CLOT-LESS - CLOsure Tailored: LEss Antithrombotic Strategy After LAAC for Stroke Prevention

Exclusion Criteria

• •Active indication for anticoagulation OTHER than atrial fibrillation at the time of enrollment and/or the predicted/unpredicted occurrence of such indications during the entire study period (e.g., mechanical valve, acute VTE, recent PE requiring \>3 months anticoagulation);
• •Inability to tolerate at least 3 months of apixaban therapy (for LAAC arm);
• •Indications for antiplatelet therapy or therapy with P2Y12 inhibitors at the time of inclusion and/or the predicted/unpredicted occurrence of such indications during the entire study period;
• •The presence of mechanical prosthetic heart valves, mitral stenosis of severe or moderate degree;
• •Active DVT requiring anticoagulation;
• •Congenital or acquired haemostasis disorders, rheumatic heart disease or recurrent deep vein thrombosis;
• •Left ventricular ejection fraction (LVEF) \< 30%;
• •Glomerular filtration rate (GFR) \< 30 ml/min (stage IV or V chronic kidney disease) or dialysis patient;
• •Severe liver failure, including cirrhosis and Child-Pugh Class C/D;
• •NYHA class IV congestive heart failure;
• •The patient had a myocardial infarction - MI with or without ST segment elevation (STEMI, NSTEMI) with or without intervention, within 30 days before LAAC;
• •The patient had a stroke (of any cause, ischemic or hemorrhagic) within 30 days before LAAC;
• •Intracardiac thrombus before LAAC;
• •Major bleeding according to BARC criteria (type 3 and higher) within 30 days before LAAC or before randomization;
• •Amyloid cardiomyopathy;
• •Platelet count \< 100,000 x 109/l;
• •The patient participates in another study, with the exception of observational studies without therapeutic interventions;
• •Pregnant or breast-feeding patients, patients planning pregnancy during the study period;
• •The LAAC procedure was unsuccessful or interrupted for technical reasons;
• •PDL (peridevice leak) ≥ 3 mm;
• •Contraindications for one of the treatment regimens prescribed by the study protocol (including allergic reactions);
• •Planned cardiac or non-cardiac surgical procedure within 30 days before or 90 days after LAAC. Minor procedures not requiring discontinuation of antithrombotic therapy are permitted (e.g., cardioversion, catheter ablation, cataract surgery);
• •The patient has a heart tumor, active infection, signs of physiological tamponade;
• •The documented life expectancy of the patient is less than 12 months;