what does it mean when a medication has a half life
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Nursing Elites

ATI RN

ATI Proctored Pharmacology 2023

1. What does it mean when a medication has a half-life?

Correct answer: B

Rationale: When a medication has a half-life, it refers to the time it takes for half of the dose to be eliminated from the bloodstream. This parameter is crucial in understanding the duration of action and dosing intervals for medications in clinical practice. Choice A is incorrect as the half-life is not about how long the medication lasts but about elimination from the body. Choice C is incorrect because the half-life is not about the peak effectiveness of the medicine. Choice D is incorrect as it does not accurately define the concept of half-life.

2. A client is being educated about the use of Fluticasone to treat Perennial Rhinitis. Which of the following statements by the client indicates an understanding of the teaching?

Correct answer: B

Rationale: The correct answer is B because Fluticasone may show some benefits within a few hours, but its full therapeutic effect may take up to 3 weeks to be achieved in treating Perennial Rhinitis. Option A is incorrect as the frequency of Fluticasone use is usually once daily. Option C is incorrect as Fluticasone is not used for motion sickness. Option D is incorrect as Fluticasone is a preventive medication and not used for immediate relief when nasal passages are blocked.

3. A client with cancer is prescribed methotrexate. Which supplement should the healthcare provider recommend to reduce the risk of methotrexate toxicity?

Correct answer: A

Rationale: The correct answer is folic acid. Methotrexate is a folic acid antagonist, and supplementing with folic acid can help reduce the risk of methotrexate toxicity. Folic acid supplementation is commonly recommended to counteract the effects of methotrexate on folate metabolism. Magnesium, Vitamin D, and Iron are not specifically indicated to reduce the risk of methotrexate toxicity and therefore are incorrect choices in this scenario.

4. A client is being discharged with a new prescription for furosemide 40 mg PO daily. Which of the following instructions should be included?

Correct answer: D

Rationale: The correct answer is D: 'Stand up slowly to minimize orthostatic hypotension.' Clients prescribed furosemide are at risk for orthostatic hypotension, a sudden drop in blood pressure when changing positions. Advising the client to stand up slowly can help prevent this complication. Instructing the client to avoid rapid position changes decreases the likelihood of dizziness or fainting episodes. Choices A, B, and C are incorrect because furosemide does not require avoiding potassium-rich foods, taking the medication with food, or daily weighing as specific instructions.

5. When educating a client with early Parkinson's disease about pramipexole, what adverse effect should the nurse advise the client to monitor for?

Correct answer: A

Rationale: The correct answer is A: Hallucinations. Pramipexole can lead to hallucinations, especially within 9 months of starting the medication, and may necessitate discontinuation. Hallucinations are a serious adverse effect that the client should be aware of and report promptly to their healthcare provider for evaluation and management. Increased salivation (choice B), diarrhea (choice C), and discoloration of urine (choice D) are not common adverse effects associated with pramipexole and are not typically emphasized in client education for this medication.

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