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What is the most likely consequnce of a paradoxical embolism? a. Pulmonary infarct b. Pulmonary saddle...

What is the most likely consequnce of a paradoxical embolism?

a. Pulmonary infarct

b. Pulmonary saddle embolism

c. Heart failure

d. Cerebral infarct

​I thought it was pulmonary saddle embolism but I was confused

Solutions

Expert Solution

The answer is (d.) Cerebral infarct

A paradoxical embolism, also called a crossed embolism, refers to an embolus which is carried from the venous side of circulation to the arterial side, or vice versa. It is a kind of stroke or other form of arterial thrombosis caused by embolism of a thrombus (blood clot), air, tumor, fat, or amniotic fluid of venous origin, which travels to the arterial side through a lateral opening in the heart, such as a patent foramen ovale, or arteriovenous shunts in the lungs.

A cerebral infarction is an area of necrotic tissue in the brain resulting from a blockage or narrowing in the arteries supplying blood and oxygen to the brain. The restricted oxygen due to the restricted blood supply causes an ischemic stroke that can result in an infarction if the blood flow is not restored within a relatively short period of time. The blockage can be due to a thrombus, an embolus or an atheromatous stenosis of one or more arteries.[1] Which arteries are problematic will determine which areas of the brain are affected (infarcted). These varying infarcts will produce different symptoms and outcomes. About one third will prove fatal.

An embolic stroke refers to the blockage of an artery by an embolus, a traveling particle or debris in the arterial bloodstream originating elsewhere. An embolus is most frequently a thrombus, but it can also be a number of other substances including fat (e.g. from bone marrow in a broken bone), air, cancer cells or clumps of bacteria (usually from infectious endocarditis). The embolus may be of cardiac origin due to Atrial fibrillation, Patent foramen ovale or from atherosclerotic plaque of another (or the same) large artery


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