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 prescribed Diltiazem. Which of the following findings should the nurse monitor?

Correct answer: B

Rationale: Diltiazem is a calcium channel blocker that can cause bradycardia as an adverse effect due to its negative chronotropic properties, slowing down the heart rate. Therefore, the nurse should monitor the client for signs of bradycardia by regularly assessing the heart rate to prevent potential complications. Monitoring for tachycardia (choice A) is incorrect as diltiazem typically does not cause tachycardia. Hypertension (choice C) is not a typical finding to monitor for with diltiazem use. Hyperkalemia (choice D) is not directly associated with diltiazem administration.

3. A client has a prescription for ceftriaxone. Which of the following information should the nurse include in the teaching?

Correct answer: B

Rationale: The correct answer is B. A rash can indicate an allergic reaction to ceftriaxone, which should be reported to the provider. It is crucial to instruct the client to discontinue the medication and seek medical attention if a rash develops to prevent potential serious adverse effects. Choices A, C, and D are incorrect because cough is not a common side effect of ceftriaxone, ceftriaxone is typically administered parenterally, and a yellow discoloration of urine is a harmless side effect due to the color of the medication itself, respectively.

4. When educating a client with a new prescription for Atorvastatin to treat Hyperlipidemia, which instruction should the nurse include?

Correct answer: B

Rationale: The correct instruction for the nurse to include when educating a client with a new prescription for Atorvastatin to treat Hyperlipidemia is to avoid drinking grapefruit juice. Grapefruit juice can increase the blood levels of atorvastatin, leading to an elevated risk of serious side effects such as liver damage and muscle problems. It is essential for the client to be aware of this potential interaction and to follow the nurse's advice to avoid grapefruit juice while taking Atorvastatin. Choices A, C, and D are incorrect. Taking Atorvastatin in the morning is a common recommendation but not the priority over avoiding grapefruit juice. Increasing intake of green, leafy vegetables is generally a healthy dietary choice but is not specific to the medication. Expecting stools to turn clay-colored is not a common side effect of Atorvastatin.

5. What is the therapeutic classification of Furosemide?

Correct answer: B

Rationale: Furosemide is classified therapeutically as a diuretic. Diuretics are medications used to promote diuresis, which helps the body get rid of excess salt and water. Furosemide is commonly prescribed to treat conditions such as fluid retention and swelling (edema) associated with congestive heart failure, liver disease, or kidney disorders. Choice A, Antidiuretics, is incorrect as Furosemide acts as a diuretic, promoting the production of urine. Choice C, Anticonvulsants, is also incorrect as Furosemide is not used to treat seizures. Choice D, Antidotes, is incorrect as Furosemide is not an antidote but rather a medication used to treat conditions related to fluid retention.

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