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

Abstract

BW estimated through formulae that use the fetal arm and thigh volumes assessed through 3DUS are not superior to two-dimensional formulae.

Is there any relation between umbilical artery and vein diameter and estimated fetal weight in healthy pregnant women?

“…An accurate prediction of fetal weight during gestation can provide useful information for assessing fetal and newborn health status, enabling the clinician to better predict infant morbidity and mortality. Many fetal parameters are used for prediction of EFW, one of which is the umbilical cord [9][10][11][12][13]. Studies have shown that starting from the first trimester there is an association between umbilical cord diameter and anthropometric parameters.…”

Estimativa do peso fetal através da utilização da ultrassonografia

“…17 Nardozza e colaboradores concluíram que o peso fetal estimado por fórmulas que utilizam volumes de coxa e braço não apresenta acurácia superior àquele estimado por fórmulas tradicionais. 16 Da mesma forma, Lindell e Marsal, em 2009, quando estudaram gestações com mais de 41 semanas, não observaram diferenças entre ultrassonografia bidimensional e tridimensional. 18 Estes mesmos autores, no entanto, em estudo de 2012, mostraram que a habilidade de detectar fetos macrossômicos em um grupo de alto risco é maior com a utilização de fórmulas com parâmetros tridimensionais, 30 apresentando em fetos com peso estimado maior que 4300 g uma taxa de detecção de 93% com uma taxa de falso positivo de 38%.…”

“…[8][9][10][11][12][13][14][15] No entanto, a literatura permanece controversa com relação ao tema, havendo trabalhos que não demonstram melhora da acurácia com a utilização de volumes fetais na estimativa de peso. [16][17][18] O objetivo deste estudo foi revisar a literatura relacionada à avaliação ultrassonográfica da estimativa do peso fetal, buscando fontes de inacurácia e métodos que possam melhorar tal estimativa.…”

Role of 3-D Ultrasound in Clinical Obstetric Practice: Evolution Over 20 Years

“…The 3-DUS measurements were taken in the same manner as 2-DUS measurements, but adjustments in the orthogonal axes were made according to Lima et al (2012). Nardozza et al (2010c) were unable to find statistically significant differences between 2-DUS and 3-DUS calculations using three different models based on 3-D fetal thigh volume, 3-D upper-arm volume or both, after examining 81 Brazilian singleton pregnancies with delivery expected to occur within 48 h. Nonetheless, when 2-DUS and 3-DUS measurements were grouped together, a better estimation of fetal birth weight compared with that obtained with 2-DUS ultrasound measurements alone was obtained (Nardozza et al 2010a). In addition, Beninni et al (2010) reported that VOCAL with 30 rotation angle and multiplanar mode with 3.0-mm plane interval produced significant results in estimating fetal birth weight, and both generated formulas from these methods can be used interchangeably.…”