Copyright © 2008. American Society of Health-System Pharmacists, Inc. All rights reserved. 1079-2082/04/0602-1242$06.00
Rivaroxaban: An oral direct inhibitor of factor XaMICHAEL P. GULSETH, PHARM.D., BCPS, is Assistant Professor, University of Minnesota College of Pharmacy, and Clinical Specialist, St. Marys Medical Center, Duluth. JESSICA MICHAUD, PHARM.D., BCPS, is Clinical Assistant Professor, Department of Pharmacy Practice, University of Illinois at Chicago College of Pharmacy (UICCP), and Clinical Pharmacist, Antithrombosis Center, University of Illinois Medical Center at Chicago (UIMCC), Chicago. EDITH A. NUTESCU, PHARM.D., FCCP, is Clinical Associate Professor, Department of Pharmacy Practice, and Affiliate Faculty Member, Center for Pharmacoeconomic Research, UICCP, and Director, Antithrombosis Center, UIMCC. Address correspondence to Dr. Gulseth at the University of Minnesota College of Pharmacy, 1110 Kirby Drive, 127 Life Science, Duluth, MN 55812 (mgulseth{at}umn.edu).
Summary. Rivaroxaban, the first oral, direct factor Xa (FXa) inhibitor to reach Phase III trials, inhibits thrombin generation by both the intrinsic and the tissue factor pathways. It has shown predictable, reversible inhibition of FXa activity, and it may have the ability to inhibit clot-bound FXa. Rivaroxaban is being evaluated for prevention of venous thrombosis in patients undergoing hip or knee arthroplasty, treatment of venous thrombosis, long-term use for secondary prevention of venous thrombosis, and prevention of stroke in atrial fibrillation. To date, only short-term trials have been reported, but rivaroxabans safety and efficacy appear to be at least equivalent to those of traditional anticoagulants. The results of four studies of primary prevention of venous thrombosis in patients undergoing orthopedic surgery suggest that rivaroxaban 10 mg daily is a promising alternative to low-molecular-weight heparins. Rivaroxaban appears to have a low potential for drug–drug or drug–food interactions. It offers the advantages of a fixed oral dose, rapid onset of action, and predictable and consistent anticoagulation effect, precluding the need for routine monitoring of anticoagulation.
Conclusion. Rivaroxaban is a promising alternative to traditional anticoagulants for the prevention and treatment of venous thromboembolism and for stroke prevention in atrial fibrillation; it offers once-daily oral administration without the need for routine monitoring.
Index terms: Mechanism of action; Pharmacokinetics; Rivaroxaban; Thrombolytic agents; Toxicity; Venous thrombosis
|
|||||||||||||||||||||||