Anticoagulant

From Citizendium
Revision as of 15:23, 24 January 2008 by imported>Robert Badgett (→‎Warfarin combined with heparin)
Jump to navigation Jump to search
This article is developing and not approved.
Main Article
Discussion
Related Articles  [?]
Bibliography  [?]
External Links  [?]
Citable Version  [?]
 
This editable Main Article is under development and subject to a disclaimer.

Anticoagulants are "agents that prevent blood clotting".[1] They may be used to prevent embolism and thromboembolism.

[edit intro]

Vitamin K antagonists

Warfarin

For more information, see: warfarin.

Warfarin is a commonly used oral anticoagulant that interferes with the Vitamin K dependent coagulation co-factors.

Heparin

Details of the usage of heparin are available in clinical practice guidelines by the American College of Chest Physicians[2]:

Direct thrombin inhibitors

Direct thrombin inhibitors bind directly to thrombin.[3]

Factor Xa inhibitors

Idraparinux is a synthetic derivative of heparin that has a long half life that allows once-weekly dosage. A randomized controlled trial compared idraparinux to warfarin and found that idraparinux is equivalent for deep venous thrombosis but is inferior for pulmonary embolism.[4]

Warfarin combined with heparin

Warfarin combined with heparin did not benefit survivors of acute myocardial infarction in a randomized controlled trial.[5]

Warfarin combined with heparin reduced events, but increased bleeding, among survivors of acute myocardial infarction in a randomized controlled trial.[6]

References

  1. Anonymous (2024), Anticoagulants (English). Medical Subject Headings. U.S. National Library of Medicine.
  2. Hirsh J, Raschke R (2004). "Heparin and low-molecular-weight heparin: the Seventh ACCP Conference on Antithrombotic and Thrombolytic Therapy". Chest 126 (3 Suppl): 188S-203S. DOI:10.1378/chest.126.3_suppl.188S. PMID 15383472. Research Blogging.
  3. Di Nisio M, Middeldorp S, Büller HR (2005). "Direct thrombin inhibitors". N. Engl. J. Med. 353 (10): 1028–40. DOI:10.1056/NEJMra044440. PMID 16148288. Research Blogging.
  4. Buller HR, Cohen AT, Davidson B, et al (2007). "Idraparinux versus standard therapy for venous thromboembolic disease". N. Engl. J. Med. 357 (11): 1094–104. DOI:10.1056/NEJMoa064247. PMID 17855670. Research Blogging.
  5. Fiore LD, Ezekowitz MD, Brophy MT, Lu D, Sacco J, Peduzzi P (2002). "Department of Veterans Affairs Cooperative Studies Program Clinical Trial comparing combined warfarin and aspirin with aspirin alone in survivors of acute myocardial infarction: primary results of the CHAMP study". Circulation 105 (5): 557–63. PMID 11827919[e]
  6. Hurlen M, Abdelnoor M, Smith P, Erikssen J, Arnesen H (2002). "Warfarin, aspirin, or both after myocardial infarction". N. Engl. J. Med. 347 (13): 969–74. DOI:10.1056/NEJMoa020496. PMID 12324552. Research Blogging.

See also

External links

The Seventh ACCP Conference on Antithrombotic and Thrombolytic Therapy: Evidence-Based Guidelines