A blood gerean that develops inside one of her veins or arteries is called a thrombus. A thrombus might also type in your heart.

A thrombus or embolus deserve to partly or fully block the flow of blood in a blood vessel.

You are watching: A clot in an unbroken vessel is called

A blockage in an artery may prevent oxygen from getting to the organization in that area. This is called ischemia. If ischemia is not treated promptly, it can lead come tissue damage or death.A blockage in the vein will certainly often cause fluid buildup and also swelling.


Situations in which a blood clot is more likely to kind in veins include:

Being on irreversible bed restSitting for long periods, such together in a plane or carDuring and after pregnancyTaking birth manage pills or estrogen hormone (especially in women who smoke)Long-term usage of one intravenous catheter after ~ surgery

Blood clots space also more likely to kind after one injury. Human being with cancer, obesity, and also liver or kidney an illness are likewise prone to blood clots.

Smoking likewise increases the risk of forming blood clots.

Conditions that room passed down through family members (inherited) may make you more likely to type abnormal blood clots. Inherited problems that impact clotting are:

Factor V Leiden mutationProthrombin G20210A mutation

Other rarely conditions, such together protein C, protein S, and also antithrombin III deficiencies.

A blood clot might block one artery or vein in the heart, affecting the:

Heart (angina or a love attack)Neck or mind (stroke)

Alternative Names

Clot; Emboli; Thrombi; Thromboembolus; Hypercoagulable state

Patient Instructions



Anderson JA, Hogg KE, Weitz JI. Hypercoagulable states. In: Hoffman R, Benz EJ, Silberstein LE, et al, eds. Hematology: simple Principles and also Practice. 7th ed. Philadelphia, PA: Elsevier; 2018:chap 140.

Schafer AI. Technique to the patient through bleeding and also thrombosis: hypercoagulable states. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 162.

Updated by: Todd Gersten, MD, Hematology/Oncology, Florida Cancer specialists & research Institute, Wellington, FL. Review listed by VeriMed health care Network. Additionally reviewed by David Zieve, MD, MHA, medical Director, Brenda Conaway, Editorial Director, and also the A.D.A.M. Editorial team.

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