Up to 900,000 people in the United States are affected by blood clots each year.

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About half of all blood clots occur during a hospital stay or within 3 months of a hospital stay or surgery.

Roughly 1 out of 10 hospital deaths are related to blood clots in the lung.
Don’t let that one person be you.

Heading to the Hospital?
Get Better. Don’t Get a Blood Clot.

Spending time in the hospital is always a challenge and requires that you seek the best care. The last thing you need is another health problem or setback on your road to recovery.

It is important to know that being in the hospital places you at increased risk for the development of a deadly blood clot, particularly if you are dealing with surgery, a physical trauma, or a serious illness like cancer.

Blood clots occur most often in the legs or arms.
A blood clot in your leg or arm can travel to your lungs, which can be deadly.

Get the Facts

About half of all blood clots occur during or within 3 months of a hospital stay or surgery
Many of these blood clots can be safely prevented
Nearly half of all hospital patients do not receive proper prevention measures

Click on the image to view and share an infographic about blood clots and hospitalization, surgery, and physical trauma.


Watch this short video to learn how hospitalization can put you at risk for a deadly blood clot.

Hospitalization Risks

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Injury to a vein that may be caused by a broken bone, muscle injury, or other serious injury to the body.

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Major surgery, particularly of the pelvis, abdomen, hip, or knee.

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Confined to a bed or wheelchair for long periods of time due to a hospital stay, injury, or illness.


• Pregnancy • Cancer and its treatment • Personal or family history of blood clots • Birth control or hormone therapy with estrogen
• Smoking • Overweight • Age 55 or older • Long-term diseases such as heart and lung conditions, or diabetes

Heading to the Hospital?

Know Your Risks

Click on the image below to download a list of factors that can help you and your doctor determine your blood clot risk.

Have a Plan

Blood clots can be prevented.
They are a leading cause of preventable hospital death in the United States.
Make sure all of your doctors know your risk for blood clots and ask for a prevention plan.

Before you enter the hospital. Discuss your personal and family risks for blood clots with your doctor. Ask if yo uwill ned prevention measures for blood clots while in the hospital.
Before you leave the hospital. Ask your doctor what to do once you get home to prevent blood clots. Discuss the signs and symptoms of blood clots and make sure you know what to do if you experience them.
When you return home. Follow instructions, take medications as prescribed. Get up, walk around. If confined to bed or a wheelchair, have someone help you move your arms and legs.

You may still be at risk for a blood clot for 90 days after you leave the hospital.

Tell your doctor if you experience any of the signs or symptoms of a blood clot.



– Swelling –
– Pain or tenderness not caused by injury –
– Skin that is warm to the touch –
– Redness or discoloration of the skin –

If you have these signs or symptoms, alert your doctor as soon as possible.



– Difficulty breathing –
– Chest pain that worsens with a deep breath –
– Coughing, coughing up blood –
– Faster than normal or irregular heartbeat –

Seek immediate attention if you experience these signs or symptoms.

Stop the Clot, Spread the Word®

The National Blood Clot Alliance and the Centers for Disease Control and Prevention are working on this important public health campaign to get the word out about blood clot risks and the signs and symptoms of blood clots.

You can be an important part of this education campaign by helping us


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The information and materials on this site are provided for general information purposes only. You should not rely on the information provided as a substitute for actual professional medical advice, care, or treatment. This site is not designed to and does not provide medical advice, professional diagnosis, opinion, treatment, or services to you or any individual. If you believe you have a medical emergency, call 911 immediately.

Stop the Clot, Spread the Word® is a public education campaign made possible by funding provided to the National Blood Clot Alliance by the Centers for Disease Control and Prevention under Cooperative Agreement number 1U27DD001153-02.

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The mark ‘CDC’ is owned by the US Dept. of Health and Human Services and is used with permission. Use of this logo is not an endorsement by HHS or CDC of any particular product, service, or enterprise.