Case Report: Downsizing Patent Ductus Arteriosus Stent Using a Modified Microvascular Plug

Maintaining patency of the ductus arteriosus is crucial for ductdependant congenital heart diseases while awaiting definitive interventions. However, it may be challenging to balance systemic and pulmonary blood flow (PBF) when placing a Patent Ductus Arteriosus (PDA) stent. There is currently limited data when it comes to successful transcatheter techniques in treating over-shunting. We describe a successful application of a modified Medtronic Microvascular Plug (MVP)™ System to effectively treat a case of PDA stent over-shunting in a onemonth-old infant with critical Pulmonary Stenosis (PS).