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Atrial fibrillation (AF) is progressively common, and increases the risk of stroke five-fold. Oral anticoagulation is the mainstay therapy; however, it increases the risk of bleeding. Moreover, 30% with AF and at risk of stroke are not in relevant anticoagulation. The randomized PROTECT-AF trial has demonstrated the superiority of left atrial appendage occlusion (LAAO) as compared to warfarin for prevention of the combined endpoint of stroke, major bleeding and cardiovascular mortality. However, studies comparing LAAO to therapy with novel oral anticoagulants (NOAC) have not been carried out.
This study aims to assess the effect of left atrial appendage occlusion (LAAO) to reduce the incidence of stroke, systemic embolism, major bleeding and all-cause mortality in patients with atrial fibrillation (AF) and a prior ischemic stroke or transient ischemic attack (TIA).
An investigator-initiated multicenter, randomized open-label non-inferiority trial with blinded outcome evaluation (PROBE design). The active comparison LAAO is tested against NOAC therapy in a 1:1 stratified randomization. Patients should have AF, and an ischemic stroke or TIA within 6 months prior to enrollment. In total 750 patients will be included. Follow-up will be based on in-office and telephone follow-up during the first 3 years after randomization, along with up to 10 years long-term follow-up through the National Patient Registries.
The main study outcomes: The primary outcome is a composite of stroke (hemorrhagic or ischemic), systemic embolism, major bleeding or all-cause mortality assessed after at least two years follow-up for the last enrolled patient. Secondary outcomes will examine early and late safety outcome measures. The long-term outcome will be assessed up to 10-years after randomization through the National Patient Registries.
Left atrial appendage occlusion, NOAC
Aarhus University Hospital
Central Denmark Region
University of Aarhus
Published on BioPortfolio: 2018-08-27T22:30:16-0400
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Atrial fibrillation (AF) is the most common cardiac arrhythmia in the adult population. Thromboembolic events are one of the reson of increased mortality in this group of patients. Oral anticoagulatio...
Rapid, irregular atrial contractions caused by a block of electrical impulse conduction in the right atrium and a reentrant wave front traveling up the inter-atrial septum and down the right atrial free wall or vice versa. Unlike ATRIAL FIBRILLATION which is caused by abnormal impulse generation, typical atrial flutter is caused by abnormal impulse conduction. As in atrial fibrillation, patients with atrial flutter cannot effectively pump blood into the lower chambers of the heart (HEART VENTRICLES).
Impaired or delayed impulse conduction between the right and left HEART ATRIA. Advanced interatrial blocks are often associated with arrhythmias (e.g., ATRIAL FLUTTER; and ATRIAL FIBRILLATION), direct conduction block via the Bachmann's bundle and concomitant left atrial enlargement. Syndrome of advanced interatrial block associated with SUPRAVENTRICULAR TACHYCARDIA is referred to as Bayes syndrome.
Long-term changes in the electrophysiological parameters and/or anatomical structures of the HEART ATRIA that result from prolonged changes in atrial rate, often associated with ATRIAL FIBRILLATION or long periods of intense EXERCISE.
Ear-shaped appendage of either atrium of the heart. (Dorland, 28th ed)
The pressure within the CARDIAC ATRIUM. It can be measured directly by using a pressure catheter (see HEART CATHETERIZATION). It can be also estimated using various imaging techniques or other pressure readings such as PULMONARY CAPILLARY WEDGE PRESSURE (an estimate of left atrial pressure) and CENTRAL VENOUS PRESSURE (an estimate of right atrial pressure).
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