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Published online by Cambridge University Press: 10 July 2025
A newborn with right atrial isomerism, single-ventricle physiology, supracardiac total anomalous pulmonary venous connection, and pulmonary atresia underwent vertical vein stenting, resulting in ductus arteriosus compression. Subsequent ductal stenting restored patency, preventing haemodynamic compromise and ensuring survival. This case highlights the risk of secondary ductal obstruction in vertical vein stenting and the importance of early recognition and intervention.