Early detection and treatment of DVT can prevent complications
A thrombus is a blood clot that develops in your heart or a blood vessel. When thrombosis occurs in one of the large veins buried deep in your body, you have a condition called deep vein thrombosis (DVT), a form of peripheral vascular disease. DVT typically forms in the thigh and lower leg but can also form in the arm and pelvis.
Over time, DVT can cause a condition known as post-thrombotic syndrome, in which the DVT damages blood vessels and causes long-term swelling, pain, ulcers and physical disability.
An untreated DVT can break off and travel through the bloodstream and enter the lungs. If the clot is large enough, it can prevent blood from reaching the lungs, cause dangerously low oxygen levels and can even be fatal.
Knowing the symptoms and risk factors of DVT can help you identify and get treatment for these blood clots early.
DVT symptoms
DVT may not cause noticeable symptoms. If you experience symptoms, they affect the area near the leg vein, arm or other area with the blood clot. Symptoms of DVT include:
- Pain
- Redness
- Swelling
- Tenderness
- Severe headache
When DVT moves to the lungs, symptoms may include:
- Chest pain
- Shortness of breath
- Blood when you cough
What causes deep vein thrombosis?
Anything that slows or changes your blood flow can cause blood to clot and cause a DVT to form. Reasons your blood may clot include:
- Being on long-term bed rest
- Giving birth
- Having surgery
- Sitting in the same position for long periods
- Using estrogen or birth control pills
- Smoking or using tobacco products
Deep vein thrombosis risk factors
DVT affects people of all ages, ethnicities and socioeconomic status. You may be at higher risk due to:
- Age: Most cases occur in adults after age 60.
- Limited movement: This often occurs with injury, paralysis, prolonged bed rest or air travel.
- Certain medical conditions: Heart disease, lung disease, cancer, obesity, inflammatory bowel disease (Crohn’s disease or ulcerative colitis), and lupus are among the medical conditions that increase your risk of blood clots.
- Family history: You may inherit a predisposition for blood clots and DVT.
- Injury or surgery: Fractures or surgeries involving the hip, knee or pelvis can cause blood clots.
- Smoking: Tobacco smoke causes blood cells to become sticky and form clots. It also damages blood vessels and increases the formation of blood clots.
Detecting and diagnosing DVT
Diagnosing DVT starts with a discussion of your medical history and a physical exam. Your provider will ask about pain, swelling and other symptoms you’ve experienced, and they may order one or more of the following diagnostic tests:
Blood test
Blood tests can demonstrate if your blood produces clots and measure for specific protein levels or genetic markers that might increase your risk for clotting.
Imaging test
Imaging tests like venography and duplex ultrasounds allow doctors to see through deep veins and arteries. CT scans can also be helpful in certain situations.
DVT treatment
-
Blood thinners
Blood thinners
Blood thinners, also known as anticoagulants, are designed to prevent blood clots from forming.
-
Clot busters
Clot busters
Clot busters work to dissolve blood clots that have already formed.
-
Compression socks
Compression socks
Compression socks apply pressure to your lower legs, helping to maintain blood flow and reduce discomfort and swelling.
-
Surgery and procedures
Surgery and procedures
Surgical procedures include:
- Percutaneous mechanical thrombectomy is a procedure in which a thin, flexible tube is used to help break up, dissolve or suck out a blood clot.
- Surgical venous thrombectomy is a more invasive surgical procedure used to grab and remove the blood clot.
- An inferior vena cava filter is an implanted device to help capture or filter blood clots before they can reach the heart or lungs.
After treatment, your vascular surgeon will monitor you to reduce the chances that you’ll develop another DVT. You can help prevent another blood clot by:
- Attending all your follow-up visits and having follow-up blood tests and ultrasound scans
- Taking medications as directed
- Wearing compression stockings if your provider recommends doing so
Blood thinners
Blood thinners, also known as anticoagulants, are designed to prevent blood clots from forming.
Clot busters
Clot busters work to dissolve blood clots that have already formed.
Compression socks
Compression socks apply pressure to your lower legs, helping to maintain blood flow and reduce discomfort and swelling.
Surgery and procedures
Surgical procedures include:
- Percutaneous mechanical thrombectomy is a procedure in which a thin, flexible tube is used to help break up, dissolve or suck out a blood clot.
- Surgical venous thrombectomy is a more invasive surgical procedure used to grab and remove the blood clot.
- An inferior vena cava filter is an implanted device to help capture or filter blood clots before they can reach the heart or lungs.
After treatment, your vascular surgeon will monitor you to reduce the chances that you’ll develop another DVT. You can help prevent another blood clot by:
- Attending all your follow-up visits and having follow-up blood tests and ultrasound scans
- Taking medications as directed
- Wearing compression stockings if your provider recommends doing so
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