HESI LPN
HESI PN Exit Exam
1. What is the primary function of surfactant in the lungs?
- A. Reduce surface tension
- B. Enhance oxygen absorption
- C. Facilitate carbon dioxide release
- D. Increase lung volume
Correct answer: A
Rationale: The primary function of surfactant in the lungs is to reduce surface tension in the alveoli. This reduction in surface tension prevents lung collapse and allows for easier breathing. It is particularly crucial in premature infants to help with lung expansion. Choice B is incorrect because surfactant primarily affects surface tension, not oxygen absorption. Choice C is incorrect because surfactant's main role is not in facilitating carbon dioxide release. Choice D is incorrect because surfactant does not directly increase lung volume; its main role is in reducing surface tension.
2. A client with blood type AB negative delivers a newborn with blood type A positive. The cord blood reveals a positive indirect Coombs test. Which is the implication of this finding?
- A. The newborn is infected with an infectious blood-borne disease
- B. The newborn needs phototherapy for physiologic jaundice
- C. The mother's Rh antibodies are present in the neonatal blood
- D. The mother no longer needs Rho immune globulin injections
Correct answer: C
Rationale: A positive indirect Coombs test indicates that the mother's Rh antibodies have crossed the placenta and are present in the neonatal blood, which can lead to hemolytic disease of the newborn. This finding necessitates close monitoring and potential intervention. Choice A is incorrect because a positive Coombs test does not indicate an infectious blood-borne disease. Choice B is incorrect as phototherapy for physiologic jaundice is not related to a positive Coombs test result. Choice D is incorrect because a positive Coombs test does not indicate that the mother no longer needs Rho immune globulin injections; in fact, it suggests a need for further management to prevent hemolytic disease of the newborn.
3. Rehabilitation after illness is classified under which level of healthcare?
- A. Primary
- B. Secondary
- C. Tertiary
- D. All three
Correct answer: C
Rationale: Rehabilitation after illness is classified as tertiary care. Tertiary care aims to help patients recover from illness, injuries, or disabilities, and restore their functionality. Primary care involves preventive measures and early disease detection, while secondary care focuses on diagnosis and treatment of specific conditions. Therefore, choices A, B, and D are incorrect as they do not specifically address the specialized nature of rehabilitation in healthcare.
4. Which nursing intervention is most appropriate for managing delirium in an elderly patient?
- A. Keeping the room brightly lit
- B. Administering sedatives as needed
- C. Encouraging family presence
- D. Restricting fluids
Correct answer: C
Rationale: Encouraging family presence is the most appropriate intervention for managing delirium in elderly patients. This intervention provides orientation, reassurance, and comfort, which can help reduce confusion and anxiety, thus aiding in managing delirium. Keeping the room brightly lit (Choice A) may worsen delirium as it can disrupt the patient's sleep-wake cycle. Administering sedatives (Choice B) should be avoided unless absolutely necessary due to the risk of worsening delirium. Restricting fluids (Choice D) is not a recommended intervention for managing delirium, as hydration is important for overall patient well-being.
5. The PN is caring for a client who had an acute brain attack with resulting expressive aphasia and urinary incontinence. To ensure care for the client, which task should the PN delegate to the UAP?
- A. Explain how to use a communication board
- B. Document progress in the use of the communication board
- C. Encourage voiding by assisting the client to the bedside commode
- D. Establish a bladder training schedule and methods
Correct answer: C
Rationale: Assisting the client to the bedside commode is an appropriate task for the UAP as it involves basic patient care and mobility assistance, which are within the UAP's scope of practice. Options A and B involve communication techniques and documentation, which are more appropriate for licensed nursing staff. Option D involves establishing a bladder training schedule, which requires assessment and planning skills beyond the UAP's role.
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