“Fetal Growth Charts”: Comparison of Cross-Sectional Ultrasound Examinations with Birth Weight

Bernstein, Ira M.; Meyer, Marjorie; Capeless, Eleanor L.

doi:10.3109/14767059409017271

Cited by 19 publications

(7 citation statements)

References 10 publications

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“…The present results are more consistent with a notion that peak length velocity occurs later in gestation, possibly early in the third trimester, and/or that the velocity curve is flatter and extends into the third trimester. The latter suggestion of a flatter, more prolonged length growth curve is supported by some ultrasound studies of normal pregnancies in women from developed countries (Bertino et al, 1996;Bernstein et al, 1994Bernstein et al, , 1997.…”

Section: Discussionmentioning

confidence: 80%

“…The precise timing of the peak in fetal linear growth and the ponderal velocity is not known, however, due to the reliance on cross-sectional data on fetal size at birth (Cronk, 1983). Several studies have shown that fetal growth curves based on ultra-sound differ from those based on crosssectional data, but also have confirmed that growth in length proceeds in advance of growth in mass in normal full-term births (Hediger et al, 1995;Goldenberg et al, 1985;Ott, 1993;Bernstein et al, 1994).…”

mentioning

confidence: 99%

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The timing of maternal weight gain during pregnancy and fetal growth

1999

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The morbidity, mortality, and growth patterns of intrauterine growth retarded (IUGR) infants vary according to body proportionality, or the ponderal index. Much less in known, however, about the factors that give rise to the various forms of IUGR. This study tests that hypothesis that the rate of maternal weight gain during early/mid and late pregnancy are differentially related to body size and proportions at birth in a nutritionally stressed population in rural Malawi. The data consist of prospectively collected measurements of maternal weight and infant size at birth on 272 mother‐infant pairs. The results reveal that early/mid and late weight gain are both related to birth weight and length, but not to the ponderal index. Late weight gain is particularly predictive of infant size among thin women (BMI ⩽ 18.5) and is several times stronger than early/mid weight gain. These findings do not support the timing hypothesis as previously stated in the literature, but do add to the suggestions arising from a disparate literature that growth acceleration in length may precede acceleration in weight‐for‐length during a period of nutritional replection in phases of the life cycle characterized by rapid growth. Am. J. Hum. Biol. 11:627–637, 1999. © 1999 Wiley‐Liss, Inc.

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Section: Discussionmentioning

confidence: 80%

mentioning

confidence: 99%

The timing of maternal weight gain during pregnancy and fetal growth

1999

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“…Birth weight percentile was determined using locally derived cross-sectional hybrid growth curves validated against intrauterine fetal growth patterns [19][20][21]. These curves combine cross-sectionally acquired preterm (535 weeks gestation) ultrasound estimates of fetal weight with near-term and term birth weight to generate accurate modelling of longitudinal intrauterine growth.…”

Section: Methodsmentioning

confidence: 99%

Maternal hemoglobin concentration and its association with birth weight in newborns of mothers with preeclampsia

Amburgey¹,

Ing²,

Badger

et al. 2009

DJMF

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OBJECTIVE Maternal hemoglobin concentration is inversely related to newborn size presumably through plasma volume constriction. We sought to determine whether birth weight would show an inverse relationship to hemoglobin concentration in a group of infants whose mothers had preeclampsia, where plasma volume constriction is common. METHODS Electronic and paper chart review identified 142 nulliparous women with preeclampsia (excluding HELLP syndrome). Birth weight percentile was determined based on cross-sectional hybrid growth curves. Maximal third trimester maternal hemoglobin concentrations were obtained and standardized to z-scores based on gestational age matched normative data. Birth weight percentile was examined as a function of hemoglobin z-score using appropriate statistics. RESULTS Average gestational age at delivery was 35.9±1.9 weeks. Mean birth weight percentile for infants of preeclamptic mothers was 34±32. Mean hemoglobin z-score for mothers with preeclampsia was 0.3±1.5, significantly higher than a control population (p = 0.04). Maternal hemoglobin z-score was inversely associated with birth weight percentile (r = − 0.18, P = 0.03). CONCLUSION Maternal hemoglobin concentrations are significantly elevated prior to delivery in women with preeclampsia. There is a statistically significant inverse correlation of maternal hemoglobin concentration to birth weight percentile.

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“…Birth weight percentile was determined using locally derived cross-sectional hybrid growth curves validated against intrauterine fetal growth patterns [19–21]. These curves combine cross-sectionally acquired preterm (<35 weeks gestation) ultrasound estimates of fetal weight with near-term and term birth weight to generate accurate modeling of longitudinal intrauterine growth.…”

Section: Methodsmentioning

confidence: 99%