Doppler of the Ductus Venosus in Detection of Chromosomal Abnormalities - Figures and Images

First presented as a poster display at FIGO2000, Washington DC, September, 2000
Murta C.G.V.*+, Moron A.F.* and Ávila M.A.P.*
* Department of Obstetrics and Gynecology, Federal University of São Paulo, - UNIFESP/EPM, São Paulo; + Federal University of Espírito Santo - Brazil. E-mail: cgvmurta@zaz.com.br. 

Murta C.G.V., Moron A.F., and Ávila M.A.P.; November 2000; Doppler of the Ductus Venosus in Detection of Chromosomal Abnormalities

click images for full-size 
Figure 1 Fig. 1- Unidirectional and triphasic waveform of the ductus venosus blood flow velocity (normal fetus (46XX) of 12 weeks of gestation. The first peak occurs during ventricular systole (S) and the second during ventricular diastole (D) and the phase "a" represents the end of diastole and atrial contraction.
Figure 2 Fig. 2 - Characteristic ductus venosus waveforms in fetus with trisomy 22 with 12 weeks of gestation. Note the reversed flow velocity during the atrial contraction. The nuchal translucency thickness was 2.5 mm in this case.
Table 1 Table 1 - Blood flow velocity in the ductus venosus of normal fetuses and abnormal karyotype fetuses in relation to the NT at 10-14 weeks of gestation. A reverse or absent velocity during atrial contraction was considered an abnormal flux. The type of chromosomopathy is specified. The asterisk signifies the presence of hypoplasia of the left heart (major cardiac malformation).
Figure 3 Fig. 3 -Relation between the flow velocity during atrial contraction in the ductus venosus and crow-rump length at 10-14 weeks of gestation in normal fetuses and abnormal karyotype fetuses. 
Figure 4 Fig. 4 -Relation between the nuchal translucency thickness and crow-rump length at 10-14 weeks of gestation in normal fetuses and abnormal karyotype fetuses.
Figure 5 Fig. 5 -Relation between the flow velocity during atrial contraction in the ductus venosus and nuchal translucency thickness at 10-14 weeks of gestation in normal fetuses and abnormal karyotype fetuses.

 

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