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 starting therapy with Metformin. Which of the following instructions should be included by the healthcare provider?

Correct answer: A

Rationale: The correct answer is A: 'Take this medication with your first bite of food.' Metformin should be taken with meals to reduce gastrointestinal side effects and ensure better absorption. By taking the medication with the first bite of food, the client can help minimize potential stomach upset and improve the drug's effectiveness. Choice B is incorrect because taking Metformin on an empty stomach can increase the risk of gastrointestinal side effects. Choice C is incorrect as there is no specific recommendation to take Metformin before bedtime. Choice D is incorrect because Metformin is typically taken daily, not every other day, as prescribed by the healthcare provider.

3. A client with prostate cancer is receiving leuprolide. Which of the following findings should the nurse monitor?

Correct answer: C

Rationale: The nurse should monitor the client for gynecomastia when receiving leuprolide as it can cause decreased testosterone levels, leading to the development of gynecomastia. Choices A, B, and D are incorrect because leuprolide actually decreases testosterone levels, which would not result in increased testosterone levels or libido. Leuprolide is not associated with hypoglycemia, so monitoring for this is unnecessary in a client receiving this medication.

4. A client has a new prescription for Pancrelipase for chronic pancreatitis. Which of the following instructions should be included by the nurse?

Correct answer: A

Rationale: The correct instruction for taking Pancrelipase is to take it with meals and snacks to aid in the digestion of fats, proteins, and carbohydrates. This helps optimize the effectiveness of the medication in managing chronic pancreatitis. Choice B is incorrect because Pancrelipase should not be chewed but swallowed whole. Choice C is incorrect as the medication should be taken with meals. Choice D is incorrect because while Pancrelipase can cause stool changes, yellow stool is not an expected outcome.

5. A healthcare provider is caring for a group of clients who are not protected against Varicella. The healthcare provider should prepare to administer the Varicella vaccine at this time to which of the following clients?

Correct answer: D

Rationale: The correct answer is the 32-year-old man who has essential hypertension. Individuals who did not receive two doses of the varicella vaccine earlier in life should be immunized. Essential hypertension is not a contraindication for this vaccine, making it safe to administer to this client. Choice A is incorrect because administering the Varicella vaccine is contraindicated during pregnancy due to the risk of transmission to the fetus. Choice B is incorrect because a severe allergy to neomycin is a contraindication to the Varicella vaccine, which contains a trace amount of neomycin. Choice C is incorrect because the Varicella vaccine is not recommended for infants under 12 months of age.

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