Related Experiment Video
Updated: May 17, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
New oral anticoagulants: an alternative to warfarin
1Ashford & St. Peter's Hospitals NHS Foundation Trust, Surrey, UK. Peter.Wilkinson@asph.nhs.uk
Abstract:
New agents have been introduced for the prevention of inappropriate thrombosis in the vascular tree and the heart. This article reviews, compares and contrasts the newer agents which inhibit activated factor X (Xa) or activated factor II (thrombin).
Insights
New anticoagulant medications target key clotting factors to prevent harmful blood clots in the heart and blood vessels. This review compares novel agents inhibiting factor Xa or thrombin.
Area of Science:
- Pharmacology
- Cardiovascular Medicine
- Hematology
Background:
- Inappropriate thrombosis poses significant risks in the vascular tree and heart.
- Anticoagulant therapy is crucial for preventing thrombotic events.
Purpose of the Study:
- To review and compare newer anticoagulant agents.
- To contrast agents that inhibit activated factor X (FXa) or activated factor II (thrombin).
Main Methods:
- Literature review of newer anticoagulant agents.
- Comparative analysis of drug mechanisms and targets.
Main Results:
- Newer agents offer alternative mechanisms for inhibiting thrombosis.
- Agents targeting FXa and thrombin represent distinct classes of anticoagulants.
Conclusions:
- Understanding the differences between FXa and thrombin inhibitors is essential for clinical practice.
- These newer agents expand therapeutic options for preventing inappropriate thrombosis.
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...
Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence
Antiarrhythmic Drugs: Class IV Agents as Calcium Channel Blockers
Verapamil, a calcium channel blocker, inhibits calcium movement across myocardial cell membranes and vascular smooth muscle. This results in the dilation of coronary and...

