Term
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Definition
| a detached intravascular solid, liquid, or gaseous mass that is carried by the blood to a site distant from its point of origin. 99% of all emboli arise in thrombi(thromboembolism). |
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Term
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Definition
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Term
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Definition
| Thrombi from DVT fragments are carried through the heart to the pulmonary vasculature. third most common acute cause of death in the United States (follows heart attacks and strokes). Over 95% arise in thrombi within the large deep veins of the lower legs. |
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Term
| Clinical Significance of Pulmonary Embolism |
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Definition
| patients who've had one PE are at risk for another |
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Term
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Definition
| refers to emboli that travel through the arterial circulation. 80 to 85% arise from thrombi within the heart. The major sites of lodgment are the lower extremities (70 to 75%), the brain (10%), visceral arteries (10% - includes mesenteric, renal, and splenic), and the upper limbs (7 to 8%). |
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| Clinical Significance of systemic embolism |
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Definition
| most common form of emboli |
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Term
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Definition
| occurs in persons exposed to sudden changes in atmospheric pressure. When air is breathed under high pressure, increased amounts of the inspired gases dissolve in the blood, tissues, and fat.(Nitrogen is very soluble in fat.) If the individual decompresses too quickly the dissolved oxygen, carbon dioxide, and nitrogen will come out of solution as minute bubbles. The oxygen and carbon dioxide will be rapidly reabsorbed, but the nitrogen, which has low fluid solubility, may remain as tiny bubbles or may coalesce to form large masses of gas within the blood vessels and tissues. |
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Term
| Clinical Significance of Air/Gas Embolism |
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Definition
| neurosurgery performed in the sitting position can occlude flow, scuba diving "the bends", acute decompression sickness |
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Definition
| follows fracture of bones containing fatty marrow, or after severe trauma to adipose tissue. |
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| Clinical Significance of Fat Embolism |
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Definition
| can be fatal in 10% of cases |
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Term
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Definition
| components of amniotic fluid(epithelial squames, vernix caseosa, and sometimes mucus and lanugo hairs) enter the maternal circulation. |
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Term
| Clinical Significance of Amniotic Fluid Embolism |
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Definition
| uncommon, grave complication of labor, mortality rate is 80% for mothers, most common cause of maternal death |
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Term
| The most common source of a pulmonary embolism is |
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Definition
| Deep Vein Thrombosis proximal to the popliteal fossa |
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Term
| The most common source of a systemic embolism is |
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Definition
| intracardiac mural thrombi |
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