Deep Vein Thrombosis (DVT)
Deep vein thrombosis is a blood clot in one of the deep veins, usually in the leg, and it can be life-threatening if a piece breaks free and travels to the lungs. At MVM, we diagnose DVT quickly, start the right treatment, and follow patients to prevent long-term complications.
What is deep vein thrombosis?
Deep vein thrombosis (DVT) is a blood clot that forms inside one of the deep veins, most often in the calf, thigh, or pelvis. Unlike a clot in a surface vein, a DVT sits inside a major channel that returns blood to the heart, which makes it dangerous on two counts.
First, the clot itself blocks blood flow and causes leg swelling, pain, and warmth. Second, a piece of the clot can break off and travel through the bloodstream to the lungs. That is called a pulmonary embolism (PE), and it is a medical emergency.
DVT often happens after periods of immobility, surgery, hospitalization, long flights, or extended bed rest. Hormonal factors, pregnancy, certain cancers, and inherited clotting disorders also play a role. With prompt diagnosis and the right anticoagulation, most DVTs are treated successfully on an outpatient basis.
A cramp, or a clot?
A clot in a deep vein often feels like a pulled muscle or a charley horse. That is exactly why it gets ignored, and there is no way to tell the two apart for certain at home. But the patterns differ, and the difference is worth knowing.
A strain or a cramp usually has a cause you can name, a workout, an awkward step, a long day on your feet. It hurts in one spot, eases over a day or two, and does not swell the whole limb.
A clot more often swells the whole calf or leg rather than hurting in one place. It affects one leg and not the other, brings warmth or a change in skin color with it, and builds over hours to days rather than arriving in an instant. It frequently follows surgery, illness, a long flight, or a stretch of being off your feet.
If one leg is swollen and painful (particularly with warmth or redness, or after recent surgery, immobility or a long flight) have it checked the same day rather than waiting to see whether it settles. An ultrasound answers the question in minutes.
Call 911 or go to the nearest emergency room for sudden shortness of breath, chest pain, or coughing up blood. Those can mean a clot has reached the lungs.
Common DVT symptoms.
DVT typically affects one leg. Some clots are silent, meaning they cause no symptoms, and are discovered only after a more serious complication.
- Swelling in one leg, usually the calf or thigh
- Pain or tenderness, often described as a cramp or charley horse
- Warmth over the affected area
- Redness or discoloration of the skin
- A heavy or aching feeling in the leg
- Visible distended surface veins
- Symptoms that worsen over hours to days rather than instantly
- Shortness of breath, chest pain, or coughing blood: possible signs the clot has reached the lungs (pulmonary embolism. This is an emergency)
Have the swelling looked at.
Leave your details and one of our team will call you back shortly to arrange your appointment.
Who is most at risk.
- Recent surgery, especially orthopedic, abdominal, or pelvic
- Prolonged immobility: hospitalization, long flights, or extended bed rest
- Active cancer or recent chemotherapy
- Pregnancy and the postpartum period
- Estrogen-containing contraceptives or hormone replacement therapy
- Prior DVT or pulmonary embolism
- Inherited clotting disorders (Factor V Leiden, prothrombin gene mutation, others)
- Obesity, smoking, age over 60
When to see a vascular specialist.
- New unilateral leg swelling, pain, or warmth, get evaluated within 24 hours
- A confirmed DVT diagnosis and questions about anticoagulation
- A prior DVT with persistent leg swelling or aching
- An unprovoked DVT that needs a deeper workup
- A history of recurrent clots
Call 911 or go to the nearest emergency room immediately if you have sudden shortness of breath, chest pain, fast heart rate, lightheadedness, or coughing blood. These can be signs of a pulmonary embolism, a life-threatening complication of DVT.
How MVM treats DVT.
Patients and referring physicians choose MVM for DVT because we move fast when a clot is suspected and stay engaged for the months of careful follow-up that determine long-term outcome.
- Urgent evaluation for suspected DVT: this isn't something we make patients wait for.
- In-office venous duplex ultrasound. The gold-standard test for DVT, performed at the first visit when clinically possible.
- Anticoagulation management. Modern direct oral anticoagulants (DOACs) or warfarin, started immediately when a DVT is confirmed and adjusted as your case evolves.
- Risk-factor workup. We look for what caused the clot, recent surgery, immobility, hormone exposure, malignancy screening when appropriate, and inherited clotting disorders in selected cases.
- Post-DVT vein follow-up. Many DVT patients develop chronic venous insufficiency months or years later. We follow them so it's caught and treated.
- One team, full continuum. The team that diagnoses you also manages your anticoagulation and follow-up.
How we diagnose DVT at MVM.
Most patients leave their first visit with a definitive answer, clot present or not, and a plan.
- Focused history and exam: including review of recent surgery, immobility, and family history
- Clinical risk score (Wells score) to estimate pre-test probability
- D-dimer blood test when appropriate: helps rule out DVT in low-risk patients
- Venous duplex ultrasound: the gold-standard test, performed in our office
- CT venography or MR venography: for pelvic or central vein clots when ultrasound is limited
- Hypercoagulability workup: in selected unprovoked or recurrent cases
Treatment options.
The goal of DVT treatment is to stop the clot from growing, prevent it from breaking off, and let the body break it down over time. Most DVT is managed as an outpatient with anticoagulation alone.
Anticoagulation
Modern direct oral anticoagulants (DOACs) (apixaban, rivaroxaban, dabigatran, or edoxaban) have largely replaced warfarin for most DVT patients. Duration of treatment is typically 3 months for a provoked clot, and may be longer or indefinite for unprovoked clots, recurrent clots, or ongoing risk factors. We review the plan with you and adjust as your situation evolves.
Procedures for selected cases
Most DVT is treated with medication alone. Procedures are reserved for specific high-risk situations:
- Catheter-directed thrombolysis: for extensive iliofemoral clots threatening limb viability
- Mechanical thrombectomy: physically removes large, fresh clots in selected patients
- Inferior vena cava (IVC) filter: for patients who can't take anticoagulation safely
- Iliofemoral venous obstruction treatment: when a clot leaves behind chronic narrowing in the deep pelvic veins, venous stenting can restore normal blood return from the leg and reduce long-term swelling, pain, and skin damage
Recovery and long-term care
Most patients improve significantly within the first 1–2 weeks on anticoagulation. Compression stockings help reduce swelling and may lower the risk of post-thrombotic syndrome, a long-term condition in which the leg remains swollen, achy, and prone to skin damage after a DVT. We follow patients for at least the first year and screen for chronic venous insufficiency as it develops.
DVT FAQs.
How long will I be on blood thinners after a DVT?
It depends on the cause. A clot triggered by a clear, temporary risk factor (such as surgery) is typically treated for 3 months. An unprovoked clot or recurrent DVT often warrants longer or indefinite anticoagulation. We review and revisit the plan with you.
Can a DVT come back?
Yes. Recurrence risk is highest in the first year and is higher for unprovoked clots, ongoing cancer, or inherited clotting disorders. Long-term follow-up and, in many cases, extended anticoagulation lower that risk substantially.
Will I have leg swelling forever?
Not for most patients. With anticoagulation and compression, swelling typically improves dramatically over the first few months. A subset of patients develop post-thrombotic syndrome, chronic swelling and heaviness, which can also be managed with compression and vein-focused care.
Can I fly with a DVT?
Once you're stable on anticoagulation, generally yes. The acute phase is different, we usually want patients on treatment for at least a few days before extended travel. We'll guide you based on your specific case.
Does a DVT mean I'm at risk for stroke or heart attack?
DVT is a different kind of clot than what causes most heart attacks or strokes, and the two systems are mostly distinct. That said, DVT can identify patients who need a broader vascular assessment, particularly if there's been an unprovoked or recurrent event.
Schedule a DVT consultation.
Suspected DVT is seen urgently. Bring your medication list, any prior imaging, and a timeline of when leg symptoms started.
Schedule a consultationSend us a DVT referral.
Suspected acute DVT is moved to the front of the schedule, and confirmed cases needing anticoagulation management or post-thrombotic care are followed closely. We send the consult note back to your office promptly.
Referral process