ATI RN
Cardiovascular Drugs Quiz Questions
Question 1 of 5
Glucocorticoids are hormonal steroids:
Correct Answer: D
Rationale: Step 1: Glucocorticoids are a class of hormonal steroids. Step 2: They have important effects on intermediary metabolism, cardiovascular function, growth, and immunity. Step 3: Glucocorticoids also have salt-retaining activity. Step 4: Some glucocorticoids may exhibit androgenic or estrogenic activity. Therefore, the correct answer is D, as all the statements in choices A, B, and C are true regarding the characteristics of glucocorticoids. Choices A, B, and C are incorrect because glucocorticoids are not limited to just one specific function or activity.
Question 2 of 5
Hypovitaminosis is an insufficiency of one or more essential vitamins. This consideration is:
Correct Answer: A
Rationale: Step-by-step rationale for why choice A is correct: 1. Hypovitaminosis is defined as an insufficient level of essential vitamins in the body. 2. Therefore, it is true that hypovitaminosis represents an inadequacy of one or more essential vitamins. 3. This condition can lead to various health issues due to the deficiency of vital nutrients. 4. Choice B is incorrect as it contradicts the definition of hypovitaminosis. 5. Choices C and D are also incorrect as they do not accurately reflect the definition of hypovitaminosis.
Question 3 of 5
Which of the following enzymes improves GIT functions (replacement therapy):
Correct Answer: A
Rationale: The correct answer is A: Pepsin. Pepsin is an enzyme that aids in the digestion of proteins in the stomach, improving gastrointestinal (GIT) functions. It breaks down proteins into smaller peptides for absorption. Urokinase is a thrombolytic enzyme used to dissolve blood clots, not related to GIT functions. L-asparaginase is used in cancer treatment by depleting asparagine, not for GIT functions. Lydaze is an enzyme used to break down bacterial cell walls, also unrelated to GIT functions. Therefore, the correct choice is pepsin as it directly enhances GIT functions by aiding in protein digestion.
Question 4 of 5
This drug weakly stimulates synthesis of very low density lipoproteins (VLDL):
Correct Answer: A
Rationale: Correct Answer: A: Cholestyramine (Questran) Rationale: Cholestyramine is a bile acid sequestrant that indirectly stimulates VLDL synthesis by interrupting enterohepatic circulation. It binds bile acids in the intestine, leading to increased hepatic cholesterol conversion to bile acids. This triggers compensatory upregulation of hepatic LDL and VLDL synthesis. Summary of other choices: B: Lovastatin (Mevacor) - Inhibits HMG-CoA reductase, reducing cholesterol synthesis. C: Gemfibrozil (Lopid) - Increases lipoprotein lipase activity, reducing VLDL levels. D: Probucol (Lorelco) - Reduces VLDL synthesis by inhibiting cholesterol ester transfer protein.
Question 5 of 5
Correct statements about alendronate include all of the following, EXCEPT:
Correct Answer: B
Rationale: The correct answer is B because alendronate is a second-generation bisphosphonate, not a first-generation one. Alendronate is known to be more potent than EHDP and has a wider therapeutic window. Option A is incorrect as alendronate can cause irritation to the esophagus if not taken correctly. Option C is correct as alendronate reduces osteoclast activity without significantly affecting osteoblasts, making it useful in treating Paget's disease.