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Latest & greatest articles for warfarin
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Non-major bleeding with apixaban versus warfarin in patients with atrial fibrillation We describe the incidence, location and management of non-major bleeding, and assess the association between non-major bleeding and clinical outcomes in patients with atrial fibrillation (AF) receiving anticoagulation therapy enrolled in Apixaban for Reduction in Stroke and other Thromboembolic Events in Atrial Fibrillation (ARISTOTLE).We included patients who received ≥1 dose of study drug (n=18 140). Non (...) -major bleeding was defined as the first bleeding event considered to be clinically relevant non-major (CRNM) or minor bleeding, and not preceded by a major bleeding event.Non-major bleeding was three times more common than major bleeding (12.1% vs 3.8%). Like major bleeding, non-major bleeding was less frequent with apixaban (6.4 per 100 patient-years) than warfarin (9.4 per 100 patient-years) (adjusted HR 0.69, 95% CI 0.63 to 0.75). The most frequent sites of non-major bleeding were haematuria
Warfarin treatment quality and prognosis in patients with mechanical heart valve prosthesis To study the impact of time in therapeutic range (TTR) and international normalised ratio (INR) variability on the risk of thromboembolic events, major bleeding complications and death after mechanical heart valve (MHV) implantation. Additionally, the importance of different target INR levels was elucidated.A retrospective, non-randomised multicentre cohort study including all patients with mechanical (...) heart valve (MVH) prosthesis registered in the Swedish National Quality Registry Auricula from 2006 to 2011. Data were merged with the Swedish National Patient Registry, SWEDEHEART and Cause of Death Registry.In total 4687 ordination periods, corresponding to 18 022 patient-years on warfarin, were included. High INR variability (above mean ≥0.40) or lower TTR (≤70%) was associated with a higher risk of bleeding (rate per 100 years 4.33 (95% CI 3.87 to 4.82) vs 2.08 (1.78 to 2.41); HR 2.15 (1.75
Net clinical benefit of warfarin in individuals with atrial fibrillation across stroke risk and across primary and secondary care To investigate net clinical benefit (NCB) of warfarin in individuals with atrial fibrillation (AF) across stroke risk and across primary and secondary care.We conducted a linked electronic health record cohort study of 70 206 individuals with initial record of diagnosis of AF in primary (n=29 568) or secondary care (n=40 638) in England (1998-2010). We defined stroke (...) risk according to the CHA2DS2-VASc score, and followed individuals over a median 2.2 years for 7005 ischaemic strokes (IS) and for 906 haemorrhagic strokes (HS). We calculated incidence rates (IRs) and 95% CIs per 100 person-years (PYs) (IR (95% CI)/100 PY) of IS and HS, with and without use of warfarin, and the NCB (ie, number of IS avoided) per 100 PYs of warfarin use (NCB (95% CI)/100 PY).Compared with individuals with initial record of diagnosis in secondary care, those in primary care had
Treatment of acute pulmonary embolism with dabigatran versus warfarin. A pooled analysis of data from RE-COVER and RE-COVER II Dabigatran was non-inferior to warfarin for prevention of recurrent venous thromboembolism (VTE), and dabigatran had a lower rate of bleeding compared with warfarin in two large-scale randomised trials, RE-COVER and RE-COVER II. In this study, we investigate the efficacy and safety of dabigatran versus warfarin according to the index event that qualified the patient (...) for enrollment, either symptomatic pulmonary embolism (PE) with or without deep-vein thrombosis (DVT), or DVT alone. We then analyse the anticoagulant effect of dabigatran vs warfarin on patients enrolled with PE. The pooled dataset for the efficacy analysis consisted of 2553 and 2554 patients who were randomised to dabigatran and warfarin, respectively. Recurrent VTE/VTE-related death during the study period and additional 30-day follow-up occurred in 2.7 % of all patients on dabigatran and in 2.4
Major bleeding risk among non-valvular atrial fibrillation patients initiated on apixaban, dabigatran, rivaroxaban or warfarin: a "real-world" observational study in the United States Limited data are available about the real-world safety of non-vitamin K antagonist oral anticoagulants (NOACs).To compare the major bleeding risk among newly anticoagulated non-valvular atrial fibrillation (NVAF) patients initiating apixaban, warfarin, dabigatran or rivaroxaban in the United States.A retrospective (...) cohort study was conducted to compare the major bleeding risk among newly anticoagulated NVAF patients initiating warfarin, apixaban, dabigatran or rivaroxaban. The study used the Truven MarketScan(®) Commercial & Medicare supplemental US database from 1 January 2013 through 31 December 2013. Major bleeding was defined as bleeding requiring hospitalisation. Cox model estimated hazard ratios (HRs) of major bleeding were adjusted for age, gender, baseline comorbidities and co-medications. Among 29 338
Edoxaban versus enoxaparin-warfarin in patients undergoing cardioversion of atrial fibrillation (ENSURE-AF): a randomised, open-label, phase 3b trial. Edoxaban, an oral factor Xa inhibitor, is non-inferior for prevention of stroke and systemic embolism in patients with atrial fibrillation and is associated with less bleeding than well controlled warfarin therapy. Few safety data about edoxaban in patients undergoing electrical cardioversion are available.We did a multicentre, prospective (...) , randomised, open-label, blinded-endpoint evaluation trial in 19 countries with 239 sites comparing edoxaban 60 mg per day with enoxaparin-warfarin in patients undergoing electrical cardioversion of non-valvular atrial fibrillation. The dose of edoxaban was reduced to 30 mg per day if one or more factors (creatinine clearance 15-50 mL/min, low bodyweight [≤60 kg], or concomitant use of P-glycoprotein inhibitors) were present. Block randomisation (block size four)-stratified by cardioversion approach
2016LancetControlled trial quality: predicted high
The effect of low-dose oral vitamin K supplementation on INR stability in patients receiving warfarin. A randomised trial The anticoagulant effect of warfarin is influenced by variations in vitamin K intake. Concomitant use of daily low-dose oral vitamin K (LDVK) and warfarin may improve INR stability. We hypothesise that administration of LDVK improves INR control. To test this hypothesis we performed a multi-centre, placebo-controlled, randomised trial conducted at four university-affiliated (...) hospitals in Canada. Patients on chronic warfarin therapy received oral vitamin K 150 mcg daily or a matching placebo for a total of six months after a one-month run in period. The primary outcome was a comparison of mean time in therapeutic range (TTR) in LDVK and placebo group during a six-month-period. The secondary outcome was number of INR excursions <1.5 or >4.5. There was no significant difference in the final TTR between the two groups (65.1 % vs 66 %, p =0.8). Mean TTR in both LDVK and placebo
Point-of-Care Warfarin Monitoring in the ROCKET AF Trial. 27433844 2016 08 02 2018 12 02 1533-4406 375 4 2016 07 28 The New England journal of medicine N. Engl. J. Med. Point-of-Care Warfarin Monitoring in the ROCKET AF Trial. 390-1 10.1056/NEJMc1604020 Patel Manesh R MR Hellkamp Anne S AS Fox Keith A A KA ROCKET AF Executive Committee, Steering Committee, and Investigators eng Journal Article Comment 2016 07 06 United States N Engl J Med 0255562 0028-4793 0 Anticoagulants 0 Morpholines 0 (...) Thiophenes 5Q7ZVV76EI Warfarin AIM IM N Engl J Med. 2016 Feb 25;374(8):785-8 26839968 N Engl J Med. 2016 Jul 28;375(4):390 27433845 Anticoagulants therapeutic use Atrial Fibrillation drug therapy Female Humans Male Morpholines therapeutic use Thiophenes therapeutic use Warfarin therapeutic use 2016 7 20 6 0 2016 7 20 6 0 2016 8 3 6 0 ppublish 27433844 10.1056/NEJMc1604020 10.1056/NEJMc1604020#SA2
Efficacy and Safety of Apixaban Compared With Warfarin in Patients With Atrial Fibrillation in Relation to Renal Function Over Time: Insights From the ARISTOTLE Randomized Clinical Trial. Renal impairment confers an increased risk of stroke, bleeding, and death in patients with atrial fibrillation. Little is known about the efficacy and safety of apixaban in relation to renal function changes over time.To evaluate changes of renal function over time and their interactions with outcomes during (...) a median of 1.8 years of follow-up in patients with atrial fibrillation randomized to apixaban vs warfarin treatment.The prospective, randomized, double-blind Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation (ARISTOTLE) clinical trial randomized 18 201 patients with atrial fibrillation to apixaban or warfarin. Serial creatinine measurements were available in 16 869 patients. Worsening of renal function was defined as an annual decrease in estimated glomerular
Comparative effectiveness and safety of non-vitamin K antagonist oral anticoagulants and warfarin in patients with atrial fibrillation: propensity weighted nationwide cohort study. To study the effectiveness and safety of the non-vitamin K antagonist oral anticoagulants (novel oral anticoagulants, NOACs) dabigatran, rivaroxaban, and apixaban compared with warfarin in anticoagulant naïve patients with atrial fibrillation. Observational nationwide cohort study. Three Danish nationwide databases (...) , August 2011 to October 2015. 61 678 patients with non-valvular atrial fibrillation who were naïve to oral anticoagulants and had no previous indication for valvular atrial fibrillation or venous thromboembolism. The study population was distributed according to treatment type: warfarin (n=35 436, 57%), dabigatran 150 mg (n=12 701, 21%), rivaroxaban 20 mg (n=7192, 12%), and apixaban 5 mg (n=6349, 10%). Effectiveness outcomes defined a priori were ischaemic stroke; a composite of ischaemic stroke
Incidence and Determinants of Traumatic Intracranial Bleeding Among Older Veterans Receiving Warfarin for Atrial Fibrillation Traumatic intracranial bleeding, which is most commonly attributable to falls, is a common concern among health care professionals, who are hesitant to prescribe oral anticoagulants to older adults with atrial fibrillation.To describe the incidence of and risk factors for traumatic intracranial bleeding in a large cohort of older adults who were newly prescribed warfarin (...) sodium.Retrospective cohort study at the US Department of Veterans Affairs (VA). Participants included 31 951 veterans with atrial fibrillation 75 years or older who were new referrals to VA anticoagulation clinics (for warfarin therapy) between January 1, 2002, and December 31, 2012. The dates of the core analysis were March 2014 through May 2015, and subsequent ad hoc analyses were performed through December 2015. Patients with comorbid conditions requiring warfarin were excluded.The primary outcome
Warfarin initiation nomograms for venous thromboembolism. Venous thromboembolism (VTE) is a common condition in hospital patients. Considerable controversy is ongoing regarding optimal initial warfarin dosing for patients with acute deep venous thrombosis (DVT) and pulmonary embolism (PE). Achieving a therapeutic international normalized ratio (INR) with warfarin as soon as possible is important because this minimizes the duration of parenteral medication necessary to attain immediate (...) anticoagulation, and it potentially decreases the cost and inconvenience of treatment. Although a 5-mg loading-dose nomogram tends to prevent excessive anticoagulation, a 10-mg loading-dose nomogram may achieve a therapeutic INR more quickly. This is an update of a review first published in 2013.To evaluate the efficacy of a 10-mg warfarin nomogram compared with a 5-mg warfarin nomogram among patients with VTE.For this update the Cochrane Vascular Trials Search Co-ordinator searched the Specialised Register
of these genes have also been associated with dose of other coumarin anticoagulants, the recommendations belowarespeci?cto warfarin. DRUG:WARFARIN Warfarin (Coumadin and others) is the most commonly used oral anticoagulant worldwide, with annual prescriptions in the 1 Department of Pharmacotherapy and Translational Research, College of Pharmacy, and Center for Pharmacogenomics, University of Florida, Gainesville, Florida, USA; 2 Department of Pharmaceutical Sciences, St. Jude Children’s Research Hospital (...) Clinical Pharmacogenetics Implementation Consortium (CPIC) Guidelines for Pharmacogenetics-guided Warfarin Dosing Clinical Pharmacogenetics Implementation Consortium (CPIC) Guideline for Pharmacogenetics-Guided Warfarin Dosing: 2017 Update JAJohnson 1 , KECaudle 2 , LGong 3 ,M Whirl-Carrillo 3 , CMStein 4 , SAScott 5 , MTLee 6 , BFGage 7 , SEKimmel 8,9 , MAPerera 10 , JLAnderson 11 , MPirmohamed 12 , TEKlein 3 , NALimdi 13 , LHCavallari 1 and MWadelius 14 This document is an update to the 2011
Is long-term Rivaroxaban superior to Warfarin in pulmonary embolism at 6 months? BestBets: Is long-term Rivaroxaban superior to Warfarin in pulmonary embolism at 6 months? Is long-term Rivaroxaban superior to Warfarin in pulmonary embolism at 6 months? Report By: Chris Morgan - Medical Student Y5 Search checked by Rick Body - Consultant in Emergency Medicine Institution: University of Manchester, Manchester, UK Original institution: Manchester Royal Infirmary Date Submitted: 21st October 2015 (...) Date Completed: 21st October 2015 Last Modified: 21st October 2015 Status: Green (complete) Three Part Question In [patients with proven pulmonary embolism (PE)] is [Rivaroxaban better than warfarin] at [reducing mortality and recurrence of venous thromboembolism at 6 months]? Clinical Scenario A 52-year-old lady has presented to the Emergency Department with a suspected PE. This is confirmed by CT pulmonary angiography (CTPA). Consequently she requires anticoagulation. Hospital guidelines suggest
). • Coumadin, www.coumadin.com, for patient information. • HealthLink BC, www.healthlinkbc.ca, for more information on warfarin and vitamin K. ? Appendices • Appendix A: Important Interactions with Warfarin ? Associated Documents The following documents accompany this guideline: • BCGuidelines.ca – Warfarin Therapy – Management During Invasive Procedures and Surgery • BCGuidelines.ca – Stroke and Transient Ischemic Attack – Acute and Long-Term Management • BCGuidelines.ca – Atrial Fibrillation – Diagnosis (...) Warfarin Therapy Management Guidelines & Protocols Advisory Committee Warfarin Therapy Management Effective Date: April 1, 2015 Scope This guideline provides recommendations for the long-term management of warfarin therapy in patients aged =19 years in the primary care setting. The guideline describes: 1) warfarin initiation, 2) international normalized ratio (INR) monitoring with optimal ranges, and 3) warfarin dosage adjustment. This guideline assumes the physician has reviewed
Warfarin Therapy - Management During Invasive Procedures and Surgery Guidelines & Protocols Advisory Committee Warfarin Therapy – Management During Invasive Procedures and Surgery Effective Date: April 1, 2015 Scope This guideline provides recommendations for the management of warfarin therapy in adults aged = 19 years requiring invasive procedures and surgery. Perioperative management of non-vitamin K antagonist oral anticoagulants can be found in BCGuidelines.ca – Use of NOACs in Non-Valvular (...) Atrial Fibrillation. Non-perioperative management of warfarin is covered in BCGuidelines.ca – Warfarin Therapy Management. Key Recommendations • Warfarin discontinuation prior to invasive procedures is necessary for all interventional procedures except for minor skin procedures, routine dental work, cataract surgery, endoscopies without biopsy, and percutaneous venous access. • For elective procedures, warfarin should be stopped for 5 to 6 days prior to the procedure to allow gradual normalization
Report in Brief - Optimal Warfarin Management for Prevention of Thromboembolic Events in Patients with Atrial Fibrillation Warfarin Management for Thromboembolic Events in Atrial Fibrillation | CADTH.ca Find the information you need Warfarin Management for Thromboembolic Events in Atrial Fibrillation Warfarin Management for Thromboembolic Events in Atrial Fibrillation Published on: August 15, 2011 Project Number: OP0508 Product Line: Result type: Report Warfarin has been the mainstay of oral (...) anticoagulant therapy for more than 60 years. The effectiveness of warfarin for the prevention of stroke in patients with atrial fibrillation is well established. In Canada, an estimated 200,000 to 250,000 people have this condition. Need for Recommendations Managing warfarin therapy is challenging because warfarin interacts with many foods and other drugs. Each patient needs an individualized warfarin dose, which takes time to determine and requires patients to go in for frequent laboratory testing