Blood clots are clumps that occur when blood hardens from a liquid to a solid.
A thrombus or embolus can partly or completely block the flow of blood in a blood vessel.
Clot; Emboli; Thrombi; Hypercoagulable state
Situations in which a blood clot is more likely to form in veins include:
Blood clots are also more likely to form after an injury. People with cancer, obesity, and liver or kidney disease are also prone to blood clots.
A buildup of cholesterol that narrows an artery may change or slow the flow of blood, making it easier for a blood clot or thrombus to form.
Conditions that are passed down through families (inherited) may make you more likely to form abnormal blood clots. Inherited conditions that affect clotting are:
A blood clot may block an artery or vein in the heart, affecting the:
Schafer AI. Thrombotic disorders: hypercoagulable states. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 176.