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 heart failure is receiving instructions about laxative use. The client should be advised to avoid which of the following laxatives?

Correct answer: A

Rationale: Clients with heart failure often have sodium restrictions. Sodium phosphate can lead to fluid retention due to sodium absorption, which is harmful for individuals with heart failure. Therefore, it should be avoided in this population to prevent exacerbating fluid overload. Psyllium, Bisacodyl, and Polyethylene glycol are safer options for individuals with heart failure as they do not pose the risk of exacerbating fluid overload through sodium retention.

3. A client is taking Digoxin and has a new prescription for Colesevelam. Which of the following instructions should the nurse include in the teaching?

Correct answer: D

Rationale: The correct instruction for taking Colesevelam is to take it with food and at least one glass of water. This helps to ensure proper absorption and reduce the risk of gastrointestinal side effects. Option A is incorrect because Digoxin and Colesevelam should not be taken together. Option B is irrelevant to the administration of Colesevelam. Option C is unrelated to the specific instructions for taking Colesevelam.

4. A client is starting therapy with doxorubicin. Which of the following findings should the nurse instruct the client to report?

Correct answer: C

Rationale: The correct answer is 'C: Sore throat.' Doxorubicin is known to have immunosuppressive effects, which can predispose the client to infections. A sore throat can be an early sign of infection, and prompt reporting to the healthcare provider is crucial to initiate appropriate interventions and prevent complications. Choices A, B, and D are incorrect because hair loss, fatigue, and red urine are common side effects of doxorubicin and are typically expected during therapy. While these side effects should be monitored, they do not require immediate reporting unless they become severe or concerning.

5. A client has a new prescription for Calcitonin-salmon for postmenopausal osteoporosis. Which of the following instructions should the nurse include in the teaching?

Correct answer: D

Rationale: Calcitonin-salmon is commonly administered intranasally for postmenopausal osteoporosis. It is essential to alternate nostrils daily when inhaling the medication to ensure equal distribution and optimal absorption. This technique helps prevent irritation and congestion in one nostril and enhances the effectiveness of the medication. Choices A, B, and C are incorrect because calcitonin-salmon is not swallowed, applied topically, or taken as a liquid medication after meals. Therefore, instructing the client to alternate nostrils during inhalation is the most appropriate teaching for this medication.

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