How do you treat deep vein thrombosis of the left leg?

Deep vein thrombosis (DVT) is a blood clot that occurs in a deep vein; that is, a vein that is not on the surface of the skin. DVT can occur anywhere, but is most often seen in the leg.

If you think you might have DVT, see a doctor. The most serious complication of DVT is pulmonary embolism, which is when a piece of the blood clot breaks off and lodges in the lung. This causes a serious illness and is potentially life-threatening.

What are the symptoms of deep vein thrombosis (DVT)?

The main signs and symptoms of DVT are pain and swelling in the affected area - usually your calf or thigh.

Some people have no signs or symptoms.

When to seek help?

DVT is a serious condition, so if you think you may have DVT, you should see a doctor without delay.

Call an ambulance on triple zero (000) if you:

An illustration showing deep vein thrombosis.The main signs and symptoms of DVT are pain and swelling usually in the calf or thigh.

What causes DVT?

Anything that slows blood flow in deep veins can cause DVT.

People who have DVT may have:

Women who are pregnant or who have recently had a baby are also at increased risk of DVT. So are people who are overweight, or who smoke.

DVT can also happen spontaneously, with no apparent cause. Some people with spontaneous DVTs have a genetic condition that makes their blood more likely to clot.

How is a DVT diagnosed?

To diagnose DVT, the doctor will need to talk to you about your symptoms and examine you to look for signs of DVT, such as swelling and pain.

After this, if your doctor thinks you may have DVT, they may suggest you have an ultrasound. A blood test called a D-dimer test can also be done to help detect blood clots. If the doctor thinks there is a risk that part of the blood clot has travelled to your lungs, they may order a chest CT scan.

How is DVT treated?

If you have DVT, you will be treated with medicine that reduces blood clotting (called anticoagulant medication). This can be given either as tablets or via injections and you will probably need to take it for several months.

In very severe cases, a medicine is used to break down the clot. The person normally needs to stay in hospital when this is given as it can cause bleeding.

You may also be asked to wear compression stockings to bring down the swelling.

Bits of the blood clot can break off and travel around the body, affecting the heart or lungs.

After having a DVT, the leg can remain swollen and ulcers may develop.

How is DVT prevented?

If you are travelling or are hospitalised, you can reduce your risk of developing DVT by wearing compression stockings, moving your feet and legs as much as possible, and drinking plenty of water.

If you have already had a DVT, it is very important to quit smoking, keep fit and maintain a healthy weight. Some people may need to stay on low-dose anticoagulant medication long-term or use it prior to long haul flights.

If blood moves too slowly through your veins, it can cause a clump of blood cells called a clot. When a blood clot forms in a vein deep inside your body, it causes what doctors call deep vein thrombosis (DVT). This is most likely to happen in your lower leg, thigh, or pelvis. But it can occur in other parts of your body, too.

DVT can lead to major health problems. In some cases, it can be fatal. That’s why if you think you have one, you must see a doctor right away.

What Are the Signs?

Not everyone with DVT shows symptoms. But you might notice any of the following:

  • Leg or arm swelling that comes on without warning
  • Pain or soreness when you stand or walk
  • Warmth in the area that hurts
  • Enlarged veins
  • Skin that looks red or blue

If a blood clot breaks free and moves through your bloodstream, it can get stuck in a blood vessel of your lung. Doctors call this a pulmonary embolism, or PE. It can be fatal.

Some people don’t know they have DVT until this happens. Signs of PE include:

  • Shortness of breath
  • Chest pain that’s worse when you take a deep breath
  • Coughing up blood
  • Higher heart rate

DVT Causes and Risk Factors

Many things can raise your chances of getting DVT. Here are some of the most common:

  • Age. DVT can happen at any age, but your risk is greater after age 40.
  • Sitting for long periods. When you sit for long stretches of time, the muscles in your lower legs stay lax. This makes it hard for blood to circulate, or move around, the way it should. Long flights or car rides can put you at risk.
  • Bed rest, like when you’re in the hospital for a long time, can also keep your muscles still and raise your odds of DVT.
  • Pregnancy. Carrying a baby puts more pressure on the veins in your legs and pelvis. What’s more, a clot can happen up to 6 weeks after you give birth.
  • Obesity. People with a body mass index (BMI) over 30 have a higher chance of DVT. BMI is a measure of how much body fat you have, compared with your height and weight.
  • Serious health issues. Conditions like irritable bowel disease, cancer, and heart disease can all raise your risk.
  • Certain inherited blood disorders. Some diseases that run in families can make your blood thicker than normal or cause it to clot more than it should.
  • Injury to a vein. This could result from a broken bone, surgery, or other trauma.
  • Smokingmakes blood cells stickier than they should be. It also harms the lining of your blood vessels. This makes it easier for clots to form.
  • Birth control pills or hormone replacement therapy. The estrogen in these raises your blood’s ability to clot. (Progesterone-only pills don’t have the same risk.)
  • Infection in your blood, veins, or elsewhere could lead to DVT.
  • Inflammation. This could be due to infection, surgery, injury, or some other root cause.
  • High cholesterol.

In some cases, neither the cause nor the symptoms of DVT are very clear, so tell your doctor about any changes you notice if you are at higher risk for DVT.

How Is DVT Treated?

Your doctor will want to stop the blood clot from getting bigger or breaking off and heading toward your lungs. They’ll also want to cut your chances of getting another DVT.

This can be done in one of three ways:

  • Medicine.Blood thinners are the most common medications used to treat DVT. They cut your blood’s ability to clot. You may need to take them for 6 months. If your symptoms are severe or your clot is very large, your doctor may give you a strong medicine to dissolve it. These medications, called thrombolytics, have serious side effects like sudden bleeding. That’s why they’re not prescribed very often.
  • Inferior vena cava (IVC) filter. If you can’t take a blood thinner or if one doesn’t help, your doctor may insert a small, cone-shaped filter inside your inferior vena cava. That’s the largest vein in your body. The filter can catch a large clot before it reaches your lungs.
  • Compression stockings. These special socks are very tight at the ankle and get looser as they reach your knee. This pressure prevents blood from pooling in your veins. You can buy some types at the drugstore. But your doctor might prescribe a stronger version that can be fitted by an expert.

 

Can I Prevent DVT?

Simple lifestyle changes may help lower your odds of getting one. Try these simple tips to keep your blood circulating the way it should:

  • Take care of yourself. Stop smoking, lose weight, and get active.
  • Get regular checkups. And if your doctor has prescribed a medicine to control a health problem, take it as directed.
  • Don’t sit for too long. If you’re traveling for 4 hours or more, take breaks to flex and stretch your lower leg muscles. If you’re on a flight, walk up and down the aisle every hour. On long car drives, pull over every 2 hours to stretch. Wear loose-fitting clothes, and drink plenty of water.
  • Plan surgery after-care. Talk to your doctor about what you can do to prevent DVT after surgery. They might suggest you wear compression stockings or take blood thinners. You’ll also want to get out of bed and start moving around.

Complications and Prognosis

Up to half of people with DVT will have long-term complications because of damage to the leg vein (post-thrombotic syndrome) where blood remains too long (chronic venous insufficiency). You may notice pain, swelling, and redness, which can lead to open sores if you don’t get early treatment. In time, this can make it harder to do daily activities and even walk.

The biggest worry for a blood clot is a DVT that breaks off and causes a pulmonary embolism (see above). If the clot isn’t too big and you get the right treatment fast enough, you may recover from this, though there may be some long-term lung damage.

About a third of people who have had a DVT or PE have a higher risk of another incident.

Show Sources

SOURCES:

Cleveland Clinic: “Deep Vein Thrombosis (DVT).”

Mayo Clinic: “Deep Vein Thrombosis (DVT).”

National Heart, Lung, and Blood Institute: “Explore Deep Vein Thrombosis.”

Clot Connect/UNC Blood Clot Outreach Program: “Symptoms, Risk Factors and Prevention.”

University of Pittsburgh Medical Center (UPMC HealthBeat): “Could You Be at Risk of Developing Deep Vein Thrombosis (DVT)?”

American Heart Association: “Understand Your Risk for Excessive Blood Clotting.”

National Health Service (U.K.): “Causes of Deep Vein Thrombosis (DVT),” “Pregnancy and Baby: Deep Vein Thrombosis.”

University of Michigan Health System: “Inferior Vena Cava (IVC) Filters.”

Anderson, F., Audet, A. Best Practices: Preventing Deep Vein Thrombosis and Pulmonary Embolism: A Practical Guide to Evaluation and Improvement, Center for Outcomes Research: University of Massachusetts Medical School.

Can I get rid of deep vein thrombosis in my legs?

Treatment can include: Anticoagulants: The most common treatment for a blood clot is anticoagulants or blood thinners. They work by reducing the body's ability to form new clots and preventing existing clots from growing larger. Anticoagulants can be given in the form of pills or intravenous injections.

Is walking good for deep vein thrombosis?

Conclusions: Early walking exercise is safe in patients with acute DVT and may help to reduce acute symptoms. Exercise training does not increase leg symptoms acutely in patients with a previous DVT and may help to prevent or improve the postthrombotic syndrome.

Can a deep vein thrombosis go away on its own?

In deep vein thrombosis (DVT), the blood clot forms in one of the larger, deeper veins that run through the muscles. Deep vein thrombosis usually occurs in the lower leg. It often goes unnoticed and dissolves on its own. But it may cause symptoms like pain and swelling.

What happens if Deep vein thrombosis is left untreated?

If left untreated, the clot may become larger and cause significant swelling or pain in your arm or legs. An embolism can also break off and travel to your lungs, causing breathing difficulty, chest pain, and putting stress on your heart. We call this condition pulmonary embolism (PE).