which electrolyte imbalance is most concerning in a patient on furosemide

ATI RN

ATI RN Exit Exam Test Bank

1. Which electrolyte imbalance is most concerning in a patient on furosemide?

A. Hyperkalemia
B. Hypokalemia
C. Hyponatremia
D. Hypercalcemia

Correct answer: B

Rationale: The correct answer is Hypokalemia. Furosemide is a loop diuretic that can lead to potassium depletion by increasing its excretion in the urine. Hypokalemia is a common and concerning side effect of furosemide therapy. Hyperkalemia (Choice A) is less likely as furosemide tends to lower potassium levels. Hyponatremia (Choice C) is more commonly seen with thiazide diuretics. Hypercalcemia (Choice D) is not directly associated with furosemide use.

2. A nurse is caring for a client who has chronic kidney disease. The nurse should identify which of the following laboratory values as an indication for hemodialysis?

A. Glomerular filtration rate of 14 mL/min
B. BUN 16 mg/dL
C. Serum magnesium 1.8 mg/dL
D. Serum phosphorus 4.0 mg/dL

Correct answer: A

Rationale: A glomerular filtration rate (GFR) of 14 mL/min is significantly low, indicating poor kidney function and the need for hemodialysis to remove waste products effectively. BUN, serum magnesium, and serum phosphorus levels are important in assessing kidney function and electrolyte balance but are not direct indicators for the initiation of hemodialysis. BUN (blood urea nitrogen) reflects the kidney's ability to filter waste products, serum magnesium levels are important for muscle and nerve function, and serum phosphorus levels are vital for bone health.

3. A nurse is providing teaching to a client who has a new prescription for levothyroxine. Which of the following statements should the nurse include?

A. Take this medication with food to prevent gastrointestinal upset.
B. Take this medication in the morning to prevent insomnia.
C. You may experience weight gain while taking this medication.
D. You should avoid eating foods that contain iodine.

Correct answer: B

Rationale: The correct answer is B. Instructing the client to take levothyroxine in the morning is important to prevent insomnia, a common side effect of this medication. Choice A is incorrect as levothyroxine should be taken on an empty stomach. Choice C is inaccurate because weight loss, not weight gain, is a potential side effect of levothyroxine. Choice D is not necessary as clients do not need to avoid foods containing iodine while taking levothyroxine.

4. Which electrolyte imbalance is commonly seen in patients receiving furosemide?

A. Hypokalemia
B. Hypercalcemia
C. Hyponatremia
D. Hyperkalemia

Correct answer: A

Rationale: The correct answer is A: Hypokalemia. Furosemide is a loop diuretic that can lead to potassium loss, resulting in hypokalemia. This electrolyte imbalance necessitates close monitoring to prevent complications such as cardiac arrhythmias. Choices B, C, and D are incorrect. Hypercalcemia is not a common side effect of furosemide. Hyponatremia is more commonly associated with other medications like thiazide diuretics. Hyperkalemia is the opposite electrolyte imbalance and is not typically seen with furosemide use.

5. What is the most important intervention for a patient with suspected DVT?

A. Administer anticoagulants
B. Monitor oxygen levels
C. Apply compression stockings
D. Encourage ambulation

Correct answer: A

Rationale: The correct answer is to administer anticoagulants. Administering anticoagulants is crucial in the management of deep vein thrombosis (DVT) as it helps prevent the clot from growing larger or dislodging, potentially causing a life-threatening pulmonary embolism. While monitoring oxygen levels, applying compression stockings, and encouraging ambulation are important aspects of DVT management, administering anticoagulants is the most critical intervention to prevent further complications.