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deriving birth-weight (BW) charts is misleading, because a large proportion of babies born preterm arise from pathological pregnancy. We propose that the reference population for BW charts, as in the case of EFW charts, should comprise all babies at a given gestational age, including those still in utero.
The birth weight is plotted on the reference range for gestational age derived from the formula reported by: Nicolaides KH, Wright D, Syngelaki A, Wright A, Akolekar R. Fetal Medicine Foundation fetal and neonatal population weight charts.
20 kwi 2007 · Results. 18 959 fetuses were included in the study. New charts and equations for Z-score calculations at 20–36 weeks' gestation are reported. Comparison with the birth-weight chart showed that the EFW was noticeably larger at 25–36 weeks' gestation.
The estimated fetal weight from the measurements of HC, AC and FL is derived from the formula reported by: Hadlock FP, Harrist RB, Martinez-Poyer J. In utero analysis of fetal growth: a sonographic weight standard.
24 sty 2017 · Growth charts for the fetal ultrasound measurements biparietal diameter, head circumference, abdominal circumference, femur length, and humerus length; for estimated fetal weight; and for the ratios femur length/head circumference and femur length/biparietal diameter in one Excel file. (XLSX)
3 wrz 2023 · Results. The mean birth weight of boys was 3453 ± 540 g, and this was higher compared with that of girls (3317 ± 509 g). At each gestational age, boys exhibited higher birth weights than girls. The weight range between the 10th and 90th percentiles was 1061 g for boys and 1016 g for girls.
The theoretical and true proportions of percentiles for the studied population were estimated based on six growth charts (Fenton, Intergrowth Project, global reference chart, Yudkin, Dubiel, and the World Health Organization chart). Results: The 50th percentile male and female newborns at 40 weeks weighed 3645.8 and 3486.7 g, respectively.
