Objective: To evaluate the accuracy of three
different ultrasound formulas in estimation of fetal weight
in suspected macrosomia early in labour.
Design: A prospective clinical trial.
Setting: Department of Obstetrics & Gynecology,
Cairo University.
Participants: Pregnant females presenting
in early labour with clinical impression of
macrosomia were examined by ultrasound and
those with abdominal circumference more or
equal to 35cm were selected for the study.
Interventions: Every woman was
considered as herself control and fetal weight was
calculated using Campbell & Wilkin, Hadlock et
al. and Shepard et al., formulas. The expected
fetal weight was then compared by the real fetal
weight.
Results: There is no difference between
different formulas for estimation of fetal weight
in suspected macrosomic babies as proved by
different statistical methods. There was a good
correlation between the expected fetal weight
estimated by different formulas with the real fetal
weight.
Conclusion: Prediction of macrosomia
early in labour provides reliable data that can help
in decision making with reasonable accuracy of
different formulas.