HESI LPN
HESI Fundamental Practice Exam
1. A healthcare professional is preparing to administer dextrose 5% in water (D5W) 1,000-mL IV to infuse over 10 hr. How many mL/hr should the IV infusion pump be set to deliver? (Round the answer to the nearest whole number. Do not use a trailing zero.)
- A. 100 mL/hr
- B. 150 mL/hr
- C. 75 mL/hr
- D. 50 mL/hr
Correct answer: A
Rationale: To infuse 1,000 mL over 10 hr, the IV pump should be set to deliver 100 mL/hr. This calculation is derived by dividing the total volume (1,000 mL) by the total time in hours (10 hr), resulting in the infusion rate of 100 mL/hr. Choices B, C, and D are incorrect as they do not accurately reflect the correct calculation for this scenario.
2. An unlicensed assistive personnel (UAP) places a client in a left lateral position before administering a soap suds enema. Which instruction should the LPN/LVN provide the UAP?
- A. Position the client on the right side of the bed in reverse Trendelenburg.
- B. Fill the enema container with 1000 ml of warm water and 5 ml of castile soap.
- C. Reposition the client in a Sim's position with the weight on the anterior ilium.
- D. Raise the side rails on both sides of the bed and elevate the bed to waist level.
Correct answer: C
Rationale: The correct instruction the LPN/LVN should provide to the UAP is to reposition the client in a Sim's position with the weight on the anterior ilium for administering a soap suds enema. This position helps facilitate the administration of the enema by providing better access and comfort for the client. Choice A is incorrect as reverse Trendelenburg is not the appropriate position for administering a soap suds enema. Choice B is incorrect as the concentration of soap in the enema solution is not specified and might be too strong. Choice D is incorrect as raising the side rails and elevating the bed does not directly relate to the proper positioning for administering the enema.
3. An elderly male client who suffered a cerebral vascular accident is receiving tube feedings via a gastrostomy tube. The LPN knows that the best position for this client during administration of the feedings is
- A. prone.
- B. Fowler's.
- C. Sims'.
- D. supine.
Correct answer: B
Rationale: Fowler's position is the optimal position for a client receiving tube feedings via a gastrostomy tube because it reduces the risk of aspiration. In Fowler's position, the client is sitting up at a 45- to 60-degree angle, which helps prevent the formula from flowing back into the esophagus and causing aspiration pneumonia. Choice A, prone position (lying face down), would not be suitable for administering tube feedings as it increases the risk of aspiration. Sims' position (lying on the left side with the right knee flexed) and supine position (lying flat on the back) are also not ideal for administering tube feedings as they do not provide the same level of protection against aspiration as Fowler's position does.
4. A client with a history of severe anxiety is scheduled for surgery. Which preoperative medication is the most appropriate for the LPN/LVN to administer to this client?
- A. Lorazepam (Ativan)
- B. Morphine sulfate
- C. Meperidine (Demerol)
- D. Promethazine (Phenergan)
Correct answer: A
Rationale: Lorazepam (Ativan) is the most appropriate preoperative medication for a client with severe anxiety. Lorazepam belongs to the benzodiazepine class and is commonly used to manage anxiety before surgical procedures due to its anxiolytic properties. Morphine sulfate and Meperidine (Demerol) are opioid analgesics, not typically indicated for preoperative anxiety. Promethazine (Phenergan) is an antihistamine used for nausea and vomiting, not anxiety management.
5. A nurse in a provider's office is preparing to assess a young adult client's musculoskeletal system as part of a comprehensive physical examination. Which of the following findings should the nurse expect?
- A. Concave thoracic spine posteriorly
- B. Exaggerated lumbar curvature
- C. Concave lumbar spine posteriorly
- D. Exaggerated thoracic curvature
Correct answer: B
Rationale: When assessing a young adult's musculoskeletal system, the nurse should expect an exaggerated lumbar curvature (lordosis). This is a normal finding in young adults due to the natural curvature of the spine. Concave thoracic spine posteriorly (choice A) and concave lumbar spine posteriorly (choice C) are not typical findings as the spine should have normal curvatures. Exaggerated thoracic curvature (choice D) is also not a typical finding in young adults.
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