scholarly journals Management of Venous Thromboembolism in Patients with Advanced Gastrointestinal Cancers: What Is the Role of Novel Oral Anticoagulants?

Thrombosis ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Ludmila Katherine Martin ◽  
Tanios Bekaii-Saab
Keyword(s):  
Venous Thromboembolism ◽  
Gastrointestinal Cancer ◽  
Vitamin K Antagonists ◽  
Dabigatran Etexilate ◽  
Oral Anticoagulants ◽  
Safety Data ◽  
Novel Oral Anticoagulants ◽  
Gastrointestinal Cancers ◽  
Frequent Monitoring

Venous thromboembolism (VTE) is a frequent complication of gastrointestinal cancers that increases morbidity and may impact mortality. Low-molecular-weight heparins (LMWHs) and vitamin K antagonists (VKAs) are standard anticoagulation options for the ambulatory gastrointestinal cancer patient with VTE, but both of these agents are challenging to use for various reasons. Novel oral anticoagulants (NOAs) are new, orally available anticoagulants designed to be easier to administer with more reliable pharmacokinetics that eliminate the need for frequent monitoring of various laboratory parameters. This paper reviews the existing efficacy and safety data for the use of NOAs dabigatran etexilate, rivaroxaban, and apixaban and discusses the potential role of these agents in the management of gastrointestinal cancer-related VTE.

RE-COVERY DVT/PE: Rationale and design of a prospective observational study of acute venous thromboembolism with a focus on dabigatran etexilate

2017 ◽  
Vol 117 (02) ◽  
pp. 415-421 ◽  
Author(s):  
Walter Ageno ◽  
Ivan B. Casella ◽  
Chee Kok Han ◽  
Gary E. Raskob ◽  
Sebastian Schellong ◽  
...  
Keyword(s):  
Venous Thromboembolism ◽  
Vitamin K ◽  
Large Scale ◽  
Vitamin K Antagonists ◽  
Phase 1 ◽  
Dabigatran Etexilate ◽  
Oral Anticoagulants ◽  
Phase Iii ◽  
Real World Data ◽  
Phase Iii Studies

SummaryThe therapeutic management of venous thromboembolism (VTE) is rapidly evolving. Following the positive results of pivotal large-scale randomised trials, the non-vitamin K antagonist oral anticoagulants (NOACs) represent an important alternative to standard anticoagulation. In phase III studies, dabigatran was as effective as, and significantly safer than warfarin. Additional information on real-world data of dabigatran is now warranted. RE-COVERY DVT/PE is a multi-centre, international, observational (i. e. non-interventional) study enrolling patients with acute DVT and/or PE within 30 days after objective diagnosis. The study is designed with two phases. Phase 1 has a cross-sectional design, enrolling approximately 6000 patients independently of treatment choice, with the aim of providing a contemporary picture of the management of VTE worldwide. Phase 2 has a prospective cohort design, with follow-up of one year, enrolling 8000 patients treated with dabigatran or vitamin K antagonists (VKAs) with the aim of comparing their safety, defined by the occurrence of major bleeding, and effectiveness, defined by the occurrence of symptomatic recurrent VTE. RE-COVERY DVT/PE will complement both the results of other observational studies in this field and the results of phase III studies with dabigatran, in particular by assessing its clinical benefit in various patient subgroups treated in routine clinical practice.

Novel anticoagulants: a discussion of clinical use in the treatment and prevention of venous thromboembolism

2011 ◽  
Vol 26 (1) ◽  
pp. 3-7 ◽  
Author(s):  
J Knepper ◽  
E Ramacciotti ◽  
T W Wakefield
Keyword(s):  
Venous Thromboembolism ◽  
Vitamin K Antagonists ◽  
Oral Anticoagulants ◽  
Safety Data ◽  
Bleeding Complications ◽  
Pharmacological Management ◽  
Treatment And Prevention ◽  
Dose Monitoring ◽  
Favourable Safety Profile ◽  
Review Reports

Traditional therapeutic oral anticoagulation strategies often require invasive dosing or monitoring. Vitamin K antagonists (VKAs) have a large number of interactions, delayed onset requires frequent dose monitoring, and they have a small margin between therapeutic dose and bleeding complications. Novel oral anticoagulants, such as dabigatran, rivaroxaban and apixaban, are being developed to prevent those VKAs drawbacks. Besides oral bioavailability, those compounds are designed to require minimal to no monitoring and have a favourable safety profile. This review reports efficacy and safety data of these compounds throughout clinical development, as well as new approaches for oral pharmacological management of venous thromboembolism.

scholarly journals Efficacy and safety of novel oral anticoagulants versus vitamin K antagonists in the treatment of venous thromboembolism

2018 ◽  
Vol 13 (3) ◽  
pp. 273
Author(s):  
Maodi Xu ◽  
Qingquan Xue ◽  
Zhichen Pu ◽  
Zijing Wu ◽  
Haitang Xie
Keyword(s):  
Venous Thromboembolism ◽  
Vitamin K ◽  
Meta Analysis ◽  
Vitamin K Antagonists ◽  
Oral Anticoagulants ◽  
New Oral Anticoagulants ◽  
Novel Oral Anticoagulants ◽  
Efficacy And Safety ◽  
Bleeding Events ◽  
The Difference

<p>The aim of this meta-analysis was to systematically evaluate the efficacy and safety of novel oral anticoagulants and vitamin K antagonists in the treatment of venous thromboembolism. A total of 6 studies met the inclusion criteria and a total of 19,350 patients with venous thromboembolism were included. Among them, rivaroxaban (3 RCTs, n=90/3,449/4,832); dabigatran (2 RCTs, n=200/2,539); edoxaban (1 RCT, n=8,240). The results of meta-analysis showed that the total bleeding rate after treatment with the vitamin K antagonist group was higher than with the new oral anticoagulant group (OR=0.82, 95% confidence interval 0.75-0.90, p&lt;0.0001), and the difference was highly statistically significant. Overall, new oral anticoagulants are compara-ble to vitamin K antagonists, but new oral anticoagulants can reduce the occurrence of bleeding events and the safety was superior to vitamin K antagonists.</p>

Novel oral anticoagulants - key messages for the angiologist

VASA ◽  
2012 ◽  
Vol 41 (3) ◽  
pp. 177-191 ◽  
Author(s):  
Haas ◽  
Spannagl ◽  
M. Schellong
Keyword(s):  
Clinical Evidence ◽  
Vitamin K Antagonists ◽  
Dabigatran Etexilate ◽  
Oral Anticoagulants ◽  
Factor Xa ◽  
Novel Oral Anticoagulants ◽  
Bleeding Complications ◽  
Thrombin Inhibitor ◽  
Clinical Scenarios ◽  
Major Orthopaedic Surgery

Novel oral anticoagulants (NOACs) have become available for different clinical indications such as the prevention of venous thromboembolism (VTE) after major orthopaedic surgery, for the treatment of VTE and stroke prevention in patients with atrial fibrillation (AF). One thrombin inhibitor (dabigatran etexilate) and two factor Xa-inhibitors (rivaroxaban and apixaban) are the most advanced NOACs and therefore, up-to-date information on their evidence and use in clinical practice appears timely. In this review we give a concise overview of the pharmacology and clinical evidence derived from phase 3 clinical trials. Then the meaningfulness of laboratory testing is discussed and recommendations are given for clinical scenarios that may necessitate adjustment of their use. We conclude that NOACs are valuable alternatives to heparins or vitamin K antagonists (VKA) in the prevention and treatment of VTE and for the prevention of stroke in patients with AF. Prescribers should however be aware of special situations and patient populations where the manufacturers’ instructions need to be carefully followed. In particular, patients with comorbidities and co-medications may require individual decision making in order to prevent bleeding complications.

Pros and cons of new oral anticoagulants

Hematology ◽  
2013 ◽  
Vol 2013 (1) ◽  
pp. 464-470 ◽  
Author(s):  
Kenneth A. Bauer
Keyword(s):  
Venous Thromboembolism ◽  
Vitamin K Antagonists ◽  
Dabigatran Etexilate ◽  
Oral Anticoagulants ◽  
Factor Xa ◽  
Rapid Onset ◽  
New Oral Anticoagulants ◽  
Therapeutic Class ◽  
Pros And Cons ◽  
Additional Agent

Abstract The availability of new oral anticoagulants (NOACs) targeting either thrombin (dabigatran etexilate) or factor Xa (rivaroxaban and apixaban) for the prevention and treatment of thrombosis has been highly anticipated. NOACs have major pharmacologic advantages over vitamin K antagonists (eg, warfarin), including rapid onset/offset of action, few drug interactions, and predictable pharmacokinetics, eliminating the requirement for regular coagulation monitoring. Regulatory agencies have approved several NOACs for specific indications based on the results of clinical trials demonstrating efficacy and safety that are at least as good, if not better, than warfarin (for stroke prevention in atrial fibrillation and treatment and secondary prevention of venous thromboembolism) or low-molecular-weight heparin, which is injectable (for initial treatment of venous thromboembolism and thromboprophylaxis in patients undergoing hip or knee arthroplasty). However, the adoption of this new therapeutic class into clinical practice has been slower than expected due to several factors including concerns regarding medication adherence without laboratory monitoring, uncertainty about dosing in some patient populations (eg, renal dysfunction, marked extremes of body weight), and higher drug costs compared with warfarin. Other issues are the current absence of specific antidotes for NOACs and assays to measure drug levels at most centers. The indications for NOACs on the market will expand and at least one additional agent (edoxaban) will likely gain approval within the next 2 years. As practitioners gain familiarity with the drugs and healthcare systems adapt to their use, NOAC use will increase substantially over time. Warfarin, however, will continue to be an appropriate anticoagulant choice for many patients.

Prevention and Treatment of Venous Thromboembolism and Pulmonary Embolism: The Role of Novel Oral Anticoagulants

2012 ◽  
Vol 7 (3) ◽  
pp. 175-194 ◽  
Author(s):  
Spyridon Deftereos ◽  
Georgios Hatzis ◽  
Charalambos Kossyvakis ◽  
Georgios Bouras ◽  
Vasiliki Panagopoulou ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Venous Thromboembolism ◽  
Oral Anticoagulants ◽  
Novel Oral Anticoagulants ◽  
Prevention And Treatment

scholarly journals Direct oral anticoagulants and venous thromboembolism

2016 ◽  
Vol 25 (141) ◽  
pp. 295-302 ◽  
Author(s):  
Massimo Franchini ◽  
Pier Mannuccio Mannucci
Keyword(s):  
Venous Thromboembolism ◽  
Vitamin K Antagonists ◽  
Dabigatran Etexilate ◽  
Oral Anticoagulants ◽  
Direct Oral Anticoagulants ◽  
Factor Xa ◽  
Thrombin Inhibitors ◽  
Vein Thrombosis ◽  
Direct Anticoagulants ◽  
Deep Vein

Venous thromboembolism (VTE), consisting of deep vein thrombosis and pulmonary embolism, is a major clinical concern associated with significant morbidity and mortality. The cornerstone of management of VTE is anticoagulation, and traditional anticoagulants include parenteral heparins and oral vitamin K antagonists. Recently, new oral anticoagulant drugs have been developed and licensed, including direct factor Xa inhibitors (e.g. rivaroxaban, apixaban and edoxaban) and thrombin inhibitors (e.g. dabigatran etexilate). This narrative review focusses on the characteristics of these direct anticoagulants and the main results of published clinical studies on their use in the prevention and treatment of VTE.

scholarly journals Atrial Fibrillation and Stroke. A Review on the Use of Vitamin K Antagonists and Novel Oral Anticoagulants

Medicina ◽  
2019 ◽  
Vol 55 (10) ◽  
pp. 617 ◽  
Author(s):  
Caturano ◽  
Galiero ◽  
Pafundi
Keyword(s):  
Atrial Fibrillation ◽  
Vitamin K ◽  
Stroke Risk ◽  
Vitamin K Antagonists ◽  
Oral Anticoagulants ◽  
Life Quality ◽  
Novel Oral Anticoagulants ◽  
New Findings ◽  
Ischemic Stroke Risk

Atrial fibrillation (AF) is the most common arrhythmia, ranging from 0.1% in patients <55 years to >9% in octogenarian patients. One important issue is represented by the 5-fold increased ischemic stroke risk in AF patients. Hence, the role of anticoagulation is central. Until a few years ago, vitamin K antagonists (VKAs) and low molecular weight heparin represented the only option to prevent thromboembolisms, though with risks. Novel oral anticoagulants (NOACs) have radically changed the management of AF patients, improving both life expectancy and life quality. This review aims to summarize the most recent literature on the use of VKAs and NOACs in AF, in light of the new findings.

Emerging anticoagulants for the treatment of venous thromboembolism

2006 ◽  
Vol 96 (09) ◽  
pp. 274-284 ◽  
Author(s):  
Jeffrey Weitz
Keyword(s):  
Venous Thromboembolism ◽  
Vitamin K Antagonists ◽  
Oral Anticoagulants ◽  
Factor Xa ◽  
New Drugs ◽  
New Anticoagulants ◽  
Postphlebitic Syndrome ◽  
Long Acting ◽  
Two Stages

SummaryAnticoagulant therapy is the cornerstone of treatment of venous thromboembolism (VTE). Such treatment is divided into two stages. Rapid initial anticoagulation is given to minimize the risk of thrombus extension and fatal pulmonary embolism, whereas extended anticoagulation is aimed at preventing recurrent VTE, thereby reducing the risk of postphlebitic syndrome. With currently available drugs, immediate anticoagulation can only be achieved with parenteral agents, such as heparin, low-molecular-weight heparin, or fondaparinux. Extended treatment usually involves the administration of vitamin K antagonists,such as warfarin. Emerging anticoagulants have the potential to streamline VTE treatment. These agents include idraparinux, a long-acting synthetic pentasaccharide that is given subcutaneously on a once-weekly basis, and new oral anticoagulants that target thrombin or factor Xa. This paper i) reviews the pharmacology of these agents, ii) outlines their potential strengths and weaknesses, iii) describes the results of clinical trials with these new drugs, and iv) identifies the evolving role of new anticoagulants in the management of VTE.

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