when taking digoxin low levels of what can cause toxicity
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ATI Pharmacology Proctored Exam 2023 Quizlet

1. When taking Digoxin, low levels of what can cause toxicity?

Correct answer: A

Rationale: Low potassium levels can lead to Digoxin toxicity. Digoxin competes with potassium for binding sites on the sodium-potassium pump. When potassium levels are low, there is an increased risk of Digoxin binding and toxicity. Choice B (Calcium) is incorrect because low calcium levels are not directly linked to Digoxin toxicity. Choice C (Sodium) is incorrect as low sodium levels do not cause Digoxin toxicity. Choice D (Magnesium) is incorrect as low magnesium levels do not contribute to Digoxin toxicity.

2. A client has been prescribed Prednisone for asthma. Which of the following instructions should the nurse include in the teaching?

Correct answer: C

Rationale: Prednisone is best taken in the morning to reduce the risk of insomnia, a common side effect of corticosteroids. Instructing the client to take the medication in the morning aligns with the goal of minimizing the impact of insomnia, which can disrupt sleep patterns and affect overall well-being. Choices A, B, and D are incorrect. Taking Prednisone with food does not primarily focus on preventing nausea; taking it at bedtime does not primarily reduce drowsiness, and avoiding sudden changes in position is not a specific instruction related to Prednisone use for asthma.

3. A healthcare professional working in an emergency department is caring for a client who has Benzodiazepine toxicity due to an overdose. Which of the following actions is the healthcare professional's priority?

Correct answer: B

Rationale: When managing a client with Benzodiazepine toxicity, the priority action for the healthcare professional is to assess the client. Identifying the client's level of orientation allows the healthcare professional to understand the client's cognitive status, which is crucial for further interventions and decision-making in the care plan. Administering flumazenil (Choice A) may precipitate withdrawal symptoms and should be done cautiously. Infusing IV fluids (Choice C) can be important but is not the priority over assessing the client. Gastric lavage (Choice D) is not typically recommended due to the risk of complications and its limited effectiveness in cases of Benzodiazepine overdose.

4. A client has a new prescription for transdermal patches. Which of the following statements should the nurse identify as an indication that the client understands the instructions?

Correct answer: C

Rationale: The correct answer is C because applying the patch to an area of skin without hair ensures better absorption of the medication. Hair can interfere with the patch's adherence and effectiveness. It is important for the client to choose a clean, hairless area for proper medication delivery. Choices A, B, and D are incorrect. Cleaning the site with an alcohol swab is a good practice but does not specifically indicate understanding of proper patch application. Rotating application sites weekly is important to prevent skin irritation but is not directly related to applying the patch to an area of skin without hair. Placing the new patch where the old patch was may lead to skin irritation and poor absorption of the medication.

5. A client with thrombophlebitis receiving heparin by continuous IV infusion asks the nurse how long it will take for the heparin to dissolve the clot. Which of the following responses should the nurse give?

Correct answer: C

Rationale: The correct response is C. Heparin does not dissolve clots; it prevents new clots from forming. Heparin works by inhibiting the formation of new clots and the extension of existing clots, rather than directly dissolving them. The client should be informed that the purpose of heparin therapy is to prevent the clot from getting larger and to reduce the risk of new clots forming. Choices A, B, and D are incorrect. Choice A talks about reaching a therapeutic blood level of heparin, which is not related to clot dissolution. Choice B deflects the question to a pharmacist without providing relevant information. Choice D inaccurately suggests that an oral medication will dissolve the clot, which is not the mechanism of action for heparin.

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