Définitions : petit poids pour l’âge gestationnel et retard de croissance intra-utérin

Ego, Anne

doi:10.1016/j.jgyn.2013.09.012

Cited by 45 publications

(4 citation statements)

References 148 publications

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“…SGA status was defined by at least one ultrasound AC measurement at or below the 10 th percentile according to the fetal biometry curves used in our maternity ward [ 8 ]. It was defined as severe if the AC was below the 3 rd percentile and moderate if between the 3 rd and 10 th percentiles [ 9 ].…”

Section: Methodsmentioning

confidence: 99%

Prognostic Value of Umbilical and Cerebral Doppler in Fetal Growth Restriction: Comparison of Dichorionic Twins and Singletons

et al. 2015

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ObjectiveTo compare the prognostic value of fetal Doppler in dichorionic twins and singletons by measuring the interval between diagnosis of an abnormal Doppler flow and birth in fetuses who are small for gestational age (SGA).DesignComparative retrospective study using a prospectively collected database.SettingA level 3 maternity unit in France.PopulationFetuses from singleton and dichorionic pregnancies who are SGA (vascular or unexplained), defined by an abdominal circumference (AC) measurement below the 10th percentile and confirmed by a birth weight below the 10th percentile.MethodsFisher's exact and Chi-2 tests were used to compare frequencies, and the Mann-Whitney-Wilcoxon test was used to compare medians in non-Gaussian distributions.Main outcome measuresBoth neonatal outcomes and intervals between the first Doppler abnormality and birth were compared in the groups of dichorionic twins and singletons.ResultsObstetric and neonatal outcome were similar in the 104 SGA dichorionic twins and 170 SGA singletons. Abnormalities of umbilical artery Doppler, regardless of type, appeared at the same frequency in both groups (52.9%) but were identified earlier in twins (25 versus 28 weeks, p = 0.02). Among fetuses with abnormal Doppler flow, the interval between the finding and birth was significantly longer in the twins than the singletons (44 vs 15 days, p<0.01).ConclusionsThe prognostic value of an abnormal Doppler finding for the course of a pregnancy may be different in dichorionic twins and singletons. The management of women carrying SGA twins and the information provided to them should take these results into account.

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Section: Methodsmentioning

confidence: 99%

Prognostic Value of Umbilical and Cerebral Doppler in Fetal Growth Restriction: Comparison of Dichorionic Twins and Singletons

et al. 2015

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“…Apart from LBW, small newborns are identified through a variety of terms, such as small for gestational age or intra-uterine growth restricted (IUGR). These three locutions cover three overlapping but separate concepts without any international consensus about their precise definition (Wilcox, 2001;Ego, 2013;Cutland et al, 2017). The present scoping review Animal Health Research Reviews focused on LBW and tried to include all associated terms, with some studies possibly overlooked due to the fuzzy boundaries between the terms.…”

Section: Discussionmentioning

confidence: 99%

Definition of low birth weight in domestic mammals: a scoping review

Mugnier

Chastant-Maillard

Lyazrhi

et al. 2022

Anim. Health. Res. Rev.

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In people and animals, low birth weight (LBW) is recognized as highly predictive of health trajectory from the neonatal period to elderly ages. Regarding the neonatal period, although LBW is recognized as a major risk factor for neonatal mortality, there does not appear to be a clear definition of ‘when a birth weight should be considered low’ in all species. The aim of this work was to use the scientific literature available to map the various thresholds proposed to define LBW in domestic mammals. Using a standardized methodology, a scoping review was conducted through a literature search in three different bibliographic databases. After a two-step screening of 1729 abstracts and full-text publications by two independent reviewers, eleven studies met the inclusion criteria. Selected publications represented six mammalian species (rat, mouse, dog, pig, cow, and rabbit). Birth weight thresholds were identified through six different methods. In addition to the scarcity of scientific literature about the definition of LBW, this scoping review revealed the lack of standardization for the description, evaluation or the pertinence these definitions. Because the health consequences of LBW could be preventable, providing early identification of at-risk neonates, a consensus for the standardized definition of LBW is required.

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“…[4][5][6] Therefore, intrauterine growth screening aims to identify fetuses at risk of fetal growth restriction, frequently defined as those with an estimated fetal weight (EFW) under the 10th percentile of a reference population. [7][8][9][10] Customized growth charts, proposed by Gardosi in the 1990s, aim to improve growth screening by differentiating between constitutionally small fetuses and those with suboptimal growth. 11 They adjust for factors that physiologically affect birthweight, including maternal (pre-pregnancy weight, height, parity, ethnicity) and fetal (sex) factors.…”

Section: Introductionmentioning

confidence: 99%

Testing the assumptions of customized intrauterine growth charts using national birth studies

Hocquette

Monier

Blondel

et al. 2022

Acta Obstet Gynecol Scand

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Introduction Customized intrauterine growth charts are widely used for growth monitoring and research. They are based on three assumptions: (1) estimated fetal weight (EFW) has a normal distribution with a constant coefficient of variation at all gestational ages; (2) Hadlock’s growth curve accurately describes the relation between EFW and gestational ages; (3) associations between EFW and the fetal and maternal characteristics included in the customization model (fetal sex, pre‐pregnancy weight, height, parity) are proportional throughout pregnancy. The aim of this study was to test whether these underlying assumptions are verified. Material and methods Data came from (1) the French Longitudinal Study of Children (ELFE) cohort, which recruited births after 32 weeks' gestation in 349 maternity hospitals in France in 2011, and (2) the National Perinatal Survey, which included births from all French maternity hospitals in 2016. The study population included, respectively, 6 920 and 8 969 singleton non‐malformed term live births with data on customization characteristics and EFW. We computed the coefficient of variation by gestational age and then modeled the association of gestational age, maternal and fetal characteristics with EFW at the second and third trimester ultrasound and with birthweight using linear regression. To assess the proportionality of the impact of maternal and fetal characteristics, we computed the percent change in weight associated with these characteristics at these three time points. Results The coefficient of variation was close to 12% at each gestational age, but EFW was not normally distributed, leading to small but systematic underestimation of fetuses under the 10th percentile. Weights representing the 50th and 10th percentiles based on Hadlock’s growth trajectory were lower than observed or predicted weights. Most characteristics more strongly impacted weight at birth than during pregnancy. In the French Longitudinal study of Children (ELFE) cohort, boys were 1.8% (95% confidence interval [CI] 1.3–2.4) heavier than girls in the third trimester, whereas this percentage was 4.6% (95% CI 4.0–5.2) at birth. In the National Perinatal Survey, these percentages were 2.3% (95% CI 1.8–2.8) and 4.3% (95% CI 3.8–4.8). Conclusions These results from two independent sources revealed discrepancies between routine clinical EFW data used for growth monitoring and the customized growth model’s assumptions.

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Définitions : petit poids pour l’âge gestationnel et retard de croissance intra-utérin

Cited by 45 publications

References 148 publications

Prognostic Value of Umbilical and Cerebral Doppler in Fetal Growth Restriction: Comparison of Dichorionic Twins and Singletons

Prognostic Value of Umbilical and Cerebral Doppler in Fetal Growth Restriction: Comparison of Dichorionic Twins and Singletons

Definition of low birth weight in domestic mammals: a scoping review

Testing the assumptions of customized intrauterine growth charts using national birth studies

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