ATI RN
ATI N180 Pharmacology Exam Questions
Extract:
Question 1 of 5
The nurse is educating a client about taking a tetracycline along with an antacid. The nurse explains to the client not to take these two medications because the antacid can reduce the absorption of the tetracycline. When one drug reduces the effect of another, it is:
Correct Answer: C
Rationale: The correct answer is C: an antagonistic effect. This is because when the antacid reduces the absorption of the tetracycline, it diminishes the effectiveness of the tetracycline. This is an example of drug-drug interaction where one drug interferes with the action of another. An antagonistic effect occurs when one drug diminishes the effect of another drug. In this case, the antacid is antagonizing the tetracycline, leading to decreased absorption and potentially reducing its therapeutic benefits.
Choices A, B, and D are incorrect. A is an allergic reaction, which is an immune system response to a drug and not related to drug interactions. B is a synergistic effect, which occurs when two drugs together produce a greater effect than the sum of their individual effects, not when one drug inhibits the action of another. D states "None of the above," which is also incorrect as the scenario described clearly matches with the definition of an antagonistic effect.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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