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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
  • 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, human-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

References

Schafer AI. Hemorrhagic disorders: Disseminated intravascular coagulation, liver failure, and vitamin K deficiency. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 181.

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