How Is Deep Vein Thrombosis Treated?
Goals of Treatment
The main goals of treating deep vein thrombosis
(DVT) are to:
- Stop the blood clot from getting bigger
- Prevent the blood clot from breaking off and
moving to your lungs
- Reduce your chance of having another blood clot
Medicines are used to prevent and treat DVT.
Anticoagulants (AN-te-ko-AG-u-lants) are the most
common medicines for treating DVT. They're also known as blood thinners.
These medicines decrease your blood's ability to
clot. They also stop existing blood clots from getting bigger. However, blood
thinners can't break up blood clots that have already formed. (The body
dissolves most blood clots with time.)
Blood thinners can be taken as either a pill, an
injection under the skin, or through a needle or tube inserted into a vein
(called intravenous, or IV, injection).
Warfarin and heparin are two blood thinners used to
treat DVT. Warfarin is given in pill form. (Coumadin® is a
common brand name for warfarin.) Heparin is given as an injection or through an
IV tube. There are different types of heparin. Your doctor will discuss the
options with you.
Your doctor may treat you with both heparin and
warfarin at the same time. Heparin acts quickly. Warfarin takes 2 to 3 days
before it starts to work. Once the warfarin starts to work, the heparin is
Pregnant women usually are treated with heparin
only, because warfarin is dangerous during pregnancy.
Treatment for DVT with blood thinners usually lasts
from 3 to 6 months. The following situations may change the length of
- If your blood clot occurred after a short-term
risk (for example, surgery), your treatment time may be shorter.
- If you've had blood clots before, your treatment
time may last longer.
- If you have certain other illnesses, such as
cancer, you may need to take blood thinners for as long as you have the
The most common side effect of blood thinners is
bleeding. This happens if the medicine thins your blood too much. This side
effect can be life threatening.
Sometimes, the bleeding is internal (inside your
body). People treated with blood thinners usually receive regular blood tests
to measure their blood's ability to clot. These blood tests are called PT and
These tests also help your doctor make sure you're
taking the right amount of medicine. Call your doctor right away if you have
easy bruising or bleeding. This may be a sign that your medicines have thinned
your blood too much.
These medicines interfere with the blood clotting
process. They're used to treat blood clots in patients who can't take heparin.
These medicines are given to quickly dissolve a
blood clot. They're used to treat large blood clots that cause severe symptoms.
Because thrombolytics can cause sudden bleeding,
they're used only in life-threatening situations.
Other Types of Treatment
Vena Cava Filter
A vena cava filter is used if you can't take blood
thinners or if you're taking blood thinners and still developing blood clots.
The filter is inserted inside a large vein called
the vena cava. The filter catches blood clots that break off in a vein before
they move to the lungs. This prevents
embolism. However, it doesn't stop new blood clots from forming.
Graduated Compression Stockings
These stockings can reduce the swelling that may
occur after a blood clot has developed in your leg. Graduated compression
stockings are worn on the legs from the arch of the foot to just above or below
These stockings are tight at the ankle and become
looser as they go up the leg. This creates gentle pressure up the leg. The
pressure keeps blood from pooling and clotting.
These stockings should be worn for at least a year
after DVT is diagnosed.