Prediction of birth weight using fetal thigh and upper-arm volumes by three-dimensional ultrasonography in a Brazilian population

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dc.contributor.author Machado Nardozza, Luciano Marcondes [UNIFESP]
dc.contributor.author Vieira, Márcio Fragoso [UNIFESP]
dc.contributor.author Araujo Junior, Edward [UNIFESP]
dc.contributor.author Rolo, Liliam Cristine [UNIFESP]
dc.contributor.author Moron, Antonio Fernandes [UNIFESP]
dc.date.accessioned 2016-01-24T13:59:41Z
dc.date.available 2016-01-24T13:59:41Z
dc.date.issued 2010-05-01
dc.identifier http://dx.doi.org/10.3109/14767050903184215
dc.identifier.citation Journal of Maternal-fetal & Neonatal Medicine. London: Informa Healthcare, v. 23, n. 5, p. 393-398, 2010.
dc.identifier.issn 1476-7058
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/32541
dc.description.abstract Methods. A cross-sectional study involving 81 live singletons was performed. VolArm and VolTh were obtained using 3DUS multiplanar mode with 5 mm slices. Linear and polynomial regressions were calculated to determine the best formula to predict BW using VolArm and VolTh. Analysis of variance was used to compare errors in BW using these formulae and using Shepard's and Hadlock's formulae. the interclass correlation coefficient (ICC) was used to assess intra and interobserver variability of measurements.Results. the best formula to predict BW based on VolArm was a simple linear equation (BW = 803.91 + 39.89VolArm), and for VolTh it was a second degree polynomial equation (BW = 32.37VolTh - 0.06VolTh<SU2</SU). A third formula using both parameters was also constructed (BW = 792.87 + 22.81VolArm + 7.54VolTh). the error (E), percent error (PE), absolute error (AE) and absolute percent error (APE) for the BW prediction using VolArm were 0 g, 163.4 g, 0.5% and 5.4%, respectively. the same results for E, PE, AE and APE using VolTh were 0.99 g, 155.5 g, 0.3% and 5.2% and for the combined formula using both VolArm and VolTh the E, PE, AE and APE were 0 g, 138.4 g, -0.4% and 4.6%, respectively. VolArm and VolTh were highly reproducible with intraobserver ICC of 0.98 and 0.99 and interobserver ICC of 0.96 and 0.97, respectively.Conclusions. BW estimated through formulae that use the fetal arm and thigh volumes assessed through 3DUS are not superior to two-dimensional formulae. en
dc.format.extent 393-398
dc.language.iso eng
dc.publisher Informa Healthcare
dc.relation.ispartof Journal of Maternal-fetal & Neonatal Medicine
dc.rights Acesso restrito
dc.subject Birth weight en
dc.subject fetal thigh volume en
dc.subject fetal upper-arm volume en
dc.subject three-dimensional ultrasonography en
dc.title Prediction of birth weight using fetal thigh and upper-arm volumes by three-dimensional ultrasonography in a Brazilian population en
dc.type Artigo
dc.rights.license http://informahealthcare.com/userimages/ContentEditor/1255620309227/Copyright_And_Permissions.pdf
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation Universidade Federal de São Paulo, Dept Obstet, São Paulo, Brazil
dc.description.affiliationUnifesp Universidade Federal de São Paulo, Dept Obstet, São Paulo, Brazil
dc.identifier.doi 10.3109/14767050903184215
dc.description.source Web of Science
dc.identifier.wos WOS:000276462500007



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