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Definition:

Hypercoagulable states are conditions that may lead to the abnormal development of blood clots . Blood clots can develop in either arteries or veins.

See also:



Alternative Names:

Thromboembolic states; Factor V Leiden; Prothrombin mutation 20210A



Causes, incidence, and risk factors:

Hypercoagulable states fall into two groups:

  • Inherited
  • Acquired

Inherited means you are born with the tendency to form abnormal blood clots. Common inherited conditions that affect clotting are factor V Leiden and the prothrombin mutation 20210A. Rare inherited conditions include protein C, protein S, and antithrombin III deficiencies.

Acquired means you develop it later in life. Some medical situations can lead to the formation of abnormal blood clots. These include cancer, recent surgery or trauma, obesity, liver or kidney disease, and use of certain medications.

Conditions that can lead to the formation of blood clots include prolonged bedrest, dehydration , poor positioning (such as crossing the legs), sitting for long periods (such as in a plane or car), and long-term use of an intravenous catheter.

In women, birth control pills or hormone replacement therapy increase the risk of blood clots, and the risk is greatly increased in those who also smoke. The time before, during, and after pregnancy also increase the risk of clots.



Symptoms:



Signs and tests:



Treatment:



Support Groups:



Expectations (prognosis):



Complications:



Calling your health care provider:



Prevention:



References:

Hypercoagulable states. In: Hoffman R, Benz EJ, Shattil SS, et al. Hematology: Basic Principles and Practice. 4th ed. Orlando, Fl: Churchill Livingstone; 2005: chap. 127.




Review Date: 6/10/2008
Reviewed By: Sean O. Stitham, MD, private practice in Internal Medicine, Seattle, Washington; and James R. Mason, MD, Oncologist, Director, Blood and Marrow Transplantation Program and Stem Cell Processing Lab, Scripps Clinic, Torrey Pines, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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Wentworth-Douglass Hospital
789 Central Avenue, Dover, NH 03820
Phone: (603) 742-5252
Toll free: 1 (877) 201-7100