Application of fetal ductus venous hemodynamics in screening of chromosomal abnormalities / 吉林大学学报(医学版)

ABSTRACT

Objective:To detect the blood flow sepectrum of fetal ductus venosus (DV) with color Doppler ultrasound, and to explore the application of the fetal DV in screening the chromosome abnormalities.Methods:The blood flow spectra of fetal DV in antenatal examination normal group (320cases, with 11-40weeks of gestation) and antenatal examination abnormal group (48cases, within 11-35weeks of gestation) were detected with color Doppler and pulse Doppler ultrasound, and chromosome examination was performed in abnormal group.The fetal DV blood flow patterns (S wave, D wave, a wave) were observed, and karyotype analysis was performed in abnormal group.Results:The normal Doppler spectrum of the DV in fetuses showed the same three-phase waves while the abnormal Doppler spectrum of the DV in fetuses showed a wave reserved or absented.A total of 48cases of chromosome in abnormal group were examined;12cases of chromosome abnormality were found in this study (10cases of DV abnormality and 2cases of DV normality) .A total of 36cases of normal chromosomes were found which (11cases of abnormal DV and 25cases of normal DV) .The abnormal detection rate of DV blood flow spectrum in chromosome abnormal group was higher than that in chromosome normal group (χ2=9.723, P=0.002) .Conclusion:The abnormality of fetal DV blood flow spectrum can increase the detection rate of chromosome abnormalities and ultrasonography could be used as the primary basis for screening the chromosome abnormality in early pregnancy..