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 healthcare provider is caring for a client who has a new prescription for Digoxin. Which of the following findings should the healthcare provider identify as a potential sign of Digoxin toxicity?

Correct answer: A

Rationale: Nausea is a potential sign of Digoxin toxicity. Along with vomiting, visual disturbances, and confusion, it can be an early indication of an overdose. Dry mouth is not typically associated with Digoxin toxicity. Hypoglycemia is a low blood sugar level and is not directly related to Digoxin toxicity. Tinnitus, a ringing in the ears, is not a common sign of Digoxin toxicity. Healthcare providers should closely monitor clients on Digoxin for symptoms like nausea to prevent serious complications.

3. A client has a new prescription for Aspirin for the prevention of myocardial infarction. Which of the following findings should be identified as an adverse effect?

Correct answer: B

Rationale: Bruising is an adverse effect to be monitored when a client is prescribed Aspirin for the prevention of myocardial infarction due to its association with increased bleeding risk. Aspirin's antiplatelet effect can lead to bruising and other signs of bleeding, necessitating close observation to prevent complications. Nausea, dizziness, and dry mouth are not typically recognized adverse effects of Aspirin therapy for myocardial infarction prevention.

4. A client has a new prescription for Allopurinol. Which of the following instructions should be included by the healthcare provider?

Correct answer: B

Rationale: Allopurinol can increase the risk of kidney stones as a side effect. To prevent this adverse effect, it is essential for the client to increase their fluid intake. Adequate hydration can help in preventing the formation of kidney stones by keeping urine dilute and flushing out substances that can lead to stone formation.

5. A nurse is reviewing the health history of a client who has a prescription for Propranolol. Which of the following findings should the nurse report to the provider?

Correct answer: C

Rationale: Propranolol is a nonselective beta-blocker that can cause bronchoconstriction, making it contraindicated for clients with a history of bronchial asthma.

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