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What causes blood clots?

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Waxy cholesterol plaques that form in arteries have substances that signal your body that you have broken skin or blood vessels. If the plaque breaks open, they'll start the clotting process. Most heart attacks and strokes happen when a plaque in your heart or brain suddenly bursts.

Blood clots can also form when your blood doesn't flow properly. If it pools in your blood vessels or heart, the platelets are more likely to stick together. Atrial fibrillation and deep vein thrombosis (DVT) are two conditions where slowly moving blood can cause clotting problems.

From: Blood Clots WebMD Medical Reference

SOURCES:

Merck Manual: "How Blood Clots."

World Federation of Hemophilia: "The clotting process."

American Stroke Association: "Anti-Clotting Agents Explained."

Lipe, B. , Oct. 4, 2011. Circulation

Furie, B. , 2008. New England Journal of Medicine

Hoffman, R. , 5th edition, Churchill Livingstone Elsevier, 2009. Hematology: Basic Principles and Practice

Fiumara, K. , 2009. Circulation

Reviewed by Louise Chang on January 9, 2018

SOURCES:

Merck Manual: "How Blood Clots."

World Federation of Hemophilia: "The clotting process."

American Stroke Association: "Anti-Clotting Agents Explained."

Lipe, B. , Oct. 4, 2011. Circulation

Furie, B. , 2008. New England Journal of Medicine

Hoffman, R. , 5th edition, Churchill Livingstone Elsevier, 2009. Hematology: Basic Principles and Practice

Fiumara, K. , 2009. Circulation

Reviewed by Louise Chang on January 9, 2018

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What drugs affect the clotting process?

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