Nursing Elites

1. What is the primary function of hemoglobin in red blood cells?

• A. Oxygen transport
• B. Immunity
• C. Blood clotting
• D. Carbon dioxide transport

Correct answer: A

Rationale: The correct answer is A: Oxygen transport. Hemoglobin in red blood cells binds to oxygen in the lungs and carries it to tissues throughout the body, releasing it where needed. This process is essential for cellular respiration and energy production. Choices B, C, and D are incorrect because hemoglobin's primary function is not related to immunity, blood clotting, or carbon dioxide transport. Hemoglobin's main role is to transport oxygen, ensuring adequate oxygen supply to body tissues for metabolic processes.

2. A full-term, 24-hour-old infant in the nursery regurgitates and suddenly turns cyanotic. Which immediate intervention should the PN implement?

• A. Stimulate the infant to cry
• B. Give oxygen by positive pressure
• C. Suction the oral and nasal passages
• D. Turn the infant onto the right side

Correct answer: C

Rationale: Suctioning the oral and nasal passages is the correct immediate intervention in this scenario. Regurgitation leading to cyanosis indicates a potential airway obstruction, which requires prompt action to clear. Stimulating the infant to cry (Choice A) may not address the underlying issue of airway obstruction. Giving oxygen by positive pressure (Choice B) can be beneficial, but clearing the airway obstruction takes precedence. Turning the infant onto the right side (Choice D) does not directly address the need to clear the airway.

3. A client post-thoracotomy is complaining of severe pain with deep breathing and coughing. What should the nurse encourage the client to do to manage the pain and prevent respiratory complications?

• A. Hold a pillow against the chest while coughing (splinting).
• B. Take shallow breaths to avoid pain.
• C. Increase the dose of pain medication.
• D. Avoid deep breathing exercises.

Correct answer: A

Rationale: Splinting the chest with a pillow helps manage pain during deep breathing and coughing, which is essential to prevent respiratory complications such as atelectasis or pneumonia after thoracic surgery. Holding a pillow against the chest while coughing (splinting) supports the incision site and reduces the pain associated with deep breathing and coughing. Encouraging shallow breaths (Choice B) can lead to respiratory complications due to inadequate lung expansion. Increasing pain medication (Choice C) should be done based on healthcare provider orders and not solely for this situation. Avoiding deep breathing exercises (Choice D) can worsen respiratory function and increase the risk of complications.

4. 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.

5. Patients are coming into the emergency room as a result of an apartment house fire. You are examining a patient who is in distress but has no visible burn marks. You suspect that she is suffering from inhalation burns. Which of the following signs would NOT be associated with inhalation burns?

• A. Singed nasal hairs
• B. Conjunctivitis
• C. Hoarseness
• D. Clear sputum

Correct answer: D

Rationale: Clear sputum would not be associated with inhalation burns. Inhalation burns typically present with symptoms like singed nasal hairs, conjunctivitis, hoarseness, and possibly soot in sputum due to smoke inhalation. Clear sputum suggests that there is no significant inflammation or injury to the respiratory tract, which is not consistent with the typical findings in inhalation burns. The other choices are associated with inhalation burns: singed nasal hairs can occur due to exposure to hot air or gases, conjunctivitis can result from irritating substances in smoke, and hoarseness can be due to airway irritation.

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