Prospective study on fetal weight estimation using limb circumferences obtained by three‐dimensional ultrasound

Favre, R.; Bader, Arnim A.; Nisand, G.

doi:10.1046/j.1469-0705.1995.06020140.x

Cited by 43 publications

(28 citation statements)

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“…Several studies have demonstrated that fetal thigh and upper-arm volumes are better predictors of fetal weight than conventional 2-D measurements 111–118. A multivariable approach that incorporates other maternal and fetal characteristics may further improve the estimation 119–120.…”

Section: Improving Accuracy Of Estimated Fetal Weight By Ultrasonomentioning

confidence: 99%

Defining normal and abnormal fetal growth: promises and challenges

Zhang

Merialdi

Platt

et al. 2010

American Journal of Obstetrics and Gynecology

229

170

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Normal fetal growth is a critical component of a healthy pregnancy and influences the long-term health of the offspring. However, defining normal and abnormal fetal growth has been a long-standing challenge in clinical practice and research. The authors review various references and standards that are widely used to evaluate fetal growth, and discuss common pitfalls of current definitions of abnormal fetal growth. Pros and cons of different approaches to customize fetal growth standards are described. The authors further discuss recent advances towards an integrated definition for fetal growth restriction. Such a definition may incorporate fetal size with the status of placental health measured by maternal and fetal Doppler velocimetry and biomarkers, biophysical findings and genetics. Although the concept of an integrated definition appears promising, further development and testing are required. An improved definition of abnormal fetal growth should benefit both research and clinical practice.

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Section: Improving Accuracy Of Estimated Fetal Weight By Ultrasonomentioning

confidence: 99%

Defining normal and abnormal fetal growth: promises and challenges

Zhang

Merialdi

Platt

et al. 2010

American Journal of Obstetrics and Gynecology

229

170

View full text Add to dashboard Cite

show abstract

“…[42][43][44] Another parameter, ArmC, can be very difficult to measure in a reproducible manner if the examiner does not precisely use the middle of the humeral diaphysis. Favre and coworkers 45,46 have solved this problem by using 3-dimensional multiplanar views to standardize the arm circumference measurement at the midpoint of the humeral shaft. Others have used 3-dimensional sonography to measure fetal arm volume for birth WT prediction and to evaluate intrauterine growth.…”

mentioning

confidence: 92%

The Fetal Arm

Lee

Deter

McNie

et al. 2005

Journal of Ultrasound in Medicine

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Objective. The goals were to introduce fractional arm volume (AVol) as a new soft tissue parameter of fetal growth assessment and to develop individualized growth standards, based on Rossavik models, for AVol, midarm circumference (ArmC), and humeral diaphysis length (HDL). Methods. A prospective longitudinal study of 22 fetuses was conducted using 2-and 3-dimensional sonography. Three new growth parameters (HDL, ArmC, and AVol) were used to establish individualized standards for arm growth with the use of Rossavik functions [P = c(t), where P is the anatomic parameter; c, k, and s are model coefficients; and t is the time variable]. Second-trimester models were specified from the linear slopes of growth curves before approximately 28.0 menstrual weeks. For a given fetus, normal thirdtrimester trajectories were predicted for each parameter. Observed and predicted measurements were compared by percent deviations. Results. Rossavik functions fit all parameter trajectories extremely well (R 2 = 95.7%-99.4%). By fixing coefficients k at their mean values, their respective fits did not change, and the variabilities of both coefficients c and s were reduced. Coefficient c was also significantly related to second-trimester slope, as was s to c, for all 3 parameters (R 2 = 97.7%-98.7%; P < .0001). Mean percent deviations between observed and predicted third-trimester HDL, ArmC, and AVol measurements were -0.1% ± 2.9%, 0.5% ± 4.6%, and 0.4% ± 8.5%, respectively. Conclusions. Individualized growth assessment, using HDL and ArmC, can accurately predict normal arm growth during the third trimester of pregnancy. AVol may also allow earlier detection and improved monitoring of soft tissue abnormalities that can occur in fetuses with growth disturbances.

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“…The accuracy of Hadlock formula is variable among researchers. Its mean percentage error ranged from À9.1% to À14.2%, whereas the random error ranged from 7% to 11.9% [5,16,17]. These variations are higher for macrosomic and low birth weight fetuses, where there is a tendency for under-estimation and over-estimation of the birth weights, respectively [5,17].…”

Section: Discussionmentioning

confidence: 99%