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https://www.readbyqxmd.com/read/28429198/managing-the-perioperative-patient-on-direct-oral-anticoagulants
#1
Jordan Leitch, Janet van Vlymen
PURPOSE: Patients are increasingly treated with direct oral anticoagulants (DOACs) for the prevention of stroke due to non-valvular atrial fibrillation and for the treatment of venous thromboembolism. When these patients present for urgent or emergent surgical procedures, they present a challenge to the anesthesiologist who must manage perioperative risk due to anticoagulation. The purpose of this module is to review the literature surrounding the perioperative management of DOACs. Timing, laboratory monitoring, and availability of reversal agents are important considerations to optimize patients being treated with DOACs who require emergent surgery...
April 20, 2017: Canadian Journal of Anaesthesia, Journal Canadien D'anesthésie
https://www.readbyqxmd.com/read/28392512/direct-oral-anticoagulants-for-the-treatment-of-venous-thromboembolism-in-japan
#2
Mashio Nakamura, Norikazu Yamada, Masaaki Ito
Direct oral anticoagulants (DOACs) were developed to compensate for the demerits of warfarin. In Japan, three factor Xa inhibitors are used for the treatment of venous thromboembolism (VTE): edoxaban, rivaroxaban, and apixaban. Despite problems, such as the inability to monitor their effect and the lack of an antidote, these inhibitors have the same efficacy as conventional treatment with warfarin, and they are associated with a significantly high degree of safety in relation to hemorrhagic complications. East Asians, including Japanese, suffer from hemorrhage more frequently; therefore, DOACs are considered to be highly effective...
April 7, 2017: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/28281227/patient-preferences-regarding-atrial-fibrillation-stroke-prophylaxis-in-patients-at-potential-risk-of-atrial-fibrillation
#3
Nicholas T Edwards, Erica D Greanya, I Fan Kuo, Peter S Loewen, Celia L Culley
Background With an increasing number of options for atrial fibrillation (AF) stroke prophylaxis, there are several medication-related factors to consider. This study aimed to gain a better understanding of which preference factors influence patient decisions when selecting AF stroke prophylaxis. Objective To determine the factors that influence patient stroke prophylaxis decisions and preferred therapeutic options. Methods A questionnaire about AF stroke prophylaxis medication options was distributed to participants at risk of AF...
March 9, 2017: International Journal of Clinical Pharmacy
https://www.readbyqxmd.com/read/28198201/clinical-implications-of-reversal-agents-for-direct-oral-anticoagulants
#4
Sarah Monagle, John W Eikelboom, Kuan H Ng, Vinai C Bhagirath
Direct oral anticoagulants (DOACs) are effective in preventing and treating venous thromboembolism, and preventing stroke in atrial fibrillation. Until recently, there has been no specific reversal agent for DOACs. Now, a specific antidote for the direct thrombin inhibitor, dabigatran has been approved for use, and antidotes for factor Xa inhibitors (rivaroxaban, apixaban and edoxaban) are being developed. We review the evidence for currently used and emerging reversal strategies, and discuss possible clinical implications, including increased prescription of DOACs, use of DOACs in clinical situations previously felt to pose too great a risk of bleeding, and use of reversal agents beyond currently approved indications...
March 2017: Future Cardiology
https://www.readbyqxmd.com/read/27911120/new-frontiers-in-anticoagulation-non-vitamin-k-oral-anticoagulants-in-stroke-prevention
#5
Valentina Arnao, Marianna Riolo, Antonino Tuttolomondo, Antonio Pinto, Brigida Fierro, Paolo Aridon
Non vitamin-K oral anticoagulants (NOACs) are direct and specific inhibitors of the coagulation factors IIa (dabigatran) and Xa (apixaban, rivaroxaban, edoxaban) which share many pharmacokinetic properties. However, indications are lacking regarding the use of NOACs during thrombolysis, surgery and bleeding events. Areas covered: In this paper, the authors retrospectively analyzed the relevant literature on the NOACs using the PubMed and Google Scholar databases. Expert commentary: Although warfarin is effective in cardioembolic stroke prevention, easier handling and more favorable risk-benefit profile often render NOACs a more preferable therapy choice for neurologists...
December 12, 2016: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/27900867/-new-direct-oral-anticoagulants-actual-review
#6
Jana Michalcová, Miroslav Penka, Alena Buliková, Jiřina Zavřelová, Andrea Štěpařová
In recent years the options of anticoagulant/antithrombotic therapy have extended with new - direct oral anticoagulants, comprising direct thrombin inhibitors (dabigatran etexilate) and direct factor Xa inhibitors (rivaroxaban, apixaban). These agents represent another progress towards "the ideal antithrombotic drug", and thus towards a safe and effective antithrombotic therapy. The following article provides actual review and recommendations for clinical practice, including laboratory assessment and management of emergency situations...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27789605/reversal-of-anticoagulation-and-management-of-bleeding-in-patients-on-anticoagulants
#7
Prajwal Dhakal, Supratik Rayamajhi, Vivek Verma, Krishna Gundabolu, Vijaya R Bhatt
Bleeding is the most common complication of all anticoagulants. Any bleeding patient on an anticoagulant should be risk-stratified based on hemodynamic instability, source of bleeding, and degree of blood loss. Although minor bleed may be managed with discontinuation of anticoagulant, major bleed may require transfusion of blood products and use of specific antidote. The residual effects of each anticoagulant may be monitored with distinct coagulation assay. Intravenous or oral vitamin K can reverse the effect of warfarin within 24 to 48 hours and is indicated for any bleeding, international normalized ratio of >10 or 4...
January 1, 2016: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/27766043/doacs-advances-and-limitations-in-real-world
#8
REVIEW
Lai Heng Lee
The group of new oral anticoagulants or NOACs, now termed direct oral anticoagulants or DOACs, with their favourable results from large scale phase III clinical trials, represent a major advancement and expanded armamentarium in antithrombotic therapy. Dabigatran, rivaroxaban, apixaban and edoxaban are now in clinical routine use for prevention and treatment of arterial and venous thrombotic diseases as addressed in their clinical trials. Usage of the DOACs is expected to increase as clinicians gain more experience and reassurance with data from the real world studies which are generally consistent with that from clinical trials...
2016: Thrombosis Journal
https://www.readbyqxmd.com/read/27626268/-antidotes-to-novel-direct-oral-anticoagulants
#9
REVIEW
N G Khorev, A P Momot, V O Kon'kova
During the last 10 years, several novel direct oral anticoagulants (NOACs) have entered the clinical arena and were registered in the Russian Federation for use in patients presenting with atrial fibrillation, venous thrombosis, and pulmonary artery thromboembolism. NOACs are classified into two groups: direct thrombin inhibitor (notably dabigatran) and factor Xa inhibitors (including rivaroxaban, apixaban, and edoxaban). Their disadvantage is lack of specific antidotes in case of an emergency situation (injury, infarction, stroke requiring thrombolysis, urgent operation)...
2016: Angiologii︠a︡ i Sosudistai︠a︡ Khirurgii︠a︡, Angiology and Vascular Surgery
https://www.readbyqxmd.com/read/27594818/novel-oral-anticoagulants-for-venous-thromboembolism-with-special-emphasis-on-risk-of-hemorrhagic-complications-and-reversal-agents
#10
Zaheer Ahmed, Seemeen Hassan, Gary A Salzman
Warfarin was the only oral anticoagulant available for the treatment of venous thromboembolism for about half a century until the recent approval of novel oral agents dabigatran, rivoraxaban and apixaban. This presents new classes of medications less cumbersome to use. They do not require frequent laboratory monitoring or have nurmerous drug interactions. On the other hand it also poses a challenge to the physicians deciding which agent to use in specific patient populations, how to predict the bleeding risk compared to warfarin and between the different novel agents and how to manage bleeding with relatively recent discovery of few potential antidotes...
April 2016: Current Drug Therapy
https://www.readbyqxmd.com/read/27548686/reversal-agents-for-direct-oral-anticoagulants-understanding-new-and-upcoming-options
#11
REVIEW
Kelly C Rogers, Melanie P Shelton, Shannon W Finks
Direct oral anticoagulants (DOACs), originally developed as an alternative for vitamin K antagonists, are shifting the landscape of antithrombotic therapy. DOACs such as dabigatran, rivaroxaban, apixaban, and edoxaban offer enhancements in safety, convenience, and efficacy compared with warfarin. However, as choices for oral anticoagulation therapy have increased, so has the need for effectual antidotes before urgent surgical procedures and for the reversal of serious adverse events caused by DOACs. To date, one antidote has been FDA approved in the United States for the reversal of dabigatran, and two antidotes are undergoing phase 2and 3clinical trials...
November 2016: Cardiology in Review
https://www.readbyqxmd.com/read/27545637/-new-oral-anticoagulants-noac-in-nephrology
#12
Antonio Bellasi, Luca Di Lullo, Gianvincenzo Melfa, Claudio Minoretti, Carlo Ratti, Carlo Campana, Maurizio Volpi, Stefano Mangano, Biagio Di Iorio, Mario Cozzolino
The new or direct oral anticoagulants [new oral anticoagulants (NOAC) or direct oral anticoagulants (DOAC)] were launched in the Italian market in 2013. Although these compounds share common pharmacological indications with vitamin K antagonists (warfarin or acenocumarol), they have different mechanisms of action, do not require a constant anticoagulant monitoring but are more efficacious and safer than vitamin K antagonists. The use of these molecules (Dabigatran, Apixaban, Rivaroxaban, Betrixaban, Edoxaban) is constantly rising in daily practice...
July 2016: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/27543264/management-of-bleeding-in-patients-treated-with-direct-oral-anticoagulants
#13
REVIEW
Marcel Levi
BACKGROUND: Recently, a new generation of direct-acting oral anticoagulants (DOACs) with a greater specificity towards activated coagulation factors was introduced based on encouraging results for efficacy and safety in clinical studies. An initial limitation of these new drugs was the absence of an adequate strategy to reverse the effect if a bleeding event occurs or an urgent invasive procedure has to be carried out. MAIN TEXT: Specific reversing agents for DOACs have become available, however, and are now evaluated in clinical studies...
August 20, 2016: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/27399455/176%C3%A2-andexanet-alfa-an-investigational-universal-antidote-for-reversal-of-anticoagulation-of-factor-xa-inhibitors-in-healthy-human-volunteers
#14
Florie Mar, Mark Crowther, Alex Gold, Genmin Lu, Janet Leeds, Brian Wiens, Vandana Mathur, Janice Castillo, Pamela Conley, Stuart Connolly, John Curnutte
INTRODUCTION: Direct FXa inhibitors have demonstrated convincing anticoagulant efficacy. However, risk of major bleeding is a concern and no specific antidotes are available for reversal. Andexanet alfa (AnXa), a recombinant modified FXa, is an investigational specific antidote for FXa inhibitors. We report data from the ANNEXA"! Phase 3 registration studies in older healthy subjects anticoagulated with apixaban (apix) or rivaroxaban (riva). METHODS: ANNEXA A&R were 2 phase 3, randomized, double-blind, placebo-controlled studies of AnXa in healthy subjects age 50 to 75 administered either apixaban or rivaroxaban...
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27380051/-perioperative-coagulation-management-during-ascending-aorta-replacement-on-apixaban
#15
C Dumps, E Halbeck, J Schimpf, H Forst
The direct oral anticoagulants (DOACs) present a valid therapeutic alternative to vitamin K antagonists in patients with non-valvular atrial fibrillation, for the prevention of venous thromboembolism, and for the treatment and prevention of the recurrence of pulmonary embolisms and deep vein thrombosis. Despite Idarucizumab as an antagonist of Dabigatran there are no other specific antidotes available yet. Therefore, perioperative coagulation management by DOACs is challenging in patients undergoing emergency surgical procedures with a high risk of bleeding complications...
August 2016: Der Anaesthesist
https://www.readbyqxmd.com/read/27297852/noac-monitoring-reversal-agents-and-post-approval-safety-and-effectiveness-evaluation-a-cardiac-safety-research-consortium-think-tank
#16
REVIEW
James A Reiffel, Jeffrey I Weitz, Paul Reilly, Edvardas Kaminskas, Troy Sarich, Philip Sager, Jonathan Seltzer
Four non-vitamin K antagonist oral anticoagulants (dabigatran, rivaroxaban, apixaban, and edoxaban) have been approved in the United States for treatment of atrial fibrillation (AF) and venous thromboembolic disease. They have been as or more effective than the prior standards of care, with less fatal or intracranial bleeding, fewer drug and dietary interactions, and greater patient convenience. Nonetheless, the absence of the ability for clinicians to assess compliance or washout with a simple laboratory test (or to adjust dosing with a similar assessment) and the absence of an antidote to rapidly stop major hemorrhage or to enhance safety in the setting of emergent or urgent surgery/procedures have been limitations to greater non-vitamin K antagonist oral anticoagulant usage and better thromboembolic prevention...
July 2016: American Heart Journal
https://www.readbyqxmd.com/read/27293895/direct-acting-oral-anticoagulants-practical-considerations-for-emergency-medicine-physicians
#17
REVIEW
W Frank Peacock, Zubaid Rafique, Adam J Singer
Nonvalvular atrial fibrillation- (NVAF-) related stroke and venous thromboembolism (VTE) are cardiovascular diseases associated with significant morbidity and economic burden. The historical standard treatment of VTE has been the administration of parenteral heparinoid until oral warfarin therapy attains a therapeutic international normalized ratio. Warfarin has been the most common medication for stroke prevention in NVAF. Warfarin use is complicated by a narrow therapeutic window, unpredictable dose response, numerous food and drug interactions, and requirements for frequent monitoring...
2016: Emergency Medicine International
https://www.readbyqxmd.com/read/27255713/drug-treatment-of-venous-thromboembolism-in-the-elderly
#18
REVIEW
Jir Ping Boey, Alexander Gallus
Half of all patients with acute venous thromboembolism are aged over 70 years; they then face the added hazard of an age-related increase in the incidence of major bleeding. This makes it even more important to weigh the balance of benefit and risk when considering anticoagulant treatment and treatment duration. Traditional treatment with a heparin (usually low molecular weight) followed by a vitamin K antagonist such as warfarin is effective but is often complicated, especially in the elderly. The direct-acting oral anticoagulants (DOACs), i...
July 2016: Drugs & Aging
https://www.readbyqxmd.com/read/27174293/minimizing-the-risk-of-bleeding-with-noacs-in-the-elderly
#19
REVIEW
Amartya Kundu, Partha Sardar, Saurav Chatterjee, Wilbert S Aronow, Theophilus Owan, John J Ryan
Novel oral anticoagulants (NOACs) such as dabigatran, rivaroxaban, apixaban and edoxaban have gained a lot of popularity as alternatives to warfarin for anticoagulation in various clinical settings. However, there is conflicting opinion regarding the absolute benefit of NOAC use in elderly patients. Low body mass, altered body composition of fat and muscle, renal impairment and concurrent presence of multiple comorbidities predispose elderly patients to many adverse effects with NOACs that are typically not seen in younger patients...
July 2016: Drugs & Aging
https://www.readbyqxmd.com/read/27082776/specific-antidotes-against-direct-oral-anticoagulants-a-comprehensive-review-of-clinical-trials-data
#20
REVIEW
Ramyashree Tummala, Ana Kavtaradze, Anjan Gupta, Raktim Kumar Ghosh
The Vitamin K antagonist warfarin was the only oral anticoagulant available for decades for the treatment of thrombosis and prevention of thromboembolism until Direct Oral Anticoagulants (DOACs); a group of new oral anticoagulants got approved in the last few years. Direct thrombin inhibitor: dabigatran and factor Xa inhibitors: apixaban, rivaroxaban, and edoxaban directly inhibit the coagulation cascade. DOACs have many advantages over warfarin. However, the biggest drawback of DOACs has been the lack of specific antidotes to reverse the anticoagulant effect in emergency situations...
July 1, 2016: International Journal of Cardiology
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