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Figure 3 Partial Anomalous Pulmonary Venous Connection of the RUPV to the SVC in a 3-Year-Old Girl
(A) A contrast-enhanced 3-dimensional angiogram seen from posterior shows the anomalous connection of the right upper pulmonary vein (RUPV) to the superior vena cava (SVC). The small right lower pulmonary vein (RLPV) connects normally to the left atrium (LA). (B) Time-flow volume curves of the right upper and left upper pulmonary veins and right and left pulmonary arteries. The flow pattern of the right upper pulmonary vein is different from that of the left upper pulmonary vein. There is continuous flow without discernable systolic and diastolic waves in the anomalous right upper pulmonary vein. The right pulmonary artery shows a less resistant flow pattern with the systolic wave reaching its peak later and showing slower deceleration as compared with the left pulmonary artery. The blood flow ratio between the right and left lung is 56%:44%. The pulmonary-to-systemic blood flow ratio was 2.2, and the patient required surgical repair of the anomalous connection. Ao = aorta; RA = right atrium; RPA = right pulmonary artery.
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