HESI LPN
HESI Fundamental Practice Exam
1. A nurse is planning care for a client who has a prescription for knee-length anti-embolic stockings. Which of the following actions should the nurse take?
- A. Remove the client’s stockings at least once during each shift
- B. Roll the top of the client’s stockings down to just below the knee
- C. Seat the client in a chair for 30 minutes prior to applying stockings
- D. Measure the length of the client’s leg from the heel to the gluteal fold
Correct answer: A
Rationale: The correct action for the nurse to take is to remove the client’s stockings at least once during each shift. This is important to inspect the skin and prevent complications such as pressure injuries or impaired circulation. Rolling the top of the stockings down can compromise their effectiveness in preventing blood clots. Seating the client in a chair prior to applying stockings is not directly related to the care of anti-embolic stockings. Measuring the length of the client’s leg from the heel to the gluteal fold is not necessary for the application or care of knee-length anti-embolic stockings.
2. Which of the following statements is true of mutations?
- A. Mutations can only occur by chance.
- B. Mutations produce sperm and ova cells.
- C. Mutations occur through radiation or other environmental influences.
- D. Mutations help adenine combine with guanine to form the single spiral structure of DNA.
Correct answer: C
Rationale: The correct answer is C. Mutations can occur due to environmental influences such as radiation, chemicals, or other external factors, leading to changes in the DNA sequence. Choice A is incorrect because mutations can also occur due to errors in DNA replication, not solely by chance. Choice B is incorrect as mutations affect the DNA sequence itself, not the production of specific cells. Choice D is incorrect because mutations involve changes in the DNA sequence and do not specifically involve the formation of the DNA structure.
3. A client was admitted with a diagnosis of pneumonia. When auscultating the client's breath sounds, the nurse hears inspiratory crackles in the right base. Temperature is 102.3 degrees Fahrenheit orally. What finding would the nurse expect?
- A. Flushed skin
- B. Bradycardia
- C. Mental confusion
- D. Hypotension
Correct answer: C
Rationale: The correct answer is C: Mental confusion. In this scenario, the client's high fever and pneumonia diagnosis indicate an infection. Infections, especially in older adults, can lead to mental confusion due to the body's systemic response to the infection. Flushed skin (choice A) is more commonly associated with fever but does not specifically relate to the client's condition. Bradycardia (choice B) and hypotension (choice D) are less likely findings in a client with pneumonia and a high fever; instead, tachycardia and increased blood pressure are more commonly seen in response to infection.
4. What is one benefit of using controls in an experiment?
- A. The size of the groups does not matter.
- B. The subjects are unaware of the experiment's details.
- C. The subjects who are treated are balanced against the placebos.
- D. The subjects are similar in all respects except for the treatment being tested.
Correct answer: D
Rationale: The correct answer is D. Controls in an experiment ensure that the subjects are similar in all respects except for the treatment being tested. This allows for a fair comparison between the treatment group and the control group. Choice A is incorrect because the size of the groups is not the primary benefit of using controls. Choice B is incorrect as blinding, not controls, refers to subjects not knowing about the experiment. Choice C is incorrect as it pertains more to randomization than the use of controls.
5. After an infant has had corrective surgery for hypertrophic pyloric stenosis (HPS), what should the nurse teach a parent to do immediately after a feeding to limit vomiting?
- A. Rock the infant.
- B. Place the infant in an infant seat.
- C. Place the infant flat on the right side.
- D. Keep the infant awake with sensory stimulation.
Correct answer: B
Rationale: Correct Answer: B. Placing the infant in an infant seat is essential after feeding to help keep the head elevated and reduce the risk of vomiting. This position helps prevent regurgitation of formula or milk. Rocking the infant (Choice A) is incorrect because it may exacerbate vomiting due to the movement. Placing the infant flat on the right side (Choice C) is incorrect as it does not promote proper digestion and can increase the risk of vomiting. Keeping the infant awake with sensory stimulation (Choice D) is incorrect as it does not directly address the physiological need to reduce vomiting after feeding.