Sinus venous atrial septal defects are commonly associated with abnormal pulmonary venous connection. Numerous surgical techniques have been proposed with excellent short- and long-term outcomes. Pulmonary and superior vena cava obstructions, as well as rhythm disturbances, are the most common problems seen during follow up. However, acute postoperative superior vena cava obstruction with successful percutaneous covered-stent implantation has not been reported in the literature. The objective of this study is to report a unique case of acute obstruction of the superior vena cava on the first postoperative day after sinus venous atrial septal defect repair in an infant who was successfully relieved by a percutaneous angioplasty with covered-stent implantation, and the midterm follow up after this intervention.