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Effects of chorionic villus sampling on placental hemodynamic assessed by three-dimensional power Doppler ultrasonography
No full textEffects of chorionic villus sampling on placental hemodynamic assessed by three-dimensional power Doppler ultrasonography
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Use of 4-dimensional sonography in the measurement of fetal great vessels in mediastinum to distinguish true-from false-positive coarctation of the aorta
No full textAbnormal cardiac function in fetuses with increased nuchal translucency
No full textObjective To evaluate cardiac function in structurally and chromosomally normal fetuses with increased nuchal translucency (NT). Methods Forty-two structurally and chromosomally normal fetuses with increased NT at 11-14 weeks of gestation underwent fetal echocardiographic examination at 20-23 weeks. Fifty fetuses with normal NT values were considered as controls. Pulmonary and aortic peak velocity and time to peak velocities were measured as indices of ventricular systolic function. The ratios between the E-wave and A-wave (E/A) and the ratios between the E-wave and time velocity integral (E/TVI) at the level of both atrioventricular valves were evaluated as indices of ventricular diastolic function. Results In fetuses with increased NT the E/A ratios were significantly decreased when compared to control fetuses at the level of both the mitral (0.52 +/- 0.09 vs. 0.60 +/- 0.10, P = 0.0002) and tricuspid (0.51 +/- 0.09 vs. 0.61 +/- 0.09, P < 0.0001) valves. Similar results were found for the E/TVI ratios (mitral valve 4.79 +/- 11.03 vs. 5.63 +/- 1.23, P = 0.0007 and tricuspid valve 4.40 +/- 0.88 vs. 5.19 +/- 0.82, P < 0.0001). No significant relationship was found between the degree of NT and the abnormalities in Doppler indices. There were no significant differences in Doppler systolic indices. Conclusion Structurally and chromosomally normal fetuses with increased NT have low E/A and E/TVI ratios at 20-23 weeks of gestation. These findings might indicate cardiac diastolic dysfunction. Copyright (C) 2003 ISUOG. Published by John Wiley Sons, Ltd
Use of the multiplanar display in evaluation of a persistent left superior vena cava in the fetal heart using 4-dimensional ultrasonography: advantage of adding the spin technique
No full textUse of the multiplanar display in evaluation of a persistent left superior vena cava in the fetal heart using 4-dimensional ultrasonography: advantage of adding the spin technique
No full textUse of 4-dimensional sonography in the measurement of fetal great vessels in mediastinum to distinguish true-from false-positive coarctation of the aorta
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