Warfarin Institute of America

Dedicated to Your Health

INR Self-Testing from Raytel

 

INDICATIONS

( REASONS FOR TAKING WARFARIN)

ATRIAL FIBRILLATION

  This is an irregular heart beat.  The danger from this is that blood will pool in the heart and form a small clot.  If this clot gets pumped out of the heart, it usually goes to the brain and causes a stroke.  This is the leading cause of stroke.  Properly regulated warfarin therapy is very effective in preventing stroke.  Treatment usually continues as long as the heart is not in normal rhythm.

Suggested Link

http://www.warfarinfo.com/recurrent-stroke.htm

 

An Electrocardiogram (EKG) Showing Atrial Fibrillation

A Deep Vein Thrombosis Removed at Autopsy

Courtesy Rhone-Poulenc Rorer

DEEP VEIN THROMBOSIS

  These are blood clots, usually in the leg.  Risk factors are age, obesity, recent surgery, varicose veins, recent childbirth, respiratory failure, immobility such as sitting for a long trip, wearing a plaster cast, bed rest and heart failure.  Studies have not clearly shown how long warfarin treatment should be continued.  Medical experts usually recommend more than three months to one year or more.

  

PULMONARY EMBOLISM

  A blood clot in the lung.  This is often related to a deep vein thrombosis.  The vein from the leg travels up through larger and larger veins until it goes through the heart.  Then it comes to smaller and smaller vessels until it cannot pass through the lungs.  This may be fatal.  There is no proof of how long this should be treated.

A Pulmonary Embolism Removed at Autopsy

Courtesy Rhone-Poulenc Rohrer

MECHANICAL HEART VALVES

  Since it is a foreign body, a mechanical heart valve can be a source for a clot forming.  These may occur at any time, even years after the valve was inserted.  Mechanical valves necessitate life-long anticoagulation at a higher intensity than that used for other conditions.

 

Thanks to Sandy Nebl, FNP

OTHER CLOTTING DISORDERS

  There are many other clotting disorders such a an Antithrombin III deficiency, Protein C deficiency, Protein S deficiency, Factor V (Leiden) Mutation,  Antiphospholipid Antibodies, Anticardiolipin Antibodies and others.  These are either genetic or acquired.  Usually these require life-long anticoagulation therapy.  A recent heart attack is another reason for using warfarin.  This treatment is usually for several months.

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Last updated January 1, 2006

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