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Timing of intervention in asymptomatic patients with valvular heart disease Transcatheter Aortic Valve Replacement vs Surgical Replacement in Patients With Pure Aortic Insufficiency Early Surgery or Conservative Care for Asymptomatic Aortic Stenosis Poor Long-Term Survival in Patients With Moderate Aortic Stenosis Considerations for Optimal Device Selection in Transcatheter Aortic Valve Replacement: A Review Incidence, predictors, and outcomes associated with acute kidney injury in patients undergoing transcatheter aortic valve replacement: from the BRAVO-3 randomized trial Cardiac Structural Changes After Transcatheter Aortic Valve Replacement: Systematic Review and Meta-Analysis of Cardiovascular Magnetic Resonance Studies Transcatheter Aortic Valve Replacement During Pregnancy Cardiovascular Magnetic Resonance as a complementary method to Transthoracic Echocardiography for Aortic Valve Area Estimation in patients with Aortic Stenosis: A systematic review and meta-analysis Reduced Leaflet Motion after Transcatheter Aortic-Valve Replacement

Original Research2020 Sep 1;41(33):3184-3197

JOURNAL:Eur Heart J . Article Link

Leaflet immobility and thrombosis in transcatheter aortic valve replacement

ACT Ng, DR Holmes, MJ Mack et al. Keywords: antiplatelet therapy; antithrombotic treatment; thrombosis; transcatheter aortic valve replacement; transcatheter heart valve

ABSTRACT

Transcatheter aortic valve replacement (TAVR) has grown exponentially worldwide in the last decade. Due to the higher bleeding risks associated with oral anticoagulation and in patients undergoing TAVR, antiplatelet therapy is currently considered first-line antithrombotic treatment after TAVR. Recent studies suggest that some patients can develop subclinical transcatheter heart valve (THV) thrombosis after the procedure, whereby thrombus forms on the leaflets that can be a precursor to leaflet dysfunction. Compared with echocardiography, multidetector computed tomography is more sensitive at detecting THV thrombosis. Transcatheter heart valve thrombosis can occur while on dual antiplatelet therapy with aspirin and thienopyridine but significantly less with anticoagulation. This review summarizes the incidence and diagnostic criteria for THV thrombosis and discusses the pathophysiological mechanisms that may lead to thrombus formation, its natural history, potential clinical implications and treatment for these patients.