ATI RN
Questions for Respiratory System Questions
Question 1 of 5
All of the following shift the oxygen dissociation curve to the right EXCEPT
Correct Answer: C
Rationale: The correct answer is C: Carbon monoxide. Carbon monoxide binds to hemoglobin with a higher affinity than oxygen, shifting the oxygen dissociation curve to the left, not the right. Decreased pH, increased temperature, and increased 2,3 DPG all shift the curve to the right by decreasing hemoglobin's affinity for oxygen. This results in easier unloading of oxygen to tissues.
Question 2 of 5
A nurse instructs a female client to use the pursed-lip method of breathing and the client asks the nurse about the purpose of this type of breathing. The nurse responds, knowing that the primary purpose of pursed-lip breathing is to:
Correct Answer: D
Rationale: The correct answer is D: Promote carbon dioxide elimination. Pursed-lip breathing is a technique used to slow down breathing and help control shortness of breath. By exhaling through pursed lips, it creates back-pressure in the airways, allowing more time for the lungs to empty and facilitating better removal of carbon dioxide. This helps improve oxygenation by optimizing the gas exchange process. Choices A, B, and C are incorrect because pursed-lip breathing primarily focuses on improving ventilation and gas exchange, not specifically on increasing oxygen intake or strengthening specific respiratory muscles.
Question 3 of 5
An oxygen delivery system is prescribed for a client with chronic obstructive pulmonary disease to deliver a precise oxygen concentration. Which of the following types of oxygen delivery systems would the nurse anticipate to be prescribed?
Correct Answer: B
Rationale: The correct answer is B: Venturi mask. The Venturi mask delivers a precise oxygen concentration by mixing oxygen with room air through different sized ports, allowing for accurate oxygen delivery. This is important for patients with COPD who require specific oxygen levels to prevent oxygen toxicity or hypoxemia. A: Face mask delivers a less precise oxygen concentration and may not be suitable for patients who require exact oxygen levels. C: Aerosol mask is used for delivering medications or humidified air, not for precise oxygen concentration. D: Tracheostomy collar is used for patients with a tracheostomy and is not typically used for delivering precise oxygen concentration in COPD.
Question 4 of 5
The nurse is aware that the characteristic of emphysema that gives rise to the "Pink Puffer" label is the emphysemic patient's:
Correct Answer: D
Rationale: The correct answer is D: Normal ABGs. In emphysema, the destruction of alveoli leads to impaired gas exchange, causing respiratory acidosis and hypoxemia. However, "Pink Puffers" maintain normal or slightly low CO2 levels (normal ABGs) due to persistent hyperventilation. This compensatory mechanism helps them maintain adequate oxygen levels despite damaged alveoli. Dyspnea (choice A) and barrel chest (choice B) are common in emphysema but do not specifically contribute to the "Pink Puffer" label. Thin body (choice C) is associated with another type of COPD, chronic bronchitis.
Question 5 of 5
When you swallow, the epiglottis covers the opening to the
Correct Answer: C
Rationale: The correct answer is C: larynx. When you swallow, the epiglottis covers the opening to the larynx to prevent food or liquid from entering the airway and instead directs it towards the esophagus. The epiglottis acts as a protective mechanism to ensure that food goes down the correct pathway. Choices A (pharynx), B (esophagus), and D (bronchus) are incorrect because the epiglottis does not directly cover the opening to these structures during swallowing. The epiglottis specifically functions to protect the larynx and the airway during the swallowing process.