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Embolism

Definition

• An embolism is a total or partial blockage of a blood vessel that impedes or stops blood flow. The blockage can be caused by a blood clot, bacteria, air, parasites, bone marrow (from breakage of a major bone) or other bodily or foreign materials.

  Embolisms can be life-threatening conditions. For example, if a blood clot travels to the heart and blocks blood flow in the vessels supplying the heart muscles, the result could be a fatal heart attack. If this happens in the brain, the result could be a stroke (also called a "brain attack").

Additional Info

A pulmonary embolism is an embolism that occurs in the lung. These are not uncommon in a condition called deep vein thrombosis (DVT) in which blood clots that form in the vessels of the groin or leg break free and travel to the lungs. If left untreated (by blood thinning medications such as coumarin, for example), a pulmonary embolism can be fatal.

A thrombosis is a blood clot inside a blood vessel. If it breaks free and creates an obstruction it is then called an embolism.

MSDS Relevance

While symptoms of embolisms are often not noted by the victim, certain risk factors for pulmonary embolism are: Immobility for a long period. Having had surgery within the past month or two. Medical history of cancer or heart disease. Deep venous thrombosis. Previous pulmonary embolisms. Pregnancy or use of estrogen.estrogen. Hypercoagulability (tendency to clot easily). Embolisms can form due to trauma (damage) to the body. For example, a bullet, bone marrow or amniotic fluid could work its way into a blood vessel during an accident and cause an embolism. This term is not commonly found on MSDS's, although we have seen on a few MSDS's, such as those for estrogens or estrogen mimics, that warn of embolisms as possible health hazards.

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Additional Reading

• The 5 Kinds of Embolisms at Queen's University Belfast.
• Are You At Risk for Deep Vein Thrombosis? at the US Centers for Disease Control and Prevention (CDC).
• What Is Pulmonary Embolism? at the NIH's National Heart, Lung, and Blood Institute.
• Arterial embolism (with illustrations) and Pulmonary Embolism at the NIH's MedLine Plus Medical Encyclopedia.

See also: Respiratory system.

Additional definitions from Google and OneLook.

Disclaimer: The information contained herein is believed to be true and accurate, however ILPI makes no guarantees concerning the veracity of any statement. Use of any information on this page is at the reader's own risk. ILPI strongly encourages the reader to consult the appropriate local, state and federal agencies concerning the matters discussed herein.