Ultrasonographic study and Doppler flow velocimetry of maternal kidneys and liver in low-risk pregnancy

Radiologia Brasileira

Cibele Helena Daher¹  Andrea Cavalanti Gomes¹  Sergio Kobayashi¹  Giovanni Guido Cerri¹  Maria Cristina Chammas¹ 

关键词: Pregnancy;    Pyelocaliceal dilatation;    Nephrolithiasis;    Cholelithiasis;    Portal vein;    Right hepatic vein;    Gravidez;    Dilatação pielocalicinal;    Litíase renal;    Colelitíase;    Veia porta;    Veia hepática direita;   

DOI  :  10.1590/0100-3984.2013.1822

来源: SciELO

【 摘 要 】

AbstractObjective:Longitudinal study with B-mode ultrasonography and Doppler ultrasonography of maternal kidneys and liver in low-risk pregnancy, to establish and quantify normality parameters, correlating them with physiological changes.Materials and Methods:Twenty-five pregnant women were assessed and selected to participate in the study, each of them undergoing four examinations at the first, second, third trimesters and postpartum.Results:Findings during pregnancy were the following: increased renal volume, pyelocaliceal dilatation with incidence of 45.4% in the right kidney, and 9% in the left kidney; nephrolithiasis, 18.1% in the right kidney, 13.6% in the left kidney. With pyelocaliceal dilatation, mean values for resistivity index were: 0.68 for renal arteries; 0.66 for segmental arteries; 0.64 for interlobar arteries; 0.64 for arcuate arteries. Without pyelocaliceal dilatation, 0.67 for renal arteries; 0.64 for segmental arteries; 0.63 for interlobar arteries; and 0.61 for arcuate arteries. Portal vein flow velocities presented higher values in pregnancy, with mean value for maximum velocity of 28.9 cm/s, and 22.6 cm/s postpartum. The waveform pattern of the right hepatic vein presented changes persisting in the postpartum period in 31.8% of the patients. Cholelithiasis was observed in 18.1% of the patients.Conclusion:Alterations in renal volume, pyelocaliceal dilatation, nephrolithiasis, cholelithiasis, changes in portal vein flow velocity, alterations in waveform pattern of the right hepatic vein, proved to be significant.

【 授权许可】

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