HESI LPN
HESI Fundamentals Study Guide
1. A client has been admitted to the hospital with severe diarrhea. The nurse should monitor the client for which complication?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Hyperkalemia
- D. Hypercalcemia
Correct answer: A
Rationale: Severe diarrhea can lead to metabolic acidosis due to the loss of bicarbonate. When there is excessive loss of bicarbonate through diarrhea, the pH of the blood decreases, leading to metabolic acidosis. Metabolic alkalosis (Choice B) is not typically associated with severe diarrhea as it involves elevated pH and bicarbonate levels. Hyperkalemia (Choice C) is less likely with severe diarrhea as potassium is often lost along with fluids. Hypercalcemia (Choice D) is not a common complication of severe diarrhea; instead, hypocalcemia may occur due to malabsorption of calcium.
2. What intervention can help prevent atelectasis and pneumonia in a client with amyotrophic lateral sclerosis?
- A. Active and passive range of motion exercises twice a day
- B. Every 4 hours incentive spirometer
- C. Chest physiotherapy twice a day
- D. Repositioning every 2 hours around the clock
Correct answer: C
Rationale: Chest physiotherapy is essential for clients with amyotrophic lateral sclerosis (ALS) to prevent atelectasis and pneumonia. Chest physiotherapy aids in clearing secretions, maintaining lung function, and preventing respiratory complications. Active and passive range of motion exercises (Choice A) are important for maintaining joint mobility but are not directly associated with preventing atelectasis and pneumonia in ALS. Incentive spirometer use every 4 hours (Choice B) is beneficial for lung expansion and preventing atelectasis but may not be as effective as chest physiotherapy in managing secretions. Repositioning every 2 hours (Choice D) is crucial for preventing pressure ulcers but is not directly related to preventing atelectasis and pneumonia in ALS.
3. When using an open irrigation technique for a client's catheter, what action should the nurse take?
- A. Subtract the amount of irrigant used from the client's urine output.
- B. Add the amount of irrigant used to the urine output measurement.
- C. Measure the amount of irrigant used separately from the urine output.
- D. Document the total amount of fluid used for irrigation only.
Correct answer: A
Rationale: The correct action for the nurse to take when using an open irrigation technique for a client's catheter is to subtract the amount of irrigant used from the client's urine output. This subtraction helps accurately assess the client's output by accounting for the volume of irrigant introduced. Choice B is incorrect because adding the irrigant to the urine output measurement would falsely inflate the total output, leading to inaccurate assessment. Choice C is incorrect as measuring the amount of irrigant separately does not provide an accurate assessment of the client's total output as it disregards the irrigant's contribution. Choice D is incorrect as documenting the total fluid used for irrigation only does not differentiate between the irrigant and the client's actual urine output, which is crucial for accurate monitoring and assessment.
4. A nurse is evaluating a client’s use of a cane. What is the correct use?
- A. Client holds the cane on the stronger side of the body.
- B. Client holds the cane on the weaker side of the body.
- C. Client holds the cane in front of the weaker side of the body.
- D. Client holds the cane in front of the stronger side of the body.
Correct answer: A
Rationale: The correct way to use a cane is for the client to hold it on the stronger side of the body. This positioning allows the cane to provide support to the weaker side, assisting with balance and stability. Placing the cane on the weaker side (Choice B) may not provide adequate support and could lead to an increased risk of falls. Holding the cane in front of the weaker side (Choice C) or in front of the stronger side (Choice D) does not optimize the support and stability needed while walking with a cane.
5. When admitting a 5-month-old who has vomited 9 times in the past 6 hours, what should the healthcare provider observe for signs of which overall imbalance?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Increased serum hemoglobin levels
- D. Decreased serum potassium levels
Correct answer: B
Rationale: When a 5-month-old infant vomits multiple times, there is a risk of developing metabolic alkalosis due to the loss of stomach acid. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. It is caused by the loss of hydrogen ions from the body, often through vomiting. Metabolic acidosis (choice A) is unlikely in this scenario because it is more commonly associated with conditions like renal failure or diabetic ketoacidosis. Choice C, increased serum hemoglobin levels, is not typically a direct consequence of vomiting. Choice D, decreased serum potassium levels, may occur with vomiting but is not the primary concern when a patient is vomiting excessively.
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