Estimation of Birth Weight by Two-Dimensional Ultrasonography

• DOI: 10.1097/01.aog.0000296656.81143.e6
• Publication Date: 2010-11-30T12:43:08Z
• Authors: Marco Scioscia; Antonella Vimercati; Oronzo Ceci; Mario Vicino; Luigi E. Selvaggi
• Keywords: Fetal weight; Kilogram

In Brief OBJECTIVE: To assess the accuracy and characterize two-dimensional ultrasonographic formulas for estimation of birth weight according to type fetal biometric parameters these rely on make predictions. METHODS: A prospective recruitment 589 pregnant women was carried out this cross-sectional study. Different were taken ultrasonographically estimate using 35 different formulas. Only those patients who delivered within 48 hours considered analysis (n=441). Differences between estimated actual assessed by percentage error, in predictions ±10% ±15% use Bland-Altman method. All individually clustered basis information that they incorporate. RESULTS: Twenty-nine provided an overall mean absolute error less than or equal 10%, with (69.2% 86.5%, respectively). Twenty showed a good (bias 0.50 less) low variability (mean standard deviation 1.2). Among categorized algorithms, based head-abdomen-femur measurements lowest error. Upon stratification weight, group abdomen femur performed best fetuses weighing more 3,500 g (P<.01). CONCLUSION: Our findings show most are relatively accurate at predicting up g, all algorithms tend underestimate large fetuses. LEVEL OF EVIDENCE: III Best-performing length abdominal circumference.