HESI LPN
HESI Fundamentals Study Guide
1. 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.
2. A healthcare professional is caring for a client who has a prescription for a stool specimen to be sent to the laboratory to be tested for ova and parasites. Which of the following instructions regarding specimen collection should the healthcare professional provide to the assistive personnel?
- A. Collect at least 2 inches of formed stool.
- B. Wear sterile gloves while obtaining the specimen.
- C. Use a culturette for specimen collection.
- D. Record the date and time the stool was collected.
Correct answer: A
Rationale: To ensure accurate testing, a minimum amount of stool is required for specimen collection, typically at least 2 inches of formed stool. This amount provides an adequate sample for testing. Wearing sterile gloves is important for infection control but is not specifically required for stool specimen collection. Using a culturette is not typically necessary for collecting stool specimens. Recording the date and time the stool was collected is essential to ensure timely processing but does not directly impact the collection of the specimen itself.
3. Following major abdominal surgery, a client postoperative refuses to use the incentive spirometer. What is the nurse's priority?
- A. Determine the reason why the client is refusing to use the incentive spirometer.
- B. Insist that the client use the incentive spirometer.
- C. Administer pain medication to help the client use the spirometer.
- D. Document the refusal in the client’s medical record.
Correct answer: A
Rationale: The nurse's priority in this situation is to determine the reason why the client is refusing to use the incentive spirometer. By understanding the client's concerns or barriers, the nurse can address them effectively and encourage the client to use the spirometer for optimal postoperative recovery. Insisting that the client use the spirometer without understanding the underlying reason may lead to further resistance. Administering pain medication as a solution does not address the root cause of refusal and may not be necessary if pain is not the primary reason for refusal. Documenting the refusal is important but should come after understanding the client's perspective to provide appropriate care and follow-up.
4. During a mass casualty event, a nurse is caring for multiple clients. Which of the following clients is the nurse’s priority?
- A. A client who received crush injuries to the chest and abdomen and is expected to die.
- B. A client who has a 4-inch laceration to the head.
- C. A client who has partial-thickness and full-thickness burns to his face, neck, and chest.
- D. A client who has a fractured fibula and tibia.
Correct answer: C
Rationale: During a mass casualty event, the priority client for the nurse is the one with partial-thickness and full-thickness burns to the face, neck, and chest. Clients with severe burns in critical areas require immediate attention due to the potential for life-threatening complications such as airway compromise, fluid loss, and infection. Crush injuries and fractures, although serious, are generally less urgent in comparison and can be managed after addressing the burns. Therefore, the client with burns to the face, neck, and chest should be the nurse's priority over the other clients described.
5. The nurse is providing discharge teaching to a client who has a new prescription for digoxin (Lanoxin). Which statement by the client indicates a need for further teaching?
- A. I will take my pulse before taking the medication.
- B. I will take the medication at the same time every day.
- C. I should avoid taking antacids at the same time as this medication.
- D. I should eat foods high in potassium while taking this medication.
Correct answer: D
Rationale: The correct answer is D. Clients taking digoxin should avoid eating foods high in potassium, as this can affect the medication's efficacy. Choices A, B, and C are correct statements regarding digoxin administration and precautions, indicating the client's understanding of the medication and its management.
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