Screening for Macrosomia at Term: Performances of Ultrasonographic Estimation of the Fetal Weight and the Use of the Uterine Height

Abstract

Objective: The aim of our study was to assess the performance for the detection of macrosomia at term of estimating fetal weight corrected by the growth effect (EFWc) measured by ultrasound, EFWC via measuring uterine height (UH), the waist circumference and higher uterine height threshold or equal to 37. Methods:It is a retrospective study of 233 patients whose newborn macrosomes were sampled. The estimated fetal weight (EFW) ultrasound was performed during the 41th week of amenorrhea, as the EFW by measuring waist circumference with the Warsof 's formula and EFW by measuring the uterine height according to the kayem's formula. These 3 estimates were corrected taking into account the growth effect. Results:The proportion of estimates with a margin of error of less than 10% was 61.3%, 50% and 68.4% respectively for the EFWc EFWUHc and EFWACc. ROC curves of the EFWc EFWUHc and EFWACc find the Aires under the curve (AUC) to 0.859, 0.783 and 0.856. The EFWc and EFWACc are significantly higher than for term screening for macrosomia compared to EFWUHc (p <0.001 and p <0.001 respectively). Conclusion:Measuring the EFWc and EFWACc are reliable and simple means for screening for macrosomia term, but will be improved.