what is the primary function of surfactant in the lungs
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Nursing Elites

HESI LPN

HESI PN Exit Exam

1. What is the primary function of surfactant in the lungs?

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 nurse is assessing a day-old infant for jaundice. Which of the following is the best method for this?

Correct answer: A

Rationale: The correct answer is A. Applying pressure over a bony area and evaluating the skin color after the pressure is removed is the most accurate method for assessing jaundice in a day-old infant. This technique helps in identifying any yellowing of the skin, which is a key indicator of jaundice. Choices B, C, and D are less effective methods for assessing jaundice in a newborn. Assessing the color of the hands and feet may not give a reliable indication of jaundice, while evaluating the tongue, arms, and legs are not as specific or accurate as applying pressure over a bony area.

3. A nurse is caring for a 60-year-old man who is scheduled to have coronary bypass surgery in the morning. He tells the nurse that he is afraid that he will die and he is scared of the surgery. What is the best reply for this nurse to give him?

Correct answer: C

Rationale: The best reply for the nurse to give the patient is option C: 'You’re scared?' This response reflects empathy and understanding, acknowledging the patient's feelings of fear. By directly addressing the patient's emotions, the nurse encourages further expression of concerns, which is crucial in providing emotional support. Choices A and D may come off as dismissive of the patient's feelings by downplaying his fear or shifting the focus to others' experiences. Choice B, although acknowledging the patient's fear, does not actively engage with the patient's emotions or encourage further discussion.

4. A nurse is completing a focused assessment of an older adult's skin. The nurse notes a crusted 0.7 cm lesion on the client's forehead. Which action should the nurse take in response to this finding?

Correct answer: A

Rationale: A crusted lesion, especially in an older adult, could be indicative of skin cancer or another serious condition. Therefore, reporting this finding to the healthcare provider is crucial for further evaluation and appropriate management. Placing an occlusive dressing (Choice B) could prevent proper assessment and treatment. Applying a warm compress (Choice C) may not be suitable for a suspicious skin lesion as it could worsen the condition. Explaining it as a normal skin change (Choice D) without proper evaluation can delay necessary interventions and potentially harm the patient.

5. An adult client is undergoing weekly external radiation treatments for breast cancer. Upon arrival at the outpatient clinic for a scheduled treatment, the client reports increasing fatigue to the nurse who is taking the client's vital signs. What action should the nurse implement?

Correct answer: D

Rationale: Fatigue is a common side effect of radiation therapy. In this scenario, the appropriate action for the nurse to take is to reinforce the importance of rest and adequate sleep. It is crucial to address the client's increasing fatigue by promoting self-care strategies such as additional rest periods and ensuring plenty of sleep. Rescheduling the treatment is not necessary for fatigue, and vital sign monitoring every 30 minutes may not directly address the client's reported symptom. Notifying the healthcare provider or charge nurse immediately is not the first-line intervention for increasing fatigue, as this symptom can be managed through education and self-care recommendations.

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