when taking digoxin low levels of what can cause toxicity
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Nursing Elites

ATI RN

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 healthcare provider is reviewing the health history of a client who is starting therapy with tamoxifen. The healthcare provider should recognize that tamoxifen is contraindicated in which of the following clients?

Correct answer: A

Rationale: Tamoxifen is contraindicated in clients with a history of thromboembolic events, such as deep-vein thrombosis, due to the increased risk of blood clots. The estrogenic effects of tamoxifen can further increase the risk of thromboembolic events, making it unsafe for individuals with a history of deep-vein thrombosis. Choice B (migraine headaches), Choice C (hypertension), and Choice D (anemia) are not contraindications for tamoxifen therapy. Migraine headaches, hypertension, and anemia do not pose the same risk of adverse effects related to blood clot formation as deep-vein thrombosis does.

3. A client has a new prescription for Clonidine. What instruction should the nurse include during teaching?

Correct answer: B

Rationale: The correct instruction when teaching a client about Clonidine is to expect to feel drowsy or lightheaded. Clonidine can cause these side effects, especially when starting the medication. The nurse should advise the client to avoid activities that require alertness until they understand how the medication affects them. Choices A, C, and D are incorrect because taking Clonidine with food, increasing fluid intake, or avoiding foods high in fat are not specific instructions related to managing the side effects of Clonidine.

4. When providing discharge instructions to a client with a new prescription for Levofloxacin, which of the following instructions should the nurse include?

Correct answer: B

Rationale: The correct answer is to instruct the client to avoid taking Levofloxacin with dairy products. This is because calcium in dairy products can interfere with the absorption of the medication. Patients should be advised to take Levofloxacin either 1 hour before or 2 hours after consuming dairy products to ensure optimal effectiveness. Choice A is incorrect because Levofloxacin can be taken with or without food. Choice C is incorrect as the timing of Levofloxacin administration is not specified as at bedtime. Choice D is also incorrect as there is no need to increase intake of potassium-rich foods specifically for Levofloxacin administration.

5. A healthcare provider is assessing a client who is taking Digoxin to treat heart failure. Which of the following findings is a manifestation of digoxin toxicity?

Correct answer: D

Rationale: The correct manifestation of digoxin toxicity is the report of anorexia. Anorexia, blurred vision, stomach pain, and diarrhea are common signs of digoxin toxicity. Bruising, metallic taste, and muscle pain are not typically associated with digoxin toxicity. Patients should promptly report symptoms of toxicity to their healthcare provider for further evaluation and management.

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