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. 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 nurse is caring for a client who has tuberculosis. Which of the following precautions should the nurse plan to implement when working with the client?
- A. Airborne
- B. Droplet
- C. Protective
- D. Contact
Correct answer: A
Rationale: Tuberculosis is an infectious disease that requires airborne precautions to prevent the transmission of infectious droplets. Airborne precautions involve wearing a mask, such as an N95 respirator, to protect against inhaling infectious particles. Droplet precautions are for diseases spread through respiratory droplets larger than those in airborne transmission, such as influenza. Protective precautions are not specific to respiratory infections and are more general measures to protect patients from harm. Contact precautions are used for diseases spread by direct or indirect contact, such as MRSA or C. diff infections, not for tuberculosis.
4. A charge nurse is assigning tasks to a nurse and assistive personnel for a group of clients. Which of the following tasks should the charge nurse delegate to the AP?
- A. Report ABG results to the provider
- B. Instruct a client about how to use an incentive spirometer
- C. Administer an enteral feeding to a client who has an established gastrostomy tube
- D. Monitor the color of a client’s urinary output
Correct answer: D
Rationale: The correct answer is D because monitoring the color of a client's urinary output is a task that can be safely delegated to assistive personnel. This task involves basic observation and does not require specialized nursing knowledge or skills. Choice A is incorrect because reporting ABG results to the provider requires interpretation and critical thinking skills typically performed by a nurse. Choice B is incorrect as instructing a client about how to use an incentive spirometer involves educating and assessing the client, which is a nursing responsibility. Choice C is incorrect as administering enteral feeding to a client with a gastrostomy tube requires nursing expertise to ensure proper technique and monitoring for complications.
5. The healthcare provider attaches a pulse oximeter to a client's fingers and obtains an oxygen saturation reading of 91%. Which assessment finding most likely contributes to this reading?
- A. BP 142/88 mmHg
- B. 2+ edema of fingers and hands
- C. Radial pulse volume is +3
- D. Capillary refill time is 2 seconds
Correct answer: B
Rationale: Edema, indicated by 2+ edema of fingers and hands, can impair blood flow and peripheral perfusion, leading to reduced oxygen saturation readings on a pulse oximeter. High blood pressure (choice A) would not directly affect oxygen saturation readings. Radial pulse volume (choice C) and capillary refill time (choice D) are more related to assessing circulation rather than contributing significantly to oxygen saturation readings.
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