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How can blood clots happen?

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Surgery is one of the major causes of deep vein thrombosis, a blood clot that forms in the deep veins of your body, often in your leg. Clots happen when blood thickens and sticks together. That can be a good thing when it prevents you from bleeding, but not so much when a clot forms inside your blood vessels. Sometimes, one can travel to your lungs. This is called a pulmonary embolism, and it can be life-threatening if it blocks blood flow.

From: Blood Clots After Surgery WebMD Medical Reference

SOURCES:

Mayo Clinic: "Pulmonary Embolism: Symptoms and Causes."

OrthoInfo: "Deep Vein Thrombosis."

UCSF, Department of Surgery: "Deep Vein Thrombosis."

CDC: "Venous Thromboembolism (Blood Clots): Facts."

American Society of Hematology: "Blood Clots."

National Heart, Lung, and Blood Institute: "Who is at Risk for Deep Vein Thrombosis?" "What Causes Deep Vein Thrombosis?"

York Teaching Hospital: "Deep Vein Thrombosis (DVT) and Warfarin: A Guide to Your Diagnosis and Treatment Information for Patients, Relatives, and Carers."

Reviewed by James Beckerman on July 5, 2017

SOURCES:

Mayo Clinic: "Pulmonary Embolism: Symptoms and Causes."

OrthoInfo: "Deep Vein Thrombosis."

UCSF, Department of Surgery: "Deep Vein Thrombosis."

CDC: "Venous Thromboembolism (Blood Clots): Facts."

American Society of Hematology: "Blood Clots."

National Heart, Lung, and Blood Institute: "Who is at Risk for Deep Vein Thrombosis?" "What Causes Deep Vein Thrombosis?"

York Teaching Hospital: "Deep Vein Thrombosis (DVT) and Warfarin: A Guide to Your Diagnosis and Treatment Information for Patients, Relatives, and Carers."

Reviewed by James Beckerman on July 5, 2017

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