Left Atrial Appendage Occlusion in Patients With Anticoagulation Failure vs Anticoagulation Contraindication
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Le résumé fourni par la source
BACKGROUND: Left atrial appendage occlusion (LAAO) provides mechanical cardioembolic protection for atrial fibrillation (AF) patients who cannot use oral anticoagulation therapy (OAT). Patients with a thrombotic event despite OAT are at high risk for recurrence and may also benefit from LAAO. OBJECTIVES: This study sought to investigate the efficacy of LAAO in AF patients with a thrombotic event on OAT compared to: 1) LAAO in AF patients with a contraindication for OAT; and 2) historical data. METHODS: The international LAAO after stroke despite oral anticoagulation (STR-OAC LAAO) collaboration included patients who underwent LAAO because of thrombotic events on OAT. This cohort underwent propensity score matching and was compared to the EWOLUTION (Evaluating Real-Life Clinical Outcomes in Atrial Fibrillation Patients Receiving the WATCHMAN Left Atrial Appendage Closure Technology) registry, which represents patients who underwent LAAO because of OAT contraindications. The primary outcome was ischemic stroke. Event rates were compared between cohorts and with historical data without OAT, yielding relative risk reductions based on risk scores. RESULTS: Analysis of 438 matched pairs revealed no significant difference in the ischemic stroke rate between the STR-OAC LAAO and EWOLUTION cohorts (2.5% vs 1.9%; HR: 1.37; 95% CI: 0.72-2.61). STR-OAC LAAO patients exhibited a higher thromboembolic risk (HR: 1.71; 95% CI: 1.04-2.83) but lower bleeding risk (HR: 0.39; 95% CI: 0.18-0.88) compared to EWOLUTION patients. The mortality rate was slightly higher in EWOLUTION (4.3% vs 6.9%; log-rank P = 0.028). Relative risk reductions for ischemic stroke were 70% and 78% in STR-OAC LAAO and EWOLUTION, respectively, compared to historical data without OAT. CONCLUSIONS: LAAO in patients with a thrombotic event on OAT demonstrated comparable stroke rates to the OAT contraindicated population in EWOLUTION. The thromboembolic event rate was higher and the bleeding rate lower, reflecting the intrinsically different risk profile of both populations. Until randomized trials are available, LAAO may be considered in patients with an ischemic event on OAT.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Left Atrial Appendage Occlusion in Patients With Anticoagulation Failure vs Anticoagulation Contraindication
- Date Crossref
- 01/05/2024
- Éditeur
- Elsevier BV
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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St. Antonius Ziekenhuis pays non établi dans la noticeOrganisme public
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Amsterdam University Medical Centers Department of Cardiology pays non établi dans la noticeÉtablissement de santé
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Metropolitana Milanese (Italy) pays non établi dans la noticeEntreprise
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Vita-Salute San Raffaele University pays non établi dans la noticeUniversité ou école supérieure
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Istituti di Ricovero e Cura a Carattere Scientifico pays non établi dans la noticeÉtablissement de santé
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University of Milan Department of Clinical Electrophysiology and Cardiac Pacing pays non établi dans la noticeUniversité ou école supérieure
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Centro Cardiologico Monzino pays non établi dans la noticeÉtablissement de santé
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Johns Hopkins University Department of Clinical Electrophysiology and Cardiac Pacing pays non établi dans la noticeUniversité ou école supérieure
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Institute of Cardiology Department of Coronary and Structural Heart Diseases pays non établi dans la noticeStructure de recherche
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Corona (Poland) pays non établi dans la noticeEntreprise
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Rigshospitalet Heart Center pays non établi dans la noticeÉtablissement de santé
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Aarhus University Hospital Department of Cardiology pays non établi dans la noticeÉtablissement de santé
St. Antonius Ziekenhuis, Department of Cardiology — Amsterdam University Medical Centers et Metropolitana Milanese (Italy), avec 9 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.