A blood gerean that forms inside one of your veins or arteries is referred to as a thrombus. A thrombus might also kind in her heart.

A thrombus or embolus have the right to partly or totally block the flow of blood in a blood vessel.

You are watching: Is a blood clot attached to the interior wall of a vein or artery.

A blockage in one artery might prevent oxygen from getting to the tissues in that area. This is called ischemia. If ischemia is not treated promptly, it deserve to lead to tissue damage or death.A blockage in the vein will certainly often cause fluid buildup and swelling.


Situations in i beg your pardon a blood clot is an ext likely to kind in veins include:

Being on irreversible bed restSitting for long periods, such as in a aircraft or carDuring and after pregnancyTaking birth manage pills or estrogen hormone (especially in women that smoke)Long-term use of an intravenous catheter after surgery

Blood clots are also much more likely to kind after one injury. People with cancer, obesity, and liver or kidney disease are additionally prone come blood clots.

Smoking also increases the danger of forming blood clots.

Conditions that room passed down through households (inherited) might make you an ext likely to type abnormal blood clots. Inherited problems that affect clotting are:

Factor V Leiden mutationProthrombin G20210A mutation

Other rare conditions, such as protein C, protein S, and antithrombin III deficiencies.

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

Heart (angina or a heart 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: an easy Principles and Practice. 7th ed. Philadelphia, PA: Elsevier; 2018:chap 140.

Schafer AI. Technique to the patient v bleeding and 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 & study Institute, Wellington, FL. Review listed by VeriMed health care Network. Likewise reviewed by David Zieve, MD, MHA, clinical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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