HESI LPN
HESI Fundamentals Practice Questions
1. The client is being taught how to use a peak flow meter. The nurse explains that this device should be used to:
- A. Determine oxygen saturation
- B. Measure forced expiratory volume
- C. Monitor the atmosphere for the presence of allergens
- D. Provide metered doses for inhaled bronchodilator
Correct answer: B
Rationale: A peak flow meter is used to measure forced expiratory volume, which helps in monitoring asthma. This measurement provides valuable information about how well the client's lungs are functioning and how narrow their airways are. Choice A is incorrect because determining oxygen saturation is typically done using a pulse oximeter. Choice C is incorrect as a peak flow meter is not used to monitor the atmosphere for allergens but rather to assess lung function. Choice D is incorrect as providing metered doses for inhaled bronchodilators is the function of a metered-dose inhaler, not a peak flow meter.
2. After performing foot care, the nurse checks the medical record and discovers that the patient has a disorder on the sole of the foot caused by a virus. Which condition did the nurse most likely observe?
- A. Corns
- B. A callus
- C. Plantar warts
- D. Athlete's foot
Correct answer: C
Rationale: The nurse most likely observed plantar warts, which appear on the sole of the foot and are caused by the papillomavirus. Corns (Choice A) and calluses (Choice B) are areas of thickened skin caused by pressure or friction and are not typically associated with viruses. Athlete's foot (Choice D) is a fungal infection that usually affects the skin between the toes and is not caused by a virus like plantar warts.
3. A client has a new cast on the left arm, and the nurse is assessing the client. Which of the following findings should the nurse report to the provider immediately?
- A. Increased warmth in the affected arm
- B. Itching under the cast
- C. Pain with passive movement
- D. Drainage on the cast
Correct answer: C
Rationale: The correct answer is C: Pain with passive movement. Pain with passive movement in a client with a new cast can indicate compartment syndrome, a serious condition where pressure builds up within the muscles, nerves, and blood vessels of the affected limb, potentially leading to tissue damage. Immediate reporting is crucial to prevent further complications. Increased warmth in the affected arm could be a normal inflammatory response to the injury and casting process. Itching under the cast is common and can be managed without immediate concern. Drainage on the cast may be expected initially after casting due to residual moisture from the setting process, but ongoing or excessive drainage should be monitored and reported if persistent.
4. During the physical assessment of a client, which technique should a nurse use when performing a Romberg's test?
- A. Touch the client's face with a cotton ball
- B. Apply a vibrating tuning fork to the client's forehead
- C. Have the client stand with arms at her sides and feet together
- D. Perform direct percussion over the area of the kidneys
Correct answer: C
Rationale: During a Romberg's test, the nurse assesses the client's balance. Having the client stand with arms at her sides and feet together is the correct technique. This position helps the nurse observe for swaying or loss of balance, indicating alterations in balance. Choices A and B are incorrect as they are not part of Romberg's test and do not assess balance. Choice D is also incorrect as direct percussion over the kidneys is not associated with a Romberg's test.
5. A nurse is preparing an infusion for a client who was hospitalized with deep-vein thrombosis. The orders read: 25,000 units of heparin in 250 mL of 0.9% sodium chloride to infuse at 800 units/hr. At what rate should the nurse set the infusion pump?
- A. 8 mL/hr
- B. 10 mL/hr
- C. 12 mL/hr
- D. 15 mL/hr
Correct answer: A
Rationale: To calculate the infusion rate, use the formula: (Desired units/hr / Total units) × Volume. In this case, it would be (800 units/hr / 25,000 units) × 250 mL = 8 mL/hr. Therefore, the nurse should set the infusion pump at 8 mL/hr. Choice B, 10 mL/hr, is incorrect because it does not match the calculated rate. Choices C and D, 12 mL/hr and 15 mL/hr respectively, are also incorrect as they do not align with the correct calculation based on the provided data.
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