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 client enters the emergency department unconscious via ambulance from the client's workplace. What document should be given priority to guide the direction of care for this client?
- A. The statement of client rights and the client self-determination act
- B. Orders written by the healthcare provider
- C. A notarized original copy of advance directives brought in by the partner
- D. The clinical pathway protocol of the agency and the emergency department
Correct answer: C
Rationale: In the scenario described, when a client arrives unconscious, priority should be given to a notarized original copy of advance directives brought in by the partner. Advance directives are legal documents that specify a person's healthcare wishes and decision-making preferences in advance. These directives guide healthcare providers in delivering care according to the client's preferences when the client is unable to communicate. The statement of client rights and the client self-determination act (Choice A) are important but do not provide specific care instructions. Orders written by the healthcare provider (Choice B) may not reflect the client's wishes. Clinical pathway protocols (Choice D) are valuable but do not address the individualized care preferences of the client.
3. A client with diabetes mellitus is being taught by a nurse about mixing regular and NPH insulin. Which of the following statements by the client indicates an understanding of the teaching?
- A. I should roll the NPH vial between my hands before drawing it up.
- B. I should draw up the NPH insulin before the regular insulin.
- C. I should inject air into the vial of regular insulin first.
- D. I should wait 10 minutes after mixing the insulin to inject it.
Correct answer: A
Rationale: The correct answer is A. Rolling the NPH vial between the hands before drawing it up ensures proper mixing of the insulin. Choice B is incorrect because regular insulin should be drawn up first to avoid contamination. Choice C is incorrect as injecting air into the vial of regular insulin is not necessary. Choice D is incorrect as there is no need to wait 10 minutes after mixing the insulin before injecting it.
4. The healthcare provider is educating a client about dietary changes to prevent the recurrence of calcium oxalate kidney stones. Which food should the provider advise the client to avoid?
- A. Spinach
- B. Bananas
- C. Chicken
- D. Rice
Correct answer: A
Rationale: The correct answer is A: Spinach. Spinach is high in oxalate, a compound that can contribute to the formation of calcium oxalate kidney stones. Therefore, advising the client to avoid spinach is crucial in reducing the risk of stone recurrence. Bananas (choice B) are not high in oxalate and do not directly contribute to the formation of calcium oxalate stones, so they do not need to be avoided. Similarly, choices C and D, chicken, and rice, are not typically associated with high oxalate content, making them safe choices and do not need to be avoided specifically to prevent calcium oxalate kidney stones.
5. A nurse on a medical-surgical unit is caring for a client who has a new prescription for wrist restraints. Which of the following actions should the nurse take?
- A. Pad the client’s wrists before applying the restraints
- B. Tie the restraints to the side rails of the bed
- C. Secure the restraints to the bed frame
- D. Use a quick-release knot to tie the restraints
Correct answer: A
Rationale: The correct action for the nurse to take when a client has a new prescription for wrist restraints is to pad the client’s wrists before applying the restraints. This is important to prevent skin breakdown and injury. Tying the restraints to the side rails of the bed (Choice B) is unsafe and can lead to potential harm for the client. Similarly, securing the restraints to the bed frame (Choice C) is not appropriate as it can restrict the client's movement and cause discomfort. Using a quick-release knot to tie the restraints (Choice D) is also incorrect as it may compromise the effectiveness of the restraints in ensuring client safety.
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