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 filgrastim. Which of the following adverse effects should the nurse instruct the client to monitor?

Correct answer: A

Rationale: When a client is starting therapy with filgrastim, monitoring for bone pain is essential. Filgrastim can lead to increased bone marrow activity, resulting in bone pain as a common adverse effect. Instructing the client to monitor and report any bone pain promptly can help in managing this side effect effectively.

3. A client is receiving treatment with irinotecan. Which of the following findings should the nurse monitor?

Correct answer: A

Rationale: Corrected Rationale: Irinotecan is known to commonly cause diarrhea as an adverse effect due to its impact on the gastrointestinal tract. Therefore, the nurse should closely monitor the client for signs of diarrhea while receiving this treatment. Choices B, C, and D are incorrect because irinotecan is not typically associated with hypertension, ototoxicity, or neutropenia as primary adverse effects. While these side effects can occur with other medications, they are not the main concerns when monitoring a client receiving irinotecan.

4. A client has a new prescription for Digoxin to treat heart failure. Which of the following instructions should the nurse include in the teaching?

Correct answer: A

Rationale: The correct answer is A. It is crucial for clients on Digoxin to monitor their heart rate. A heart rate less than 60/min can indicate bradycardia, a potential side effect of Digoxin. Therefore, the client should be instructed to contact the provider if their heart rate is less than 60/min to prevent complications and receive appropriate management. Choices B, C, and D are incorrect. Checking the pulse rate for 30 seconds and multiplying by 2 is not specific to Digoxin administration. Increasing sodium intake is contraindicated as Digoxin can lead to sodium retention. Taking Digoxin with food if nausea occurs is not recommended as it may affect the drug's absorption.

5. A client is receiving spironolactone. Which of the following findings should the nurse report to the provider?

Correct answer: C

Rationale: A serum potassium level of 5.2 mEq/L indicates hyperkalemia. Spironolactone is a potassium-sparing diuretic that can lead to potassium retention. The nurse should notify the provider and withhold the medication to prevent further elevation of potassium levels, which can result in serious cardiac complications. The other findings (Serum Sodium 144 mEq/L, Urine output 120 mL in 4 hrs, and Blood Pressure 140/90 mmHg) are within normal ranges and not directly related to spironolactone therapy.

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