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Deep Vein Thrombosis
- Topic Overview
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Health Tools
- Cause
- Symptoms
- What Happens
- What Increases Your Risk
- When To Call a Doctor
- Exams and Tests
- Treatment Overview
- Prevention
- Home Treatment
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- Other Places To Get Help
- References
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Many factors increase your risk for deep vein thrombosis. Some risk factors do not change, such as genetic blood irregularities. Other risk factors may change according to circumstances, such as pregnancy.
Major risk factors
Major risk factors for deep vein thrombosis include:
- Prolonged bed rest (more than 3 days), such as during a hospital stay.
- Abnormal blood clotting (hypercoagulable state), usually a result of inherited genes from one or both parents.
- Injury.
- Surgery, particularly major hip or knee surgery, neurosurgery, and abdominal or chest surgery associated with cancer.
- Cancer and its treatment.
- Paralysis from a spinal cord injury.
- Having a central venous catheter during a hospital stay.
Minor risk factors
Most of these risk factors are minimal by themselves but may become more significant in combination. Research continues on the importance of these risk factors and how they interrelate.
Your risk for deep vein thrombosis may be increased by:
- Certain health conditions such as varicose veins, heart attack, heart failure, and stroke.
- A long airplane flight or car trip.
- Pregnancy, especially immediately after giving birth or after a cesarean section.
- Increasing age. People older than 40 have a greater risk for deep vein thrombosis.
- Being overweight.
- Taking birth control hormones, such as daily pills or weekly patches. Current evidence shows that a woman's risk for pulmonary embolism, a complication of deep vein thrombosis, increases while she is taking birth control hormones. Past use of birth control pills does not appear to increase this risk.
- Current use of hormone therapy (hormone replacement therapy or estrogen replacement therapy), raloxifene (Evista) for osteoporosis, or the breast cancer treatment tamoxifen (Nolvadex).
- Smoking.
| By: | Healthwise Staff | Last Revised: January 5, 2010 |
| Medical Review: | E. Gregory Thompson, MD - Internal Medicine Jeffrey S. Ginsberg, MD - Hematology | |
© 1995-2011 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.
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