Left atrial appendage closure devices

Left atrial appendage closure devices Anticoagulation for prevention of stroke is a well established modality of treatment in atrial fibrillation. But a significant number of them have bleeding complications. Hence the option of left atrial appendage closure with multiple types of devices have been developed. Left atrial appendage with its sluggish flow is the most common location for thrombus formation in atrial fibrillation. Following devices have been used with varying success: Watchman Amplatzer Cardiac Plug/Amulet Lariat suture ligation Atriclip PROTECT-AF (Watchman Left Atrial Appendage System for Embolic Protection in Patients With Atrial Fibrillation) [1] randomized patients with non valvular AF if they had at least one of stroke or transient ischaemic attack, congestive heart failure, diabetes, hypertension, or age 75 years or more. This was a randomized, multicentre non inferiority trial. Warfarin was eventually discontinued in the intervention group while it was continued with target INR 2 – 3 in the control group. Initial results showed non inferiority, with higher primary safety events in the intervention group. 2.3 year follow up data was reported later [2] was also similar. Warfarin was continued for about 45 days after device implantation followed by clopidogrel for 4.5 months and lifelong aspirin. Amplatzer Cardiac Plug/Amulet real-world registry included 1,088 patients [3]. Of these patients with non valvular atrial fibrillation 82.8% had an absolute...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: Cardiology Source Type: blogs

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Atrial fibrillation is the most common sustained cardiac arrhythmia in the general population. In western countries with aging populations, atrial fibrillation poses a significant health concern, as it is associated with a high risk of thromboembolism, stroke, congestive heart failure, and myocardial infarction. Thrombi are generated in the left atrial appendage, and subsequent embolism into the cerebral circulation is a major cause of ischemic stroke. Therefore, patients have a lifetime risk of stroke, and those at high risk, defined as a CHA2DS2-VASc2 (congestive heart failure, hypertension, age>75 years, diabetes mel...
Source: Cardiology in Review - Category: Cardiology Tags: Review Articles Source Type: research
Int J Angiol DOI: 10.1055/s-0040-1708477Atrial fibrillation (AF), the most prevalent arrhythmic disease, tends to foster thrombus formation due to hemodynamic disturbances, leading to severe disabling and even fatal thromboembolic diseases. Meanwhile, patients with AF may also present with acute coronary syndrome (ACS) and coronary artery disease (CAD) requiring stenting, which creates a clinical dilemma considering that majority of such patients will likely receive oral anticoagulants (OACs) for stroke prevention and require additional double antiplatelet treatment (DAPT) to reduce recurrent cardiac events and in-stent th...
Source: International Journal of Angiology - Category: Cardiology Authors: Tags: Invited Papers Source Type: research
The CHA2DS2-VASc score estimates the risk of stroke in patients with atrial fibrillation.1,2 The CHA2DS2-VASc score accounts for congestive heart failure; hypertension; age of at least 75  years (doubled); diabetes mellitus; previous stroke, transient ischemic attack or thromboembolism (doubled); vascular disease; age 65 to 74 years; and sex category (female). Should the CHA2DS2-VASc score be considered as a categorical or a continuous factor, if the patients have an incremental in crease in risk of death, stroke, or bleeding?
Source: The Journal of Thoracic and Cardiovascular Surgery - Category: Cardiovascular & Thoracic Surgery Authors: Tags: Editorial Commentary Source Type: research
Semin Thromb Hemost DOI: 10.1055/s-0037-1615261This is an observational study to investigate the efficacy and safety of nonvitamin K antagonist oral anticoagulants (NOACs) in atrial fibrillation (AF) patients with bioprosthetic valves or prior surgical valve repair in clinical practice. A total of 122 patients (mean age: 74.1 ± 13.2; 54 females) with bioprosthetic heart valve or surgical valve repair and AF treated with NOACs were included in the analysis. The mean CHA2DS2-VASc (Congestive heart failure, Hypertension, Age>75 years, Diabetes mellitus, prior Stroke or transient ischemic attack, Vascul...
Source: Seminars in Thrombosis and Hemostasis - Category: Hematology Authors: Tags: Original Article Source Type: research
ConclusionObjective calculation of both the benefit and risks of anticoagulation in the post‐operative patient is significantly altered by including the effect on patient's quality of life utility value. Therapeutic anticoagulation in some common situations is probable to be of more detriment than benefit when considering health utility.
Source: ANZ Journal of Surgery - Category: Surgery Authors: Tags: Original Article Source Type: research
Conclusions In contemporary clinical practice, up to three-fourths of patients with new-onset AF are now initially treated with a NOAC for stroke prevention. Those selected for NOAC treatment had lower stroke and bleeding risk profiles, were more likely treated by cardiologists, and had higher socioeconomic status. Trial registration clinicaltrials.gov Identifier: NCT01701817
Source: American Heart Journal - Category: Cardiology Source Type: research
Conclusion Higher CHA2DS2-VASc scores are associated with increased incidence of major bleeding in nonvalvular atrial fibrillation patients receiving rivaroxaban.
Source: Annals of Emergency Medicine - Category: Emergency Medicine Source Type: research
ObjectivesTo compare the clinical characteristics of and use of oral anticoagulant (OAC) therapy in individuals aged 80 and older with atrial fibrillation (AF) with those of individuals younger than 80 with AF in clinical practice. DesignObservational study. SettingThe ReAl‐life Multicenter Survey Evaluating Stroke prevention strategies in Turkey trial (NCT02344901), a national observational registry. ParticipantsTurkish adults with nonvalvular AF (NVAF). MeasurementsAge data were collected at the time of entry into the registry and the octogenarian subgroup included all patients aged ≥ 80 years. We compared backgroun...
Source: Journal of the American Geriatrics Society - Category: Geriatrics Authors: Tags: Clinical Investigation Source Type: research
Abstract PURPOSE: The purpose of this study is to report on the effect of using CHA2DS2VASc (congestive heart failure, hypertension, age ≥75 years [doubled], type 1 or type 2 diabetes mellitus, stroke or transient ischemic attack or thromboembolism [doubled], vascular disease [prior myocardial infarction, peripheral artery disease, or aortic plaque], age 65-75 years, sex category [female]) rather than CHADS2 (congestive heart failure, hypertension, age ≥75 years, diabetes mellitus, and prior stroke) to determine candidacy for anticoagulant prophylaxis in insured patients with atrial fibrillation (AF). M...
Source: Clinical Therapeutics - Category: Drugs & Pharmacology Authors: Tags: Clin Ther Source Type: research
Background and Purpose— Patients with atrial fibrillation and previous ischemic stroke (IS)/transient ischemic attack (TIA) are at high risk of recurrent cerebrovascular events despite anticoagulation. In this prespecified subgroup analysis, we compared warfarin with edoxaban in patients with versus without previous IS/TIA. Methods— ENGAGE AF-TIMI 48 (Effective Anticoagulation With Factor Xa Next Generation in Atrial Fibrillation-Thrombolysis in Myocardial Infarction 48) was a double-blind trial of 21 105 patients with atrial fibrillation randomized to warfarin (international normalized ratio, 2.0–3.0; m...
Source: Stroke - Category: Neurology Authors: Tags: Atrial Fibrillation, Anticoagulants, Ischemic Stroke Clinical Sciences Source Type: research
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