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Association of Smoking Status With Long‐Term Mortality and Health Status After Transcatheter Aortic Valve Replacement: Insights From the Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy Registry Chimney technique in a TAVR-in-TAVR procedure with high risk of left main artery ostium occlusion Clinical Impact of Valvular Heart Disease in Elderly Patients Admitted for Acute Coronary Syndrome: Insights From the Elderly-ACS 2 Study Suture- or Plug-Based Large-Bore Arteriotomy Closure: A Pilot Randomized Controlled Trial Relationship Between Hospital Surgical Aortic Valve Replacement Volume and Transcatheter Aortic Valve Replacement Outcomes Bioprosthetic valve oversizing is associated with increased risk of valve thrombosis following TAVR Prognostic implications of baseline 6‐min walk test performance in intermediate risk patients undergoing transcatheter aortic valve replacement Incidence and Outcomes of Surgical Bailout During TAVR : Insights From the STS/ACC TVT Registry Outcomes 2 Years After Transcatheter Aortic Valve Replacement in Patients at Low Surgical Risk Prior Balloon Valvuloplasty Versus Direct Transcatheter Aortic Valve Replacement: Results From the DIRECTAVI Trial

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.