Avaliação da estimativa do peso fetal por meio da ultrassonografia tridimensional
Palavras-chave:
ultrassonografia pré-natal, peso ao nascer, peso fetalResumo
O objetivo desta pesquisa foi avaliar a estimativa do peso fetal medida pela ultrassonografia tridimensional comparada com a ultrassonografia bidimensional. Foi realizado ensaio clínico diagnóstico com 49 gestantes acompanhadas no Hospital Universitário Pedro Ernesto. O peso fetal foi estimado por meio da realização de exames ultrassonográficos bidimensional e tridimensional em gestantes cujo parto ocorreu até 48 horas, e as estimativas obtidas foram comparadas com o peso do recém-nascido. O teste de Shapiro-Wilk foi realizado para avaliar a distribuição normal dos dados. A comparação das diferentes fórmulas de estimativa do peso fetal com o peso ao nascer e a comparação das fórmulas entre si foram feitas, respectivamente, por meio dos testes de Wilcoxon e Kruskal-Wallis. Os resultados foram: Wilcoxon: ultrassonografia bidimensional valor p=0,86; ultrassonografia tridimensional valor p=0,24; ultrassonografia bidimensional associada à tridimensional valor p=0,10; Kruskal-Wallis: valor p=0,18. A avaliação da variabilidade intraobservador utilizando apenas o volume de fração da coxa mostrou concordância de 90%, e utilizando parâmetros bidimensionais e tridimensionais, 96%. Na variabilidade interobservador, essa concordância foi, espectivamente, de 90 e 96%. Concluiu-se que não há diferença estatisticamente significativa entre a estimativa do peso fetal realizada por meio da ultrassonografia bidimensional e a realizada por meio da ultrassonografia tridimensional na população estudada.
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Referências
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