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Atrial fibrillation anticoagulant

Giulia Renda, Fabrizio Ricci, Raffaele De Caterina
BACKGROUND: Non-vitamin K oral anticoagulants (NOACs) are now proven alternatives to vitamin K antagonists (VKAs) for stroke prevention in atrial fibrillation (AF). However, there are few data on the efficacy and safety of their use around cardioversion, where the risk of thromboembolic events is heightened. METHODS: We performed a random-effects meta-analysis of patients undergoing both electrical and pharmacological cardioversion for AF in the RE-LY, ROCKET-AF, ARISTOTLE, ENGAGE AF-TIMI 48, X-VeRT and ENSURE-AF trials...
October 14, 2016: American Journal of Medicine
Peter Appelros, Maria Háls Berglund, Jakob O Ström
BACKGROUND: In the absence of active management, the stroke risk after a transient ischemic attack (TIA) may be high. Almost 10 years ago, the results of the EXPRESS and SOS-TIA studies called for a more rapid management of TIA patients. The purpose of this study was to investigate the other stroke risks in the longer term, after the implementation of a more active approach to TIA. We also wanted to assess the predictive value of the ABCD2 score in this context. METHODS: Riksstroke is the national stroke registry in Sweden...
October 18, 2016: Cerebrovascular Diseases
Özcan Başaran, Volkan Dogan, Osman Beton, Mehmet Tekinalp, Ahmet Cağri Aykan, Ezgi Kalaycioğlu, Ismail Bolat, Onur Taşar, Özgen Şafak, Macit Kalcik, Mehmet Yaman, Sinan İnci, Bernas Altintaş, Sedat Kalkan, Cevat Kirma, Murat Biteker
This study aimed to investigate the potential misuse of novel oral anticoagulants (NOACs) and the physicians' adherence to current European guideline recommendations in real-world using a large dataset from Real-life Multicenter Survey Evaluating Stroke Prevention Strategies in Turkey (RAMSES Study).RAMSES study is a prospective, multicenter, nationwide registry ( identifier NCT02344901). In this subgroup analysis of RAMSES study, patients who were on NOACs were classified as appropriately treated (AT), undertreated (UT), and overtreated (OT) according to the European Society of Cardiology (ESC) guidelines...
August 2016: Medicine (Baltimore)
Yu-Yang Chen, Qi Liu, Li Liu, Xiao-Rong Shu, Zi-Zhuo Su, Hai-Feng Zhang, Ru-Qiong Nie, Jing-Feng Wang, Shuang-Lun Xie
BACKGROUND: Metabolic syndrome (MS) is a risk factor for stroke and thromboembolism event. Left atrial or LA appendage (LA/LAA) thrombus is a surrogate of potential stroke. The relationship between MS and atrial thrombus remains unclear. In this study, we sought to investigate the effect of MS on risk stratification of LA/LAA thrombus formation in patients with nonvalvular atrial fibrillation (NVAF). METHODS: This cross-sectional study enrolled 294 consecutive NVAF patients without prior anticoagulant and lipid-lowering therapies...
2016: Chinese Medical Journal
Eric Paulus, Kathy Komperda, Gabriel Park, Julie Fusco
Factor VII (FVII) deficiency is the most prevalent rare bleeding disorder in the USA and affects approximately 1 out of every 500,000 people. Warfarin inhibits the synthesis of FVII, in addition to other clotting factors. Warfarin is contraindicated in patients with bleeding tendencies or blood dyscrasias; therefore, the literature regarding the use of warfarin in FVII deficiency is very limited. We report a successful re-challenge of warfarin therapy in a patient with FVII deficiency. A 70-year-old woman with FVII deficiency experienced a significant decrease in FVII activity and subsequent vaginal bleeding roughly 5 weeks after starting warfarin for atrial fibrillation...
December 2016: Drug Saf Case Rep
Michał Mazurek, Menno V Huisman, Gregory Y H Lip
BACKGROUND: Recent improvements in atrial fibrillation diagnosis and management have prompted the initiation of various registries, predominantly to assess adherence to new guidelines, but also to address the pending questions of safety and effectiveness of newly introduced management options in 'real world' clinical practice settings. In this review we appraise antithrombotic treatment patterns for stroke prevention in atrial fibrillation registries. METHODS AND RESULTS: We searched PubMed, Science Direct and the Cochrane databases for registries focusing on stroke thromboprophylaxis in atrial fibrillation...
October 13, 2016: American Journal of Medicine
Xavier Freixa, Laura Llull, Sameer Gafoor, Ignacio Cruz-Gonzalez, Samera Shakir, Heyder Omran, Sergio Berti, Gennaro Santoro, Joelle Kefer, Ulf Landmesser, Jens Erik Nielsen-Kudsk, Prapa Kanagaratnam, Fabian Nietlispach, Steffen Gloekler, Adel Aminian, Paolo Danna, Marco Rezzaghi, Friederike Stock, Miroslava Stolcova, Luis Paiva, Marco Costa, Xavier Millán, Reda Ibrahim, Tobias Tichelbäcker, Wolfgang Schillinger, Jai-Wun Park, Horst Sievert, Bernhard Meier, Apostolos Tzikas
Cardioembolic strokes are generally more lethal and disabling than other source of strokes. Data from PROTECT AF (Watchman Left Atrial Appendage Closure Technology for Embolic Protection in Patients With Atrial Fibrillation) suggest that strokes after left atrial appendage occlusion (LAAO) with the Watchman device are less disabling than those in the warfarin group. No data assessing the severity of strokes after LAAO with the AMPLATZER Cardiac Plug (ACP) are available. The objective of the study was to evaluate the severity of cerebrovascular events after LAAO with the ACP in a population mostly characterized by an absolute or relative contraindication to oral anticoagulation...
September 15, 2016: American Journal of Cardiology
Simardeep Gill, Min Jun, Pietro Ravani
The prevalence of atrial fibrillation and the risk of stroke display an age-related increase in the chronic kidney disease (CKD) population. Evidence from large randomized controlled trials conducted in the general population supports the use of anticoagulation to reduce the risk of stroke in the setting of non-valvular atrial fibrillation. However, data in the non-dialysis-dependent and dialysis-dependent CKD populations are limited largely to observational studies, which demonstrate conflicting results regarding the risk-benefit profile of anticoagulation...
October 14, 2016: Nephrology, Dialysis, Transplantation
Laila Staerk, Emil Loldrup Fosbøl, Gregory Y H Lip, Morten Lamberts, Anders Nissen Bonde, Christian Torp-Pedersen, Brice Ozenne, Thomas Alexander Gerds, Gunnar Hilmar Gislason, Jonas Bjerring Olesen
BACKGROUND: Non-vitamin K antagonist (VKA) oral anticoagulants (NOACs) are widely used as stroke prophylaxis in non-valvular atrial fibrillation (AF), but comparative data are sparse. PURPOSE: To compare dabigatran, rivaroxaban, and apixaban vs. VKA and the risk of stroke/thromboembolism (TE) and intracranial bleeding in AF. METHODS: Using Danish nationwide registries (2011-15), anticoagulant-naïve AF patients were identified when initiating VKA or an NOAC...
October 14, 2016: European Heart Journal
Karen Tu, Robby Nieuwlaat, Stephanie Y Cheng, Laura Wing, Noah Ivers, Clare L Atzema, Jeff S Healey, Paul Dorian
BACKGROUND: Identifying patients with atrial fibrillation (AF) using administrative data is important for epidemiologic and outcomes research. Although administrative data cover large populations, it is necessary to assess their validity in identifying AF patients. METHODS: We used Ontario family physician electronic medical records from the Electronic Medical Record Administrative data Linked Database (EMRALD) as a reference standard to assess the accuracy of administrative data algorithms in identifying patients with AF...
June 23, 2016: Canadian Journal of Cardiology
Ryan Hakimi, Ankur Garg
PURPOSE OF REVIEW: Hemorrhagic stroke comprises approximately 15% to 20% of all strokes. This article provides readers with an understanding of the indications and significance of various neuroimaging techniques available for patients presenting with hemorrhagic strokes of distinct causes. RECENT FINDINGS: The most common initial neuroimaging study is a noncontrast head CT, which allows for the identification of hemorrhage. Once an intracranial hemorrhage has been identified, the pattern of blood and the patient's medical history, neurologic examination, and laboratory studies lead the practitioner to pursue further neuroimaging studies to guide the medical, surgical, and interventional management...
October 2016: Continuum: Lifelong Learning in Neurology
Mário Augusto Cray da Costa, Lucas Kraeski Krum, Juliana da Silva Geraldino, Marcelo Derbli Schafranski, Ricardo Zanetti Gomes, Elise Souza Dos Santos Reis
Introduction: In patients with mechanical prosthetic heart valves or atrial fibrillation requiring anticoagulation to prevent thromboembolic events, several factors influence adherence and anticoagulation complications. Objective: To evaluate the factors that interfere with the quality and complications of anticoagulation with vitamin K antagonists. Methods: A retrospective cohort study of 100 patients, in the period from 2011 to 2014, was performed...
May 2016: Brazilian Journal of Cardiovascular Surgery
Giuseppe Andò, Olimpia Trio
No abstract text is available yet for this article.
October 1, 2016: International Journal of Cardiology
Christian Pfluecke, Lina Plichta, Daniel Tarnowski, Mathias Forkmann, Stefan Ulbrich, Silvio Quick, Felix M Heidrich, Stephan Wiedemann, Marian Christoph, David M Poitz, Carsten Wunderlich, Ruth H Strasser, Karim Ibrahim
Atrial fibrillation (AF) is known to cause platelet activation. AF and its degree of thrombogenesis could be associated with monocyte-platelet aggregates (MPAs). We investigated on whether the content of MPAs or other platelet activation markers is associated with the recurrence of AF after pulmonary vein isolation (PVI). A total of 73 patients with symptomatic AF underwent PVI. After 6 months, all patients were evaluated for episodes of AF recurrence. At the same time, flow-cytometric quantification analyses were performed to determine the content of MPAs...
October 13, 2016: Platelets
Jamshed J Dalal, Anil Dhall, Abhay Bhave
Oral vitamin K antagonists (VKA) such as warfarin have been the mainstay of therapy for stroke prevention in patients with non valvular atrial fibrillation (NVAF) while low-molecular-weight heparin, fondaparinux and adjusted-dose warfarin or aspirin have been routinely used for thromboembolism (VTE) prophylaxis in patients undergoing total hip or knee replacement. However, VKAs are associated with considerable limitations, including increased risk of bleeding and narrow therapeutic window. Novel oral anticoagulants (NOACs, now referred as Non Vit K dependent oral anticoagulants), including the direct thrombin inhibitor dabigatran and direct Factor Xa inhibitors such as rivaroxaban and apixaban are now approved alternatives to warfarin for prophylaxis of stroke and systemic embolic events (SEE) in patients with NVAF and treatment and prophylaxis of VTE...
April 2016: Journal of the Association of Physicians of India
Kwon Jae Park, Jong Soo Woo, Jong Yoon Park, Jae Hwa Jung
BACKGROUND: Mitral stenosis (MS) remains one of the important heart diseases. There are many factors that influence the clinical outcomes, and little is known about how left ventricular (LV) dysfunction clinically affects the prognosis of the patient with MS after mitral valve replacement (MVR). We reviewed our clinical experiences of MVR in patients with MS who had LV dysfunction. METHODS: Between January 1991 and January 2013, 110 patients with MS who underwent MVR were analyzed and divided into two groups according to ejection fraction (EF)...
October 2016: Korean Journal of Thoracic and Cardiovascular Surgery
Vivencio Barrios, Jaime Masjuan
The majority of patients with atrial fibrillation should receive oral anticoagulation to reduce the risk of stroke. The limitations of vitamin K antagonists have led to an underuse of anticoagulants in clinical practice which has been associated with a higher risk of stroke, hospitalizations and healthcare costs. Direct oral anticoagulants (DOACs) overcome some of the limitations of vitamin K antagonists and may therefore increase the use of oral anticoagulants in clinical practice. Since no head-to-head trials have been performed, only indirect comparisons can be made among them...
October 12, 2016: Future Cardiology
Abhijit Trailokya, J S Hiremath, Jps Sawhney, Y K Mishra, Vivek Kanhere, R Srinivasa, Mangesh Tiwaskar
Anticoagulant treatment is required for the treatment and prevention of thromboembolic disorders. Vitamin K antagonists are commonly used oral anticoagulants worldwide. Acenocoumarol is mono-coumarin derivative with racemic mixture of R (+) and S (-) enantiomers. Efficacy and safety of acenocoumarol has been evaluated in atrial fibrillation, cardiac valve replacement, after myocardial infarction, treatment of deep vein thrombosis, after major surgeries and after critical illness requiring prolonged hospitalization...
February 2016: Journal of the Association of Physicians of India
Joris Komen, Tomas Forslund, Paul Hjemdahl, Morten Andersen, Björn Wettermark
AIMS: To assess the effect of policy interventions, i.e. reimbursement decisions, guidelines, and regional recommendations, on the prescribing of oral anticoagulant treatment in patients with atrial fibrillation (AF). METHODS: Interrupted time series analyses using monthly data on all patients with a recorded diagnosis of AF newly initiated (both switchers and anticoagulant naïve patients) on either warfarin, dabigatran, rivaroxaban or apixaban in the Stockholm region from April 2011 until February 2016...
October 11, 2016: British Journal of Clinical Pharmacology
Giosuè Mascioli, Elena Lucca, Federica Michelotti, Giusy Alioto, Franco Santoro, Guido Belli, Cristina Rota, Ombretta Ornago, Giovanni Sirianni, Emanuela Pulcini, Matteo Pennesi, Carlo Savasta, Rosario Russo, Antonino Pitì
BACKGROUND: Patients with atrial fibrillation (AF) have an increased thromboembolic risk, that can be estimated with risk scores an require sometimes oral anticoagulation therapy (OAT). Despite correct anticoagulation, some patients still develop left atrial spontaneous echo contrast (SEC) or thrombosis. The value of traditional risk scores (R2 CHADS2 , CHADS2 and CHA2 DS2 -VASc) in predicting such events remains controversial MATERIAL AND RESULTS: Aim of our study was to explore variables linked to severe SEC or atrial thrombosis and evaluate the performance of traditional risk scores in identifying these patients...
October 12, 2016: Pacing and Clinical Electrophysiology: PACE
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