Left atrial appendage-occluding devices for stroke prevention in patients with nonvalvular atrial fibrillation
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AbstractAtrial fibrillation is associated with a fivefold increased risk for stroke, mostly secondary to thromboembolic events. Anticoagulation with a vitamin K antagonist is the standard medical therapy for these patients but is difficult to maintain within the therapeutic range and requires frequent monitoring and dose adjustments. Approximately 90% of thromboembolism occurs in the left atrial appendage (LAA) in patients with nonvalvular atrial fibrillation. Occlusion of flow into the LAA may prevent thrombus formation in the appendage and, hence, reduction of stroke. Recently, several percutaneous transcatheter techniques of LAA exclusion using the Percutaneous Left Atrial Appendage Transcatheter Occlusion device, the WATCHMAN(R) device, and AMPLATZER(R) septal occluder and cardiac plug have been employed, with encouraging results. Occlusion of the LAA may be an alternative to vitamin K antagonist therapy for selected patients.
All Author(s) ListYan BP, Kiernan TJ, Gonzales-Cruz I, Lam YY
Journal nameExpert Review of Medical Devices
Volume Number6
Issue Number6
Pages611 - 620
LanguagesEnglish-United Kingdom
Keywordsatrial fibrillation; left atrial appendage; oral anticoagulation; stroke
Web of Science Subject CategoriesEngineering; Engineering, Biomedical; ENGINEERING, BIOMEDICAL

Last updated on 2020-25-09 at 13:06