A 60-year-old male presents to his primary care provider reporting chest pain. He is diagnosed with atherosclerosis. This disease results in:
Abnormally dilated arteries and veins
Arterial wall thinning and weakening
Autonomic nervous system imbalances
Abnormal thickening and hardening of vessel walls
The Correct Answer is D
Choice A reason: Abnormally dilated arteries and veins are not a result of atherosclerosis. They are a sign of aneurysms or varicose veins, which are caused by different factors.
Choice B reason: Arterial wall thinning and weakening are not a result of atherosclerosis. They are a sign of arteriosclerosis, which is a general term for the loss of elasticity and flexibility of the arteries.
Choice C reason: Autonomic nervous system imbalances are not a result of atherosclerosis. They are a sign of dysautonomia, which is a disorder of the nervous system that affects the regulation of vital functions.
Choice D reason: Abnormal thickening and hardening of vessel walls are a result of atherosclerosis. They are caused by the accumulation of plaque, which is composed of cholesterol, fatty substances, calcium, and other materials.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason: Montelukast does not increase vessel permeability. It blocks the effects of leukotrienes, which are inflammatory mediators that cause vessel permeability, bronchoconstriction, and mucus secretion. By blocking leukotrienes, montelukast reduces vessel permeability and inflammation.
Choice B reason: Montelukast reduces bronchoconstriction and mucus secretion. It blocks the effects of leukotrienes, which are inflammatory mediators that cause bronchoconstriction and mucus secretion. By blocking leukotrienes, montelukast improves airflow and reduces asthma symptoms.
Choice C reason: Montelukast does not increase inflammation. It blocks the effects of leukotrienes, which are inflammatory mediators that cause inflammation, bronchoconstriction, and mucus secretion. By blocking leukotrienes, montelukast reduces inflammation and prevents asthma exacerbations.
Choice D reason: Montelukast does not increase bronchoconstriction. It blocks the effects of leukotrienes, which are inflammatory mediators that cause bronchoconstriction, mucus secretion, and inflammation. By blocking leukotrienes, montelukast reduces bronchoconstriction and improves airflow.
Correct Answer is B
Explanation
Choice A reason: This is not the definition of ejection fraction. The percentage of blood that leaves the heart in a minute is related to the cardiac output, which is the product of the heart rate and the stroke volume.
Choice B reason: This is the correct definition of ejection fraction. It is the ratio of the stroke volume (the amount of blood pumped by the left ventricle) to the end-diastolic volume (the amount of blood in the left ventricle at the end of diastole). It is a measure of the efficiency of the heart and reflects the contractility of the cardiac muscle.
Choice C reason: This is not the definition of ejection fraction. The amount of blood that leaves the heart with each beat is the stroke volume, which is one of the factors that determine the ejection fraction.
Choice D reason: This is not the definition of ejection fraction. The amount of blood that leaves the heart in a minute is the cardiac output, which is influenced by the ejection fraction, but not equivalent to it.
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