aPTT activated partial thromboplastin time AUC area under the curve CDT catheter-directed thrombolysis FFP fresh frozen plasma IQR interquartile range IVC inferior vena cava PCICU pediatric cardiac intensive care unit PT prothrombin time RBC red blood cells/red blood cell transfusion SVC superior vena cava TAPVR total anomalous pulmonary venous return TE thromboembolism tPA tissue plasminogen activator 1 Introduction The incidence of pediatric thromboembolism (TE) has increased significantly...