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 a new prescription for Labetalol. Which of the following instructions should be included?

Correct answer: B

Rationale: The correct answer is to instruct the client to avoid sudden discontinuation of Labetalol. Abrupt discontinuation of beta-blockers like Labetalol can lead to rebound hypertension and other cardiac issues. It is important for clients to taper off the medication under healthcare provider guidance to prevent potential complications.

3. A client is receiving discharge instructions for a new prescription of Warfarin. Which of the following over-the-counter medications should the client be instructed to avoid?

Correct answer: B

Rationale: The correct answer is B: Ibuprofen. Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that can increase the risk of bleeding when taken with Warfarin due to its antiplatelet effects. Patients on Warfarin should avoid NSAIDs like Ibuprofen and opt for alternative pain relief options to prevent potential complications such as an increased risk of bleeding. Acetaminophen (Choice A), Diphenhydramine (Choice C), and Loratadine (Choice D) are not known to significantly interact with Warfarin in terms of bleeding risk and are generally considered safe to use alongside Warfarin.

4. What symptom would alert the healthcare professional to hold Albuterol and notify a healthcare professional immediately?

Correct answer: B

Rationale: If a patient experiences paradoxical bronchospasm after taking Albuterol, the medication should be withheld, and a healthcare professional should be notified immediately. Paradoxical bronchospasm is a serious adverse reaction where the airways constrict instead of dilating, leading to breathing difficulties. This condition requires prompt medical attention to assess and manage the patient's respiratory status. The other options, insomnia, nausea, and headache, are not typically associated with the need to hold Albuterol and notify a healthcare professional immediately.

5. A client has a new prescription for Verapamil to treat angina. Which of the following client statements should indicate to the nurse that the client is experiencing an adverse effect of Verapamil?

Correct answer: A

Rationale: Constipation is a common adverse effect of Verapamil, a calcium channel blocker. Verapamil can slow down bowel movements and lead to constipation as a side effect. Therefore, the client reporting frequent constipation should alert the nurse to a potential adverse effect of Verapamil. Choices B, C, and D are not typically associated with Verapamil use. Increased urination is not a common side effect of Verapamil, peeling skin is more likely related to a dermatological issue, and ringing in the ears is not a known adverse effect of Verapamil.

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