ATI RN
Questions on the Respiratory System Questions
Question 1 of 5
An oxygen delivery system is prescribed for a male 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. This type of oxygen delivery system allows for precise oxygen concentration delivery by adjusting the oxygen flow rate and selecting the appropriate color-coded adaptor. Venturi masks are commonly used in clients with COPD to ensure accurate oxygen delivery and prevent oxygen toxicity. A: Face tent provides high humidity but does not allow for precise oxygen concentration delivery. C: Aerosol mask is used for humidification and medication delivery, not for precise oxygen concentration. D: Tracheostomy collar is used for clients with a tracheostomy, not for precise oxygen concentration in COPD.
Question 2 of 5
When the nurse reads the diagnosis of centrilobar emphysema, the nurse recognizes that this type of emphysema is characterized by:
Correct Answer: B
Rationale: The correct answer is B because centrilobar emphysema is characterized by enlarged and broken down bronchioles with intact alveoli. This type of emphysema primarily affects the respiratory bronchioles and alveolar ducts in the upper lung lobes. The other choices are incorrect because: A) Significant smoking history is usually present in patients with centrilobar emphysema. C) Hypoelastic bronchi and bronchioles are not characteristic of centrilobar emphysema. D) Deficiency of the enzyme inhibitor alpha-1 antitrypsin is associated with a different type of emphysema called panlobar emphysema, not centrilobar emphysema.
Question 3 of 5
The lungs move easily within their protective sacs due to
Correct Answer: A
Rationale: The correct answer is A: intrapleural fluid. Intrapleural fluid reduces friction between the lungs and the chest wall, allowing them to move easily during breathing. This fluid creates a lubricated surface that facilitates smooth movement. Leaking plasma (B) and mucus (D) do not provide the necessary lubrication for lung movement. Blood (C) plays a role in oxygen exchange but does not directly contribute to the ease of lung movement within the pleural sacs.
Question 4 of 5
Carbonic anhydrase
Correct Answer: D
Rationale: Carbonic anhydrase catalyzes the reversible reaction between carbon dioxide and water to form carbonic acid, which then dissociates into bicarbonate and hydrogen ions. It is indeed found in red blood cells, aiding in CO2 transport. Therefore, all the statements are true, making option D the correct answer.
Question 5 of 5
The volume of air that can be exhaled after normal exhalation is the
Correct Answer: D
Rationale: The correct answer is D: expiratory reserve volume. After normal exhalation (tidal volume), the expiratory reserve volume represents the additional volume of air that can be forcefully exhaled. This volume is used during activities requiring increased breathing effort. Choices A and C are incorrect because tidal volume is the volume of air inhaled or exhaled during normal breathing, and inspiratory reserve volume is the extra volume of air that can be inhaled after a normal inhalation. Choice B, residual volume, is the volume of air remaining in the lungs after maximal exhalation and cannot be exhaled voluntarily.