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 with a prescription for Vasopressin to treat Diabetes Insipidus is being taught by a healthcare professional. Which of the following client statements indicates an understanding of the teaching?

Correct answer: C

Rationale: The correct answer is C because Vasopressin can cause vasoconstriction, potentially leading to chest pain. It is crucial for the client to inform their healthcare provider immediately if they experience chest pain while on Vasopressin therapy to address any potential cardiovascular complications promptly. Choices A, B, and D are incorrect. While maintaining adequate hydration is essential with Vasopressin therapy due to its antidiuretic effect, increasing water intake is not the most critical aspect to monitor. Reducing sodium intake may be beneficial in some cases but is not directly related to the potential side effects of Vasopressin. Taking the medication with food is not a specific instruction for Vasopressin administration.

3. A client has a new prescription for Digoxin. Which of the following instructions should the nurse include?

Correct answer: B

Rationale: When educating a client about Digoxin, it is crucial to instruct them to monitor their pulse before taking the medication. Digoxin can lead to bradycardia, so monitoring the pulse is essential to ensure it is not below 60 beats per minute before taking each dose. If the pulse is low, the client should hold the dose and seek guidance from their healthcare provider. Choices A, C, and D are incorrect. Taking Digoxin with food may affect its absorption, Digoxin is not known to increase appetite, and feeling nauseated does not necessarily indicate the need to discontinue the medication.

4. A client has a prescription for Nitroglycerin. Which of the following instructions should the nurse include?

Correct answer: B

Rationale: The correct administration of Nitroglycerin involves taking one tablet at the onset of chest pain, then another tablet every 5 minutes for up to three doses. This protocol aims to relieve angina symptoms. Choice A is incorrect because waiting 15 minutes between doses may delay symptom relief. Choice C is incorrect as Nitroglycerin is not typically taken at bedtime but rather during angina episodes. Choice D is incorrect because Nitroglycerin is usually taken sublingually, so it doesn't need to be taken on an empty stomach.

5. When educating a client who has a prescription for Levothyroxine, which instruction should the nurse include?

Correct answer: A

Rationale: The correct instruction for taking Levothyroxine is on an empty stomach. This helps to enhance the absorption and effectiveness of the medication. Consuming it with food or antacids can impede its absorption, leading to decreased efficacy.

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