Nursing Elites

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

• A. Potassium
• B. Calcium
• C. Sodium
• D. Magnesium

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 professional is preparing to administer heparin 15,000 units subcutaneously every 12 hours. The available heparin injection is 20,000 units/mL. How many milliliters should the healthcare professional administer per dose?

• A. 0.8 mL
• B. 0.75 mL
• C. 0.5 mL
• D. 1 mL

Correct answer: A

Rationale: To calculate the volume to administer, use the formula: Desired dose / Concentration = Volume to administer. In this case, (15,000 units / 20,000 units/mL) = 0.75 mL. Since the volume needs to be rounded up to the nearest tenth, the correct answer is 0.8 mL. Choice B (0.75 mL) is incorrect because it does not account for rounding up the volume. Choices C (0.5 mL) and D (1 mL) are incorrect as they do not reflect the precise calculation based on the given concentration and desired dose.

3. A healthcare professional is caring for a client who is prescribed Metformin. Which of the following laboratory values should the healthcare professional monitor to assess for potential adverse effects?

• A. Blood glucose
• B. Creatine kinase
• C. Hemoglobin A1c
• D. Serum creatinine

Correct answer: D

Rationale: Corrected Rationale: Metformin can lead to lactic acidosis, especially in individuals with impaired renal function. Monitoring the client's serum creatinine levels is crucial to assess kidney function because Metformin is eliminated by the kidneys, and impaired renal function can increase the risk of adverse effects. Monitoring blood glucose levels is essential for assessing the effectiveness of Metformin in managing diabetes but is not directly related to potential adverse effects of Metformin. Creatine kinase is not typically monitored in relation to Metformin therapy. Hemoglobin A1c is used to assess long-term glucose control in diabetes but is not specific for monitoring Metformin adverse effects.

4. A healthcare provider is educating a client who has a prescription for Theophylline. Which of the following instructions should the healthcare provider include?

• A. Avoid caffeine while taking this medication.
• B. You should increase your fluid intake.
• C. Take this medication in the evening.
• D. You may experience increased appetite while on this medication.

Correct answer: A

Rationale: The correct answer is A: 'Avoid caffeine while taking this medication.' Caffeine can increase the risk of theophylline toxicity as it competes for the same metabolic pathways. Consuming caffeine while on theophylline can lead to adverse effects. Choice B is incorrect because although maintaining adequate hydration is important, it is not a specific instruction related to theophylline use. Choice C is incorrect as the timing of the medication administration should be based on the healthcare provider's recommendation and the client's individual needs. Choice D is incorrect as increased appetite is not a common side effect associated with theophylline.

5. The client asks the nurse about common side effects of calcium channel blockers. What should the nurse include in client teaching?

• A. Headache
• B. Constipation
• C. Epistaxis
• D. Dysuria

Correct answer: A

Rationale: One of the common side effects of calcium channel blockers is a headache. This is important information for the nurse to include in client teaching as it helps the client understand potential adverse effects of the medication. Constipation, epistaxis, and dysuria are not typically associated with calcium channel blockers.

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