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| Effect of two-dimensional ultrasound combined with four-dimensional color Doppler ultrasound HD-flow color blood flow imaging for prenatal diagnosing congenital cardiac dysplasia |
| Mianyang 404 Hospital, Mianyang, Sichuan Province, 621000 |
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Abstract To explore the clinical value of two-dimensional ultrasound combined with four-dimensional color Doppler ultrasound HD-flow color blood flow imaging for prenatal diagnosing congenital cardiac dysplasia. Methods: 1100 singleton pregnant women who underwent prenatal routine two-dimensional ultrasound examination were selected in this study from January 2018 to April 2020. The women who had been suspected of intrauterine fetal cardiac dysplasia would be given examination of four-dimensional color Doppler ultrasound HD-flow. Based on the results by neonatal ultrasound diagnosis or pathological diagnosis after labor induction as the gold standard, the detection situation of fetal congenital heart diseases (FCHD) was analyzed, and the detection ratio of FCHD was compared between two-dimensional ultrasound alone and two-dimensional ultrasound combined with four-dimensional color ultrasound. Results: In the fetus of 1100 pregnant women, there were 30(2.73%) fetuses or newborns with FCHD. The detection rate of FCHD by two-dimensional ultrasound examination was 66. 7%, which was significant lower than that (90.0%) of the combined examination of two-dimensional ultrasound and four-dimensional color Doppler ultrasound HD-flow color blood flow imaging (P<0.05). There were 3 cases with misdiagnose by the combined examinations of the two ultrasound methods, which included 1 case with arterial arch malformation, 1 case with ventricular septal defect, and 1 case with pulmonary valve atresia. Conclusion: Conventional twodimensional ultrasound can be used as an important initial screening method for fetal congenital heart malformations. However, for those fetuses with abnormalities results by two-dimensional ultrasound, it is recommended to combination of two-dimensional ultrasound and four-dimensional color Doppler ultrasound HD-flow color blood flow imaging examination to further accurately evaluating the location and type of abnormalities.
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