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 has been prescribed Valsartan. Which of the following adverse effects should the nurse monitor?

Correct answer: A

Rationale: Corrected Rationale: Valsartan is an angiotensin II receptor blocker (ARB) that can lead to hyperkalemia by inhibiting the action of aldosterone. Hyperkalemia is a potential adverse effect, making it essential for the nurse to closely monitor the client's potassium levels to prevent complications such as cardiac arrhythmias. Incorrect Options Rationale: - Option B, Hypoglycemia, is not a common adverse effect of Valsartan. - Option C, Bradycardia, is not typically associated with Valsartan use. - Option D, Hypercalcemia, is not a known adverse effect of Valsartan; instead, Valsartan can lead to hyperkalemia.

3. A client has a new prescription for Metronidazole to treat an infection. Which of the following instructions should the nurse include?

Correct answer: A

Rationale: The correct instruction is to avoid alcohol while taking Metronidazole. This is crucial to prevent a disulfiram-like reaction, which can result in severe nausea and vomiting. Alcohol should be avoided for at least 48 hours after completing the medication course as well. Choice B is incorrect because Metronidazole can be taken with food to reduce gastrointestinal side effects. Choice C is incorrect because there is no need to increase dairy product intake while on Metronidazole. Choice D is incorrect because there is no specific instruction to avoid direct sunlight while taking this medication.

4. When teaching a client who has a new prescription for Dextromethorphan to suppress a cough, which adverse effect should the nurse instruct the client to monitor for?

Correct answer: C

Rationale: The correct answer is C: Sedation. Dextromethorphan can cause sedation, so the client should be advised to avoid activities that require alertness. Diarrhea, anxiety, and palpitations are not commonly associated adverse effects of Dextromethorphan.

5. A client is taking naproxen following an exacerbation of rheumatoid arthritis. Which of the following statements by the client requires further discussion?

Correct answer: B

Rationale: The client stating that they have been taking an antacid to help with indigestion while on naproxen requires further discussion. This statement suggests potential gastrointestinal distress or interactions between the medications. Antacids can affect the absorption of naproxen or lead to other complications. Therefore, the nurse should address this statement with the client to ensure safe and effective medication management. Choices A, C, and D do not raise immediate concerns related to the client's medication regimen and can be considered positive health behaviors or side effects of treatment that do not require immediate intervention.

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