Nursing Elites

1. Heparin 20,000 units in 500 ml D5W at 50 ml/hour has been infusing for 5.5 hours. How much heparin has the client received?

• A. 11,000 units.
• B. 13,000 units.
• C. 15,000 units.
• D. 17,000 units.

Correct answer: A

Rationale: To calculate the total amount of heparin received, multiply the infusion rate (50 ml/hour) by the total infusion time (5.5 hours). This results in 275 ml of the solution infused. Since there are 20,000 units of heparin in 500 ml, there are 800 units per ml. Therefore, 275 ml contains 220,000 units. However, the heparin is diluted in 500 ml, so the client has received half of this amount, which is 110,000 units. Therefore, the correct answer is 11,000 units. Choices B, C, and D are incorrect as they do not reflect the correct calculation based on the provided information.

2. A client has a new prescription for nitroglycerin sublingual tablets. Which of the following instructions should the nurse include?

• A. Take the medication with food.
• B. Place the tablet under your tongue and let it dissolve completely.
• C. Swallow the tablet whole with a glass of water.
• D. Chew the tablet for faster relief.

Correct answer: B

Rationale: The correct instruction for a client prescribed nitroglycerin sublingual tablets is to place the tablet under the tongue and let it dissolve completely. This route of administration allows for rapid absorption of the medication through the oral mucosa, providing quick relief for angina symptoms. Option A, taking the medication with food, is incorrect as nitroglycerin should be taken sublingually, not with food. Option C, swallowing the tablet whole with water, is incorrect as sublingual tablets should not be swallowed whole. Option D, chewing the tablet for faster relief, is also incorrect as chewing the tablet can lead to rapid absorption and potential adverse effects rather than a controlled release for angina relief.

3. The LPN is instructing a client with high cholesterol about diet and lifestyle modifications. What comment from the client indicates that the teaching has been effective?

• A. If I exercise at least twice weekly for one hour, I will lower my cholesterol.
• B. I need to avoid eating proteins, including red meat.
• C. I will limit my intake of beef to 4 ounces per week.
• D. My blood level of low-density lipoproteins needs to increase.

Correct answer: C

Rationale: The correct answer is C. Limiting intake of beef to 4 ounces per week is an effective dietary modification to manage high cholesterol. Choice A is incorrect because the frequency and duration of exercise alone may not be sufficient to lower cholesterol significantly. Choice B is incorrect as proteins, including lean sources like poultry and fish, can be a part of a healthy diet. Choice D is incorrect as low-density lipoproteins, known as bad cholesterol, should be decreased, not increased, for heart health.

4. When applying an ice bag to a client's ankle following a sports injury, which of the following actions should the nurse take?

• A. Fill the bag two-thirds full with ice.
• B. Apply the ice bag directly to the skin with a barrier.
• C. Keep the ice bag on for more than 30 minutes at a time.
• D. Use a frozen gel pack instead of ice.

Correct answer: A

Rationale: Filling the ice bag two-thirds full is the correct action as it ensures the effectiveness of the ice application while allowing some space for the ice to move and conform to the injury. Choice B is incorrect because the ice bag should be applied with a barrier like a cloth to prevent direct contact with the skin, which can lead to ice burns. Choice C is wrong as ice should typically be applied for 20 minutes at a time to avoid tissue damage. Choice D is also incorrect as ice is preferred over frozen gel packs for immediate sports injury management.

5. A client with chronic kidney disease is being assessed. Which laboratory value would be most concerning?

• A. Serum creatinine of 3.0 mg/dL
• B. Blood urea nitrogen (BUN) of 45 mg/dL
• C. Serum potassium of 6.5 mEq/L
• D. Hemoglobin of 10 g/dL

Correct answer: C

Rationale: In a client with chronic kidney disease, an elevated serum potassium level (hyperkalemia) is the most concerning finding. Hyperkalemia can lead to life-threatening cardiac dysrhythmias due to its effect on the electrical conduction system of the heart. Monitoring and managing serum potassium levels are crucial in patients with chronic kidney disease to prevent serious complications. While elevated serum creatinine (Choice A) and Blood Urea Nitrogen (BUN) levels (Choice B) indicate impaired kidney function, hyperkalemia poses an immediate risk of cardiac complications. Hemoglobin levels (Choice D) are typically lower in chronic kidney disease due to decreased erythropoietin production, but they do not present an immediate life-threatening risk like hyperkalemia.

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