Aortic Valve Stenosis Clinical Trial
Official title:
Rotterdam EDOXaban Leaflet Evaluation in Patients After Transcatheter Aortic Valve Implantation
A single-center, investigator-initiated, single arm interventional study in patients undergoing transfemoral transcatheter aortic valve replacement (TAVR) in the Erasmus Medical Center in Rotterdam (NL). Study population will be patients undergoing TAVR with no formal indication for oral anticoagulant (OAC) and no dual antiplatelet therapy (DAPT) requirement for coronary stents. Primary endpoint is the incidence of leaflet thickening on MSCT after three months of edoxaban treatment.
Rationale: Thromboembolic- and bleeding events can occur after TAVI and can have great consequences. There is currently no evidence-based guideline on prevention of thromboembolic events after TAVI and the current standard of care with DAPT 3-6 months is based on expert opinion. Recently multislice computed tomography (MSCT) studies identified bioprosthesis leaflet thickening and impaired leaflet motion after TAVI. The goal of this study is to investigate whether in TAVI patients, treatment with edoxaban leads to a reduction in leaflet thickening incidence after 3 months and whether it is safe and clinically efficient. Objective: To investigate whether treatment with edoxaban leads to a decrease in incidence of leaflet thickening and is clinical efficient and safe. Study design: A single-center, investigator-initiated, open-label, observational study. Study population: Patients undergoing transfemoral transcatheter aortic valve replacement in the Erasmus University Medical Center with no formal novel oral anticoagulants/vitamin-K-antagonist (NOAC/VKA) indication. Intervention (if applicable): Patients will be treated with edoxaban for a period of 3 months following TAVI. Afterwards they will switch to acetylsalicylic acid. Main study parameters/endpoints: The incidence of leaflet thickening on MSCT 3 months after TAVI and edoxaban treatment. Nature and extent of the burden and risks associated with participation, benefit and group relatedness: Thus far edoxaban has proven to be safe and non-inferior to treatment with warfarin in several indications. The role of anticoagulant agents in TAVI still has to be unravelled. Subjects participating in this trial are possibly at higher risk for bleeding complications than patients being treated with dual antiplatelet therapy after TAVI. ;
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