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Blood clot formation

Blood clots

Primary or secondary fibrinolysis

Definition:

Fibrinolysis is a normal body process that keeps naturally-occurring blood clots from growing and causing problems.

Primary fibrinolysis refers to the normal breakdown of clots.

Secondary fibrinolysis is the breakdown of blood clots due to a medical disorder, medicine, or other cause.

Alternative Names: Fibrinolysis

Causes, incidence, and risk factors:

Blood clots form on a protein called fibrin. The breakdown of fibrin (fibrinolysis) can increase under certain conditions, such as:

Bacterial infections
Intense exercise
Low blood sugar
Not enough oxygen to tissues

In some situations, doctors may wish to speed up the rate of fibrinolysis. For example, when an abnormal clot forms in the blood vessels of the heart and results in a heart attack, man-made fibrinolytic substances (such as tPA, streptokinase, or Retavase) may be given to break up the clot.

Symptoms:

Signs and tests:

Treatment:

Support Groups:

Expectations (prognosis):

Complications:

Calling your health care provider:

Prevention:

Review Date: 3/24/2008
Reviewed By: Stephen Grund, MD, PhD, Chief of Hematology/Oncology and Director of the George Bray Cancer Center at New Britain General Hospital, New Britain, CT. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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