestational age pregnancy had ultrasonic estimation of fetal weight performed within a week of delivery. Results: The present study showed that majority of subjects of control and study group were in the age group 21 to 30 years and co-efficient of correlation (r) = 0.6981 suggest high positive correlation between actual birth weight and estimated fetal weight by ultrasound. Conclusion: The study showed that ultrasound predicts the fetal weight in both categories with a mean absolute error of 1.092435 USG estimation of fetal weight can be used to predict the birth weight with high degree of accuracy and plan delivery and neonatal management for a better neonatal outcome.