Does Presence of Bilateral Superior Vena Cava Impact Transcatheter Closure of Sinus Venosus Defects?

Key Points

• To investigate how the presence of bilateral superior vena cava affects the transcatheter closure of sinus venosus defects.
• Examined feasibility post-interrogation in cases with BilSVC
• Evaluated stent diameters and stability during closure
• Assessed residual leak and thrombosis rates
• Feasibility of closure was lower in patients with BilSVC
• Frequent need for balloon upsizing despite imaging predictions
• Higher rates of thrombosis observed, impacting thromboprophylaxis