ATI RN
Cardiovascular Drugs Quiz Questions
Question 1 of 5
Iodide preparations can be used in following situations EXCEPT:
Correct Answer: D
Rationale: The correct answer is D because iodism refers to the adverse effects of excessive iodine intake, not a situation where iodide preparations are used. A: Iodide is used in thyroid disorders to regulate thyroid hormone production. B: Iodide can be used in granulomatous lesions like Syphilis due to its anti-inflammatory properties. C: Iodide is used as an antiseptic due to its antimicrobial properties. In summary, iodide preparations are used in various medical conditions except for causing iodism.
Question 2 of 5
Anaphylactic shock is a severe, sometimes fatal allergic reaction characterized by a sharp drop in blood pressure, urticaria, and breathing difficulties that is caused by exposure to a foreign substance, such as a drug or bee venom, after preliminary or sensitizing exposure. This consideration is:
Correct Answer: A
Rationale: The correct answer is A because anaphylactic shock is indeed a severe allergic reaction characterized by a drop in blood pressure, urticaria, and breathing difficulties triggered by exposure to an allergen after previous sensitizing exposure. This description matches the definition of anaphylactic shock, making the statement true. The other choices are incorrect because stating it is false (B), all encompassing (C), or none of the above (D) does not align with the specific characteristics and causes of anaphylactic shock.
Question 3 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 4 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 5 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.