Figure 2 Echocardiography of APVS at 16 weeks of gestation
A. 2D nonstandard axis view of DA showed the narrowed pulmonary annulus, expansive pulmonary trunk and branches and narrowed DA ; B. CDFI showed the wide and bright antegrade blood flow in PA trunk and branches, and the dark blood flow in DA from PA to DAO; C. 5 chamber view showed the blood flow from RV and LV to the overriding AO; D. PA longitudinal view showed the retrograde blood flow from LPA and RPA to PA trunk and RV.
AAO: aortic arch; DAO: descending aorta; PA: pulmonary artery; LPA: left pulmonary artery; RPA: right pulmonary artery; RV: right ventricle; LV: left ventricle; AO: aortic artery.
White arrow showed DA