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Chapter 15: Problem 82

Which of the following medical problems is more likely to occur? a. An artery might collapse because of lower blood pressure at the stenosis. b. An artery might burst because of higher blood pressure at the stenosis. c. Neither; pressure at the stenosis is the same as in the surrounding artery.

Short Answer

Expert verified
The most likely medical problem to occur is: An artery might collapse because of lower blood pressure at the stenosis.

Step by step solution

01

- Understanding Blood Pressure

Blood pressure is the force exerted by circulating blood on the walls of blood vessels. It is usually higher in the arteries and lower in the veins. In a normal scenario, blood pressure helps in maintaining the efficient functioning of the circulatory system. However, when an artery develops a stenosis, this can change.
02

- Assessing the Conditions at the Stenosis

While it might seem logical to think that the pressure would decrease at the site of narrowing, the reality is different. According to Bernoulli's principle, as the speed of a moving fluid (in this case, blood) increases, its pressure decreases. Hence, in a narrowed region, the blood flow speed increases to maintain the flow rate, causing the pressure to drop. This potentially negates the idea of an artery bursting due to higher pressure at the stenosis.
03

- Selecting the Most Likely Scenario

Combining the understanding of blood pressure and our evaluation of the conditions at the site of stenosis, it becomes apparent that the most likely situation is the one where an artery could potentially collapse because of lower blood pressure at the stenosis. This outcome requires careful consideration because it can lead to serious health implications.

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