Short-Term Anticoagulation Versus Antiplatelet Therapy for Preventing Device Thrombosis Following Left Atrial Appendage Closure

Summary

The objective of the study is to compare short-term (8 weeks) anticoagulation therapy (DOAC) vs. antiplatelet therapy for the prevention of device thrombosis following transcatheter LAAC.

Timeline

Start

2018-09-01

Primary completion

2025-08-01

Completion

2030-09-01

Publications

• Results Asmarats L, Rodes-Cabau J. Percutaneous Left Atrial Appendage Closure: Current Devices and Clinical Outcomes. Circ Cardiovasc Interv. 2017 Nov;10(11):e005359. doi: 10.1161/CIRCINTERVENTIONS.117.005359.
• Results Main ML, Fan D, Reddy VY, Holmes DR, Gordon NT, Coggins TR, House JA, Liao L, Rabineau D, Latus GG, Huber KC, Sievert H, Wright RF, Doshi SK, Douglas PS. Assessment of Device-Related Thrombus and Associated Clinical Outcomes With the WATCHMAN Left Atrial Appendage Closure Device for Embolic Protection in Patients With Atrial Fibrillation (from the PROTECT-AF Trial). Am J Cardiol. 2016 Apr 1;117(7):1127-34. doi: 10.1016/j.amjcard.2016.01.039. Epub 2016 Feb 1.
• Results Saw J, Tzikas A, Shakir S, Gafoor S, Omran H, Nielsen-Kudsk JE, Kefer J, Aminian A, Berti S, Santoro G, Nietlispach F, Moschovitis A, Cruz-Gonzalez I, Stammen F, Tichelbacker T, Freixa X, Ibrahim R, Schillinger W, Meier B, Sievert H, Gloekler S. Incidence and Clinical Impact of Device-Associated Thrombus and Peri-Device Leak Following Left Atrial Appendage Closure With the Amplatzer Cardiac Plug. JACC Cardiovasc Interv. 2017 Feb 27;10(4):391-399. doi: 10.1016/j.jcin.2016.11.029.
• Results Tzikas A, Shakir S, Gafoor S, Omran H, Berti S, Santoro G, Kefer J, Landmesser U, Nielsen-Kudsk JE, Cruz-Gonzalez I, Sievert H, Tichelbacker T, Kanagaratnam P, Nietlispach F, Aminian A, Kasch F, Freixa X, Danna P, Rezzaghi M, Vermeersch P, Stock F, Stolcova M, Costa M, Ibrahim R, Schillinger W, Meier B, Park JW. Left atrial appendage occlusion for stroke prevention in atrial fibrillation: multicentre experience with the AMPLATZER Cardiac Plug. EuroIntervention. 2016 Feb;11(10):1170-9. doi: 10.4244/EIJY15M01_06.
• Results Lempereur M, Aminian A, Freixa X, Gafoor S, Kefer J, Tzikas A, Legrand V, Saw J. Device-associated thrombus formation after left atrial appendage occlusion: A systematic review of events reported with the Watchman, the Amplatzer Cardiac Plug and the Amulet. Catheter Cardiovasc Interv. 2017 Nov 1;90(5):E111-E121. doi: 10.1002/ccd.26903. Epub 2017 Feb 1.
• Results Fauchier L, Cinaud A, Brigadeau F, Lepillier A, Pierre B, Abbey S, Fatemi M, Franceschi F, Guedeney P, Jacon P, Paziaud O, Venier S, Deharo JC, Gras D, Klug D, Mansourati J, Montalescot G, Piot O, Defaye P. Device-Related Thrombosis After Percutaneous Left Atrial Appendage Occlusion for Atrial Fibrillation. J Am Coll Cardiol. 2018 Apr 10;71(14):1528-1536. doi: 10.1016/j.jacc.2018.01.076.
• Results O'Hara C, O'Hara GE, Jacques F, Champagne J, Lemyre M, Charbonneau L, O'Connor K, Bernier M, Beaudoin J, Rodes-Cabau J, Paradis JM. Run With the Hare and Hunt With the Hounds: Watchman Device Surgical Resection in the Setting of Recurrent Device Related Thrombi in a Patient With Bleeding Diathesis. JACC Cardiovasc Interv. 2016 Dec 12;9(23):e223-e225. doi: 10.1016/j.jcin.2016.09.041. No abstract available.
• Results Rodriguez-Gabella T, Nombela-Franco L, Regueiro A, Jimenez-Quevedo P, Champagne J, O'Hara G, Bernier M, Macaya C, Rodes-Cabau J. Single Antiplatelet Therapy Following Left Atrial Appendage Closure in Patients With Contraindication to Anticoagulation. J Am Coll Cardiol. 2016 Oct 25;68(17):1920-1921. doi: 10.1016/j.jacc.2016.08.016. No abstract available.
• Results Jalal Z, Dinet ML, Combes N, Pillois X, Renou P, Sibon I, Iriart X, Thambo JB. Percutaneous left atrial appendage closure followed by single antiplatelet therapy: Short- and mid-term outcomes. Arch Cardiovasc Dis. 2017 Apr;110(4):242-249. doi: 10.1016/j.acvd.2016.09.006. Epub 2017 Jan 3.
• Results Rodes-Cabau J, O'Hara G, Paradis JM, Bernier M, Rodriguez-Gabella T, Regueiro A, O'Connor K, Beaudoin J, Puri R, Cote M, Champagne J. Changes in Coagulation and Platelet Activation Markers Following Transcatheter Left Atrial Appendage Closure. Am J Cardiol. 2017 Jul 1;120(1):87-91. doi: 10.1016/j.amjcard.2017.03.253. Epub 2017 Apr 12.
• Results Schwartz RS, Holmes DR, Van Tassel RA, Hauser R, Henry TD, Mooney M, Matthews R, Doshi S, Jones RM, Virmani R. Left atrial appendage obliteration: mechanisms of healing and intracardiac integration. JACC Cardiovasc Interv. 2010 Aug;3(8):870-7. doi: 10.1016/j.jcin.2010.04.017.
• Results Bass JL. Transcatheter occlusion of the left atrial appendage--experimental testing of a new Amplatzer device. Catheter Cardiovasc Interv. 2010 Aug 1;76(2):181-5. doi: 10.1002/ccd.22536.
• Results Kar S, Hou D, Jones R, Werner D, Swanson L, Tischler B, Stein K, Huibregtse B, Ladich E, Kutys R, Virmani R. Impact of Watchman and Amplatzer devices on left atrial appendage adjacent structures and healing response in a canine model. JACC Cardiovasc Interv. 2014 Jul;7(7):801-9. doi: 10.1016/j.jcin.2014.03.003.
• Results January CT, Wann LS, Alpert JS, Calkins H, Cigarroa JE, Cleveland JC Jr, Conti JB, Ellinor PT, Ezekowitz MD, Field ME, Murray KT, Sacco RL, Stevenson WG, Tchou PJ, Tracy CM, Yancy CW; ACC/AHA Task Force Members. 2014 AHA/ACC/HRS guideline for the management of patients with atrial fibrillation: executive summary: a report of the American College of Cardiology/American Heart Association Task Force on practice guidelines and the Heart Rhythm Society. Circulation. 2014 Dec 2;130(23):2071-104. doi: 10.1161/CIR.0000000000000040. Epub 2014 Mar 28. No abstract available.
• Results Verheugt FW, Granger CB. Oral anticoagulants for stroke prevention in atrial fibrillation: current status, special situations, and unmet needs. Lancet. 2015 Jul 18;386(9990):303-10. doi: 10.1016/S0140-6736(15)60245-8. Epub 2015 Mar 14.
• Results Lopez-Lopez JA, Sterne JAC, Thom HHZ, Higgins JPT, Hingorani AD, Okoli GN, Davies PA, Bodalia PN, Bryden PA, Welton NJ, Hollingworth W, Caldwell DM, Savovic J, Dias S, Salisbury C, Eaton D, Stephens-Boal A, Sofat R. Oral anticoagulants for prevention of stroke in atrial fibrillation: systematic review, network meta-analysis, and cost effectiveness analysis. BMJ. 2017 Nov 28;359:j5058. doi: 10.1136/bmj.j5058.
• Rodes-Cabau J, Nombela-Franco L, Cruz-Gonzalez I, Hibbert B, Freixa X, Masson JB, Ibrahim R, Estevez-Loureiro R, Millan X, Kass M, Paradis JM, Champagne J, Salinas P, Laffond A, Abdel-Razek O, Labinaz M, Cepas-Guillen P, Arzamendi D, Vidal-Cales P, Pavesi M, Cote M, O'Hara G, Salaun E. Short-Term Anticoagulation Versus Dual Antiplatelet Therapy for Preventing Device Thrombosis Following Left Atrial Appendage Closure: The ANDES Randomized Clinical Trial. Circulation. 2025 Dec 23;152(25):1759-1768. doi: 10.1161/CIRCULATIONAHA.125.077469. Epub 2025 Oct 26.

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Indications