Nursing Elites

1. A nurse is reviewing the laboratory results of a client who has hypokalemia. Which of the following findings should the nurse expect?

• A. Serum potassium 5.4 mEq/L
• B. Flat T waves
• C. Elevated ST segments
• D. Bradycardia

Correct answer: B

Rationale: Flat T waves are a characteristic ECG finding in hypokalemia. Hypokalemia causes a decrease in serum potassium levels, leading to altered cardiac conduction. Flat T waves are associated with hypokalemia-induced cardiac dysrhythmias. Elevated ST segments are typically seen in conditions like myocardial infarction, not in hypokalemia. Bradycardia is not a typical manifestation of hypokalemia; instead, tachycardia may occur due to potassium imbalances affecting the heart's electrical activity.

2. A nurse is caring for a 5-month-old infant who has manifestations of severe dehydration and a prescription for parenteral fluid therapy. The guardian asks, 'What are the indications that my baby needs an IV?' Which of the following responses should the nurse make?

• A. Your baby needs an IV because she is not producing any tears
• B. Your baby needs an IV because her fontanels are bulging
• C. Your baby needs an IV because she is breathing slower than normal
• D. Your baby needs an IV because her heart rate is decreasing

Correct answer: A

Rationale: The correct answer is A. A lack of tear production is a sign of severe dehydration in infants, indicating the need for IV therapy. Option B, bulging fontanels, is a sign of increased intracranial pressure, not dehydration. Option C, breathing slower than normal, and Option D, decreasing heart rate, are not specific signs of severe dehydration that would indicate the need for IV therapy in this case.

3. A client who has a new prescription for lisinopril is being taught by a nurse. Which of the following client statements indicates an understanding of the teaching?

• A. I should avoid using salt substitutes while taking this medication.
• B. I should take this medication with food to prevent nausea.
• C. I should increase my intake of potassium-rich foods while taking this medication.
• D. I should limit my fluid intake while taking this medication.

Correct answer: A

Rationale: The correct answer is A. Lisinopril can increase potassium levels, so clients should avoid salt substitutes that contain potassium. Choice B is incorrect because lisinopril is usually taken on an empty stomach. Choice C is incorrect because lisinopril can lead to hyperkalemia, so increasing potassium-rich foods is not recommended. Choice D is incorrect because lisinopril can cause increased urination, so fluid intake should not be limited.

4. A healthcare professional is reviewing a client's admission laboratory results. Which of the following findings requires further evaluation?

• A. Sodium 138
• B. Creatinine 1.8
• C. Hemoglobin 15
• D. Potassium 4.2

Correct answer: B

Rationale: The correct answer is B. An elevated creatinine level, such as 1.8, suggests potential kidney dysfunction, requiring further assessment. Sodium level within normal limits (135-145 mEq/L), hemoglobin level of 15 g/dL, and potassium level of 4.2 mEq/L are all within normal ranges and do not indicate immediate concerns. Therefore, they do not require further evaluation at this time.

5. A client with hypertension is being taught about dietary modifications by a nurse. Which of the following food choices by the client indicates an understanding of the teaching?

• A. I will choose processed meats for meals.
• B. I will eat canned vegetables to reduce my sodium intake.
• C. I will eat fresh fruits and vegetables each day.
• D. I will increase my intake of canned soups.

Correct answer: C

Rationale: The correct answer is C. Choosing fresh fruits and vegetables is a healthy choice for someone with hypertension as they are low in sodium and high in nutrients. Processed meats (A) are high in sodium and unhealthy fats, which can worsen hypertension. Canned vegetables (B) often have added sodium, so fresh is a better choice. Canned soups (D) are typically high in sodium and should be limited in a hypertensive diet.

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