what is pharmacodynamics
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Nursing Elites

ATI RN

ATI Proctored Pharmacology 2023

1. What is pharmacodynamics?

Correct answer: B

Rationale: Pharmacodynamics refers to the drug's actions at receptor sites and the physiological, chemical, and behavioral effects produced by these actions. It involves understanding how drugs interact with the body at the molecular level to produce their effects, including mechanisms of action, receptor binding, and downstream physiological responses. Choice A is incorrect because it describes pharmacopeia, which is a reference book containing standards for drugs. Choice C refers to efficacy, which is the maximum effect a drug can produce. Choice D describes pharmacokinetics, which focuses on the movement of drugs within the body.

2. A client is taking lisinopril. Which of the following outcomes indicates a therapeutic effect of the medication?

Correct answer: A

Rationale: The therapeutic effect of lisinopril, an ACE inhibitor, is indicated by a decrease in blood pressure. Lisinopril works by relaxing blood vessels, leading to a reduction in blood pressure. Monitoring and achieving a decrease in blood pressure is a key outcome when managing hypertension with lisinopril. Choices B, C, and D are incorrect because lisinopril is not intended to increase HDL cholesterol, prevent bipolar manic episodes, or improve sexual function. Therefore, the correct outcome indicating the therapeutic effect of lisinopril is a decrease in blood pressure.

3. While caring for a client on long-term aspirin therapy, the nurse should monitor the client for which of the following complications?

Correct answer: A

Rationale: Corrected Rationale: Long-term aspirin therapy can increase the risk of hemorrhagic stroke due to its antiplatelet effects, which can lead to bleeding complications. Aspirin inhibits platelet function, potentially causing bleeding in the brain and increasing the risk of a hemorrhagic stroke. Choice B, thromboembolic stroke, is incorrect because aspirin therapy is actually used to prevent thromboembolic events by inhibiting platelet aggregation. Choices C and D, iron deficiency anemia and neutropenia, are not directly associated with long-term aspirin therapy.

4. Which of the following is not a side effect of the vasodilator Nifedipine?

Correct answer: D

Rationale: Sexual dysfunction is not a common side effect of vasodilators such as Nifedipine. Nausea, flushed appearance, and vertigo are more commonly reported side effects associated with this medication. It's essential for healthcare providers to be aware of the potential side effects to monitor and manage them effectively in patients prescribed with Nifedipine.

5. A client has a new prescription for Ranitidine to treat peptic ulcer disease. Which of the following instructions should the nurse include?

Correct answer: B

Rationale: The correct instruction that the nurse should include for a client prescribed Ranitidine to treat peptic ulcer disease is to avoid smoking while taking the medication. Smoking can interfere with the effectiveness of ranitidine and worsen ulcer symptoms. Therefore, it is crucial for clients to abstain from smoking to ensure optimal therapeutic outcomes. Choices A, C, and D are incorrect. Taking Ranitidine with or without food does not significantly affect its effectiveness, there is no specific need to increase intake of dairy products, and expecting a yellow tinge to the skin is not a common side effect associated with Ranitidine.

Similar Questions

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