ATI RN
Pharmacology ATI Proctored Exam 2023
1. A client has been prescribed diltiazem (Cardizem) and asks the nurse what type of drug this is. Which response by the nurse is most appropriate?
- A. “A beta blocker.â€
- B. “A sodium channel blocker.â€
- C. “An alpha blocker.â€
- D. “A calcium channel blocker.â€
Correct answer: D
Rationale: Diltiazem (Cardizem) belongs to the class of drugs known as calcium channel blockers. These medications work by blocking calcium from entering the muscle cells of the heart and blood vessels, leading to relaxation of the blood vessels and reduced workload on the heart. This helps in lowering blood pressure and improving blood flow. It is crucial for the nurse to provide accurate information to the client about the type of drug prescribed to ensure understanding and compliance with the treatment plan.
2. A client is starting therapy with cisplatin, and a healthcare provider is providing education. Which of the following findings should the healthcare provider instruct the client to report?
- A. Tinnitus
- B. Nausea
- C. Constipation
- D. Weight gain
Correct answer: A
Rationale: The correct answer is A: Tinnitus. The healthcare provider should instruct the client to report tinnitus, as it can be an indication of ototoxicity, an adverse effect associated with cisplatin therapy. Ototoxicity is damage to the inner ear structures that can lead to hearing loss, making it crucial for the client to report any early signs such as tinnitus to prevent further complications. Choices B, C, and D are less concerning in the context of cisplatin therapy. Nausea and constipation are common side effects of cisplatin but are not typically indicative of serious complications requiring immediate reporting. Weight gain is not a typical side effect associated with cisplatin therapy and is less likely to be related to the medication.
3. What is the correct definition of drug absorption?
- A. Movement of a drug from the site of administration to various tissues of the body
- B. Describes the absorption, distribution, metabolism, and excretion of drugs
- C. These types of drugs can be taken over the counter
- D. This addresses how various drugs affect different forms of the body
Correct answer: A
Rationale: The correct definition of drug absorption is the movement of a drug from the site of administration into various tissues of the body. It is the process by which a drug is taken up and enters the systemic circulation. Choice B describes the pharmacokinetics of drugs, including absorption, distribution, metabolism, and excretion, but it is not a specific definition of drug absorption. Choice C is unrelated to drug absorption, as it refers to over-the-counter drugs. Choice D is too vague and does not specifically address the process of drug absorption.
4. What is the pharmacological action of metformin?
- A. Blocks stimulation of beta1 and beta2.
- B. Blocks vasoconstriction and aldosterone.
- C. Acts at many levels in the CNS to produce an anxiolytic effect.
- D. Decreases hepatic glucose production.
Correct answer: D
Rationale: The correct answer is D: Decreases hepatic glucose production. Metformin's primary pharmacological action is to decrease hepatic glucose production, leading to lower blood sugar levels and improved insulin sensitivity in the liver. Choices A, B, and C are incorrect because metformin does not block stimulation of beta1 and beta2 receptors, vasoconstriction, aldosterone, or act in the CNS to produce an anxiolytic effect. Therefore, these options are not reflective of metformin's mechanism of action.
5. A client is taking Epoetin Alfa for anemia. Which of the following laboratory tests should the nurse monitor to evaluate the effectiveness of the therapy?
- A. White blood cell count
- B. Platelet count
- C. Hematocrit
- D. Serum potassium level
Correct answer: C
Rationale: The nurse should monitor the hematocrit level to evaluate the effectiveness of Epoetin Alfa therapy since it stimulates red blood cell production. Hematocrit reflects the volume of red blood cells in the blood, providing a direct measure of the therapy's impact on increasing red blood cell mass and addressing anemia. Monitoring white blood cell count and platelet count is not directly related to assessing the effectiveness of Epoetin Alfa therapy for anemia. Serum potassium level monitoring may be necessary due to potential side effects of the medication, but it is not the primary indicator of therapy effectiveness in treating anemia.
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