The nurse is educating a group of clients on how high cholesterol leads to heart disease.
Which explanation regarding high cholesterol is most appropriate?
it binds to vessel walls, decreasing the amount of blood getting to the heart
it damages the heart muscle
it thickens the blood, causing clots.
it interferes with the conduction system of the heart.
The Correct Answer is A
A. High cholesterol can lead to the buildup of plaque in the arteries, which can narrow the blood vessels and decrease blood flow to the heart, increasing the risk of heart disease.
B. High cholesterol does not directly damage the heart muscle but can contribute to conditions like atherosclerosis, which can affect heart function.
C. High cholesterol does not directly thicken the blood but can contribute to the formation of blood clots when combined with other factors.
D. High cholesterol does not typically interfere with the conduction system of the heart but can contribute to conditions like coronary artery disease.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Organic nitrates, such as nitroglycerin, dilate (widen) veins and coronary arteries, leading to decreased preload and afterload, which helps relieve angina pain.
B. Constricting veins and coronary arteries would exacerbate angina symptoms by reducing blood flow to the heart muscle.
C. Dissolving veins and coronary arteries is not a mechanism of action for organic nitrates in the treatment of angina.
D. Dilating veins and coronary arteries is the primary mechanism of action for organic nitrates, resulting in increased blood flow to the heart muscle and relief of angina pain.
Correct Answer is D
Explanation
A. Fibric acids are a different class of lipid-lowering agents.
B. Bile acid resins are another class of drugs used to lower cholesterol but work differently.
C. Omega-3 fatty acids are used to lower triglycerides and improve heart health but are not HMG-CoA reductase inhibitors.
D. Statins are drugs that inhibit the enzyme HMG-CoA reductase, which is crucial in the synthesis of cholesterol, thereby lowering cholesterol levels.
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