Related Experiment Video
Updated: May 16, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
New oral anticoagulants: which one should my patient use?
Jeffrey I Weitz1, Peter L Gross
1Department of Medicine, McMaster University, Hamilton, ON, Canda. weitzj@taari.ca
Abstract:
The new oral anticoagulants are rapidly replacing warfarin for several indications. In contrast to warfarin, which lowers the functional levels of all of the vitamin K-dependent clotting factors, the new agents target either factor Xa or thrombin. With targeted inhibition of coagulation, the new oral anticoagulants have pharmacologic and clinical features that distinguish them from warfarin. Focusing on these features, this paper (a) compares the pharmacology of the new oral anticoagulants with that of warfarin (b) identifies the class effects of these drugs and their differentiating features, (c) reviews their current indications, and (d) uses this information to help clinicians make informed decisions regarding the choice of the right anticoagulant for the right patient.
Insights
New oral anticoagulants offer targeted coagulation inhibition, differing from warfarin. This review compares their pharmacology and indications to guide optimal anticoagulant selection for patients.
Area of Science:
- Pharmacology
- Hematology
- Clinical Medicine
Background:
- New oral anticoagulants are increasingly used, replacing warfarin for various indications.
- Unlike warfarin, these agents selectively inhibit Factor Xa or thrombin.
- This targeted approach presents distinct pharmacologic and clinical profiles.
Purpose of the Study:
- To compare the pharmacology of new oral anticoagulants (NOACs) with warfarin.
- To identify class effects and differentiating features of NOACs.
- To review current indications for NOACs and guide clinical decision-making.
Main Methods:
- Comparative pharmacology review.
- Analysis of clinical trial data and guidelines.
- Synthesis of information for clinical application.
Main Results:
- NOACs exhibit targeted inhibition, distinct from warfarin's broad vitamin K-dependent factor reduction.
- Key class effects and differentiating pharmacologic properties were identified.
- Current indications and evidence supporting NOAC use were reviewed.
Conclusions:
- Understanding NOAC pharmacology and indications is crucial for effective patient management.
- Clinicians can use this comparative information to select the most appropriate anticoagulant.
- Informed choices ensure optimal therapeutic outcomes and patient safety.
Related Concept Videos
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Venous Thrombosis III: Interprofessional Care
Antiplatelet Drugs: Prostaglandin Synthesis, P2Y12 and Glycoprotein IIb/IIIa Inhibitors
Prostaglandin synthesis inhibitors, exemplified by the widely known aspirin, wield their power by irreversibly acetylating...
Pulmonary Embolism II: Diagnostic Studies and Interprofessional Care
Venous Thrombosis IV: Nursing Management

