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Blockage of arteries that supply arms or legs may result in necrosis and gangrene [1] Temporary or permanent decrease or loss of other organ functions [ 2 ] In septic embolism , there can be infection of the affected tissue or even septic shock, potentially leading to gangrene and sepsis [ 2 ]
Arteries may be blocked by intravascular fat aggregation. Platelets accumulate in the vicinity of bubbles. Endothelial damage may be a mechanical effect of bubble pressure on the vessel walls, a toxic effect of stabilised platelet aggregates and possibly toxic effects due to the association of lipids with the air bubbles. [ 66 ]
In the absence of an ST elevation, a non-ST elevation MI, known as an NSTEMI, or an unstable angina may be presumed (both of these are indistinguishable on initial evaluation of symptoms). ST elevations indicate a completely blocked artery needing immediate reperfusion. In NSTEMI the blood flow is present but limited by stenosis.
Pulmonary embolism (PE) is a blockage of an artery in the lungs by a substance that has moved from elsewhere in the body through the bloodstream . [6] Symptoms of a PE may include shortness of breath, chest pain particularly upon breathing in, and coughing up blood. [1]
Peripheral artery disease (PAD) is a form of peripheral vascular disease. Vascular refers to both the arteries and veins within the body. PAD differs from peripheral veinous disease. PAD means the arteries are narrowed or blocked—the vessels that carry oxygen-rich blood as it moves away from the heart to other parts of the body.
Coronary artery disease is characterized by heart problems that result from atherosclerosis. [34] Atherosclerosis is a type of arteriosclerosis which is the "chronic inflammation of the arteries which causes them to harden and accumulate cholesterol plaques (atheromatous plaques) on the artery walls". [35]
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