A global reference for fetal-weight and birthweight percentiles

Prevalência de nascimentos pré-termo por peso ao nascer: revisão sistemática

“…In this study, newborns with birth weights incompatible with GA (< -3 SD or > 3 SD in the weight curve for WHO GA) were excluded from the analysis. 16 In all of the studies, the data of the last menstrual period (LMP) was the method used to calculate gestational age, sometimes complemented by ultrasound (US) or physical examination of the newborn. In the studies in Ribeirao Preto and Sao Luís, unknown gestational ages were imputed using a multiple regression model.…”

Seroprevalence of rubella in the cord blood of pregnant women and congenital rubella incidence in Nha Trang, Vietnam

“…Births were considered preterm if they occurred after less than 37 gestational weeks (GWs), and low birth weight (LBW) if the birth weight (BW) was less than 2500 g, following the guidelines in the International Classification of Diseases-10: version 2010 [13]. A diagram of BW percentiles by GWs was created based on data collected from subjects, using previous methods [14,15], with a mean BW at 40 weeks of 3379.6 g and a standard deviation of 11.4% of the mean BW. Babies who were "light-for-dates" (defined as those with BW below the 10 th percentile [13]) were identified from this figure (Appendix 1).…”

Fetal Size in a Rural Melanesian Population with Minimal Risk Factors for Growth Restriction: An Observational Ultrasound Study from Papua New Guinea

“…3,4 The International Fetal and Newborn Growth Consortium (INTERGROWTH)-21 study assesses fetal growth in cohorts with no obvious risk factors for fetal growth restriction (FGR) in eight geographical areas, including Kenya and India, with the aim of developing global standards for optimal fetal growth. 5 The most commonly used ultrasound-estimated fetal weight (EFW), birth weight (BW), and size reference charts (nomograms) are derived from industrialized and largely Caucasian populations, [6][7][8][9] and they may not be appropriate in all populations 1 ; particularly, their ability to accurately detect FGR may be limited. 10 A definitive diagnosis of FGR is made when serial ultrasound scans show a persistent downward deviation from the expected growth trajectory.…”

“…1,12,13 This could result in unnecessary intervention for a large number of pregnancies rather than targeting those fetuses that are truly growth-restricted, a disadvantageous scenario for low-income countries with strained health services. To overcome this problem, either currently available nomograms should be adjusted to local conditions, or fetal growth standards should be derived from the relevant populations.…”