TAVR can be associated to early valve thrombosis, characterized by thrombi formation near or attached to the prosthetic valve, with or without valve dysfunction. This dysfunction is associated with increased leaf thickening and reduced leaflet motion, as well as reduced orifice area or increased transvalvular gradient. Triggered multislice CT allows dynamic valve assessment and thrombosis…
AHA 2023 | Use of Apixaban for Stroke Prevention in Subclinical Atrial Fibrillation
Subclinical atrial fibrillation (AF), generally asymptomatic and of short duration, often requires continuous long-term monitoring using pacemakers or defibrillators for its detection. While subclinical AF is linked to an increased risk of stroke, the usefulness of oral anticoagulation as a treatment remains uncertain. In a double-blind randomized trial, one group received apixaban and the other…
Apixaban and Valve Thrombosis after TAVR
TAVR has been associated with early valve thrombosis, characterized by thrombus formation in the prosthetic valve with or without valve dysfunction. This dysfunction is related to leaflet thickening and reduced motion, reduced effective orifice area, or increased transvalvular gradient. A multidetector CT scan allows the dynamic assessment of valves and ruling out fibrosis vs. thrombosis. …
Are Antithrombotics Necessary in Outpatients after COVID-19?
According to this recent study (soon to be published in JAMA), antithrombotic therapy has no clinical benefits for outpatients with stable symptoms of COVID-19. Both aspirin and apixaban in therapeutic or prophylactic doses did not reduce major cardiovascular events compared against placebo, though these events are rare, which makes it difficult to show any benefit. …
ACC 2021 | ATLANTIS 4D-CT: Apixaban and Sub-Clinical Thrombosis After TAVR
Indicating apixaban after transcatheter aortic valve replacement (TAVR) does not significantly reduce the risk of sub-clinical leaflet thrombosis compared with the standard of care. These data come from the computerized tomography (CT) scan sub-study from ATLANTIS, presented during the scientific sessions of the American College of Cardiology (ACC) 2021 Congress. In patients with no prior…
ACC 2021 | ATLANTIS: Apixaban After TAVR vs. Standard of Care
Adding apixaban to the treatment of patients undergoing transcatheter aortic valve replacement (TAVR) was non-superior to standard antithrombotic treatment, according to the randomized ATLANTIS trial presented today at the American College of Cardiology (ACC) 2021 Congress. Given its easy indication and good safety profile, it could be an option to vitamin K antagonists for patients with…
Benefit of Anticoagulation in the Elderly with Atrial Fibrillation
Guidelines recommend oral anticoagulation for all ≥ 75-year-old patients with atrial fibrillation. However, there is little evidence as to its net clinical benefit in the elderly population. This study looked at the life net clinical benefit in atrial fibrillation patients over 75 years of age treated with warfarin or apixaban vs. no treatment. Researchers observed…
ACC 2019 | AUGUSTUS: Apixaban Plus P2Y12 Inhibitor Is the Best Combination in Atrial Fibrillation and Angioplasty
Aspirin increases bleeding with no ischemic benefit, but a trend toward more stent thrombosis with placebo warrants further studies. Patients with atrial fibrillation who receive an anticoagulant agent and coronary angioplasty with a stent, and then continue with aspirin, experience an increased risk of bleeding without any ischemic benefit whatsoever. The use of a…
Apixaban: An Alternative for Patients with Atrial Fibrillation Undergoing TAVR?
Courtesy of Dr. Carlos Fava. The prevalence of atrial fibrillation in patients undergoing transcatheter aortic valve replacement (TAVR) is high (32.9%, according to the PARTNER Trial, and 46.8%, according to the CoreValve High-Risk Study), and is associated with thromboembolic events (as in all other populations). Apixaban has shown to benefit patients with nonvalvular atrial fibrillation,…