IntroductionTo explore the diagnostic value of spatiotemporal image correlation (STIC) for different types of fetal conotruncal defects (CTDs).MethodsThe clinical data and STIC images of 174 fetuses with CTDs diagnosed via prenatal ultrasound were analyzed retrospectively.ResultsAmong the 174 cases of CTDs, 58 were tetralogy of Fallot (TOF); 30, transposition of great arteries (TGA) (D‐TGA, 23 cases; cc‐TGA, 7 cases); 26, double outlet of the right ventricle (DORV); 32, persistent arterial trunk (PTA) (type A1, 15 cases; type A2, 11 cases; type A3, 5 cases; type A4, 1 case); and 28, pulmonary atresia (PA) (ventricular septal defect, 24 cases; ventricular septal integrity, 4 cases). Among the cases, 156 were complicated with complex congenital intracardiac and extracardiac malformations. The abnormal display rate of the four‐chamber view of two‐dimensional echocardiography was low. The display rate of the permanent arterial trunk was the highest (90.6%) in STIC imaging.ConclusionsSTIC imaging can be used in the diagnosis of different types of CTDs, especially in persistent arterial trunks, and thus has great value for the clinical treatment and prognosis of these defects.
Objectives: This study aims to explore the clinical value of prenatal ultrasonography in the diagnosis of the common arterial trunk (CAT) classification and associated deformities. Materials and methods: The two-dimensional ultrasound images spatiotemporal image correlations (STICs) and clinical data of 108 foetuses diagnosed with CAT malformations were retrospectively analysed, their CAT types were classified, and the correlations between these different types and foetal malformations and pregnancy outcomes were analysed. Results: Among the 108 foetuses, there were 47 cases (43.5%) of type A1, 51 cases (47.3%) of type A2, 9 cases (8.3%) of type A3 and 1 case of type A4 (0.9%), of which 22 cases (20.4%) were isolated CAT, 56 cases (51.8%) had complex intra-cardiac structural abnormalities, 30 cases (27.8%) had intra-cardiac or extra-cardiac structural abnormalities, 17 cases had 1 other system abnormality, and 5 cases had 2 other system abnormalities. Four cases were combined with 3 other system abnormalities, while 4 cases were combined with 4 other system abnormalities, among which the facial and physical abnormalities had the highest incidence (40.0%). The STIC images were completely displayed in 88 cases (81.5%). Isolated CAT and CAT combined with other malformations were significantly correlated with foetal pregnancy outcomes ( P < 0.05). Conclusions: Prenatal ultrasonography had a high clinical application value for classifying CAT. Pregnancy outcomes were highly correlated with the classification and combined intra-cardiac and extra-cardiac structural malformations. The early assessment of foetal prognosis before birth has great value for clinical intervention.
ObjectivesTo investigate the clinical value of prenatal ultrasound in the diagnosis of the common arterial trunk (CAT) classification and associated malformations.Materials and MethodsThe 2D ultrasound images, spatiotemporal image correlations (STICs) and clinical data of 88 fetuses diagnosed with CAT malformations by prenatal ultrasound were retrospectively analyzed and classified. The correlation between different types, fetal malformation and pregnancy outcomes were analyzed.ResultsAmong the 88 fetuses, there were 39 cases (44.32%) of type A1, 40 cases (45.45%) of type A2, 8 cases (9.09%) of type A3, and 1 case of type A4 (1.14%). There were 16 cases (18.18%) with isolated CAT, 48 cases (54.55%) with complex intra‐cardiac structural abnormalities, and 24 cases (27.27%) with intra‐cardiac and extra‐cardiac structural abnormalities. In extra‐cardiac structural malformations, 14 cases were associated with 1 other system abnormality, 4 cases with 2 other system abnormalities, 3 cases with 3 other system abnormalities, while 3 cases were combined with 4 other system abnormalities, among which the facial and physical abnormalities had the highest incidence (39.13%). The STIC images were completely displayed in all 88 cases. There was a statistical difference between isolated CAT and CAT combined with other abnormalities in fetal pregnancy outcomes.ConclusionsPrenatal ultrasound had a high clinical application value in CAT classification. Pregnancy outcomes were highly correlated with the classification and associated intra‐cardiac and extra‐cardiac structural malformations. The early evaluation of fetal prognosis before birth has important value for clinical intervention.
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