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. The client is receiving total parenteral nutrition (TPN). Which laboratory value should the LPN/LVN monitor closely to assess for complications?
- A. Serum potassium
- B. Blood glucose
- C. Serum sodium
- D. Serum calcium
Correct answer: B
Rationale: The correct answer is B: Blood glucose. When caring for a client receiving total parenteral nutrition (TPN), monitoring blood glucose levels is essential due to the risk of hyperglycemia. TPN solutions are high in glucose, and clients may be at risk of developing hyperglycemia if the infusion rate is too high or if there are underlying issues such as insulin resistance. Monitoring serum potassium (choice A) is important but not the most crucial value to monitor in clients receiving TPN. Serum sodium (choice C) and serum calcium (choice D) are not directly impacted by TPN administration and are less likely to be affected compared to blood glucose levels.
3. A client is receiving morphine via PCA infusion device after abdominal surgery. Which of the following statements indicates that the client knows how to use the device?
- A. I'll wait to use the device until it's absolutely necessary.
- B. I'll be careful about pushing the button too much to avoid an overdose.
- C. I should tell the nurse if the pain doesn't stop while I am using this device.
- D. I will ask my adult child to push the dose button when I am sleeping.
Correct answer: C
Rationale: Choice C is the correct answer because it demonstrates that the client understands the importance of communicating with the nurse if the pain persists while using the PCA device. This is crucial as it ensures proper pain management and monitoring. Choices A and B are incorrect because delaying the use of the device until necessary or being cautious about pushing the button too much do not necessarily reflect understanding of using the PCA device effectively. Choice D is incorrect as having someone else, like an adult child, push the dose button goes against the principle of the client self-administering the medication through the PCA device.
4. During a skin assessment, a client expresses concern about skin cancer. What findings should the nurse identify as a potential indication of a skin malignancy?
- A. A mole with an asymmetrical appearance.
- B. A mole with a regular border.
- C. A mole that is the same color throughout.
- D. A mole that is smaller than 6mm in diameter.
Correct answer: A
Rationale: The correct answer is A: A mole with an asymmetrical appearance. Asymmetry is a key characteristic of potential skin malignancy. An asymmetrical mole does not have a uniform shape when divided in half. This irregularity raises suspicion for skin cancer. Choices B, C, and D are incorrect. A mole with a regular border (B) is more likely to be benign. A mole that is the same color throughout (C) is also a feature commonly seen in benign moles. Additionally, a mole smaller than 6mm in diameter (D) is not necessarily indicative of malignancy, as some melanomas can be smaller or larger than this size.
5. A charge nurse is assigning client care for four clients. Which of the following tasks should the nurse assign to a PN?
- A. Creating a plan of care for a client who is recovering following a stroke.
- B. Assessing a pressure injury on a client who is on bed rest.
- C. Providing nasopharyngeal suctioning for a client who has pneumonia.
- D. Teaching a client who has asthma to use a metered-dose inhaler.
Correct answer: C
Rationale: The correct answer is providing nasopharyngeal suctioning for a client who has pneumonia. This task falls within the practical nurse's scope of practice, as it involves direct patient care and basic interventions. Creating a plan of care for a client recovering from a stroke involves critical thinking and comprehensive assessment, which are typically responsibilities of registered nurses. Assessing a pressure injury requires specialized wound care knowledge, often performed by wound care specialists or registered nurses with wound care training. Teaching a client to use a metered-dose inhaler involves patient education and requires a thorough understanding of asthma management, making it more suitable for a registered nurse.
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