HESI LPN
HESI Fundamentals Exam
1. A healthcare professional is preparing to administer 750 mL of 0.9% sodium chloride IV to infuse over 7 hours. The healthcare professional should set the pump to deliver how many mL/hr?
- A. 107 mL/hr
- B. 75 mL/hr
- C. 90 mL/hr
- D. 60 mL/hr
Correct answer: A
Rationale: To calculate the mL/hr rate for the infusion, divide the total volume (750 mL) by the total time (7 hours). 750 mL ÷ 7 hours = 107 mL/hr. This means that the pump should be set to deliver approximately 107 mL/hr. Choice B (75 mL/hr) is incorrect because it does not reflect the correct calculation. Choice C (90 mL/hr) is incorrect as it does not align with the accurate calculation. Choice D (60 mL/hr) is incorrect as it does not match the correct mL/hr rate obtained through the calculation.
2. A nurse is preparing to administer ketorolac 0.5 mg/kg IV bolus every 6 hr to a school-age child who weighs 66 lb. The available ketorolac injection is 30 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
- A. 0.5 mL
- B. 1 mL
- C. 1.5 mL
- D. 2 mL
Correct answer: A
Rationale: To calculate the dose, first convert the weight from pounds to kilograms. The child weighs 66 lb, which is approximately 30 kg. The prescribed dose is 0.5 mg/kg, so for a 30 kg child, the dose would be 0.5 mg/kg x 30 kg = 15 mg. Since the available ketorolac injection is 30 mg/mL, the nurse should administer 15 mg ÷ 30 mg/mL = 0.5 mL per dose. Therefore, choice A (0.5 mL) is the correct answer. Choices B, C, and D are incorrect as they do not accurately calculate the correct dose based on the child's weight and the concentration of the ketorolac injection.
3. A client with chronic back pain asks a nurse about receiving acupuncture for relief. Which of the following findings should the nurse identify as a contraindication to receiving this treatment?
- A. Obesity
- B. Hypertension
- C. Migraines
- D. Cellulitis
Correct answer: D
Rationale: The correct answer is D, Cellulitis. Cellulitis is a contraindication for acupuncture due to the risk of infection. Acupuncture involves inserting needles into the skin, and if a person has cellulitis, which is a bacterial skin infection, there is a higher risk of introducing the infection deeper into the body. Obesity (choice A), hypertension (choice B), and migraines (choice C) are not contraindications for receiving acupuncture. These conditions do not pose a direct risk of complications related to acupuncture treatment.
4. What instruction should the nurse provide a pregnant client experiencing heartburn?
- A. Limit fluid intake between meals to prevent stomach over-distension
- B. Take an antacid at bedtime and when symptoms worsen
- C. Maintain an upright position for two hours after eating
- D. Eat small meals throughout the day to avoid a full stomach
Correct answer: D
Rationale: The correct answer is D: 'Eat small meals throughout the day to avoid a full stomach.' Heartburn is common in pregnancy due to increased intra-abdominal pressure and hormonal changes. Consuming small, frequent meals prevents the stomach from becoming overly full, reducing the likelihood of acid reflux and heartburn. Choice A is incorrect because limiting fluid intake between meals may not significantly impact heartburn. Choice B is not ideal as antacids should be taken as directed by a healthcare provider, not just at bedtime or when symptoms worsen. Choice C is less effective advice, as maintaining an upright position after eating may not directly address the root cause of heartburn.
5. A client scheduled for a hysterectomy has not yet signed the operative consent form. When the nurse approaches the client and asks that she review and sign the form, the client says she no longer wants to have the surgery. At this time, which action should the nurse take?
- A. Ask the client why she has changed her mind
- B. Proceed with the surgery
- C. Notify the surgeon immediately
- D. Document the client’s decision
Correct answer: A
Rationale: The correct action for the nurse to take in this situation is to ask the client why she has changed her mind. By understanding the client's reasons for refusal, the nurse can address any concerns, provide further information, and ensure that the client's decision is respected. Proceeding with the surgery without clarifying the client's decision or notifying the surgeon immediately would not be appropriate. Documenting the client's decision is important, but it should be done after understanding the rationale behind the decision.