Deep vein thrombosis — commonly called DVT — occurs when a blood clot forms in one of the deep veins of your body, usually in the leg. While the condition may seem minor at first, an untreated DVT can travel to the lungs and cause a pulmonary embolism, which is a potentially fatal medical emergency.
What Causes DVT?
DVT develops when blood flow slows down or becomes sluggish, when the blood itself becomes more prone to clotting, or when the lining of a vein is damaged. Several factors can trigger these conditions.
- —Prolonged immobility — long flights, car rides, or bed rest after surgery
- —Recent surgery, especially hip or knee replacement
- —Cancer and certain cancer treatments
- —Pregnancy and the postpartum period
- —Hormonal birth control or hormone replacement therapy
- —Inherited clotting disorders (thrombophilia)
- —Obesity
- —Previous history of DVT or pulmonary embolism
- —Age over 60
Recognizing the Symptoms
Many people with DVT have no symptoms at all — which is exactly what makes it dangerous. When symptoms do appear, they typically affect one leg and may include:
- —Swelling in the leg, ankle, or foot
- —Pain or tenderness, often described as a cramp or soreness
- —Redness or discoloration of the skin
- —A feeling of warmth in the affected area
- —Skin that looks shiny or appears stretched over the swollen area
If you develop sudden shortness of breath, chest pain, or cough up blood, call 911 immediately. These can be signs that a clot has reached your lungs.
How Is DVT Diagnosed?
The gold-standard test for DVT is a venous duplex ultrasound — a non-invasive, painless scan that uses sound waves to visualize blood flow through your veins. The technologist can identify clots, assess their size, and determine whether they are old or new. Results are available the same day.
Blood tests such as a D-dimer can suggest the possibility of a clot, but they are not specific enough to confirm DVT on their own. Ultrasound remains the definitive diagnostic tool.
Why Prompt Testing Matters
The window between DVT onset and a serious complication can be short. Waiting days or weeks for an imaging appointment — or spending hours in an emergency room — is not always necessary. Same-day venous duplex ultrasound can rule in or rule out a clot within 20 to 45 minutes, allowing your doctor to start treatment immediately if needed.
If you have a swollen, painful leg and any of the risk factors listed above, do not wait. Same-day DVT testing is available at Heartwell STAT Imaging — no ER visit required.
Treatment Options
Once DVT is confirmed, treatment typically involves anticoagulant medications (blood thinners) to prevent the clot from growing and to reduce the risk of new clots. In most cases, treatment can be managed outpatient. Compression stockings may also be prescribed to reduce swelling and the long-term risk of post-thrombotic syndrome.
Early detection gives physicians more treatment options and better outcomes. The sooner a clot is identified, the sooner it can be managed before complications arise.