ATI LPN
Critical Care Respiratory Questions Questions
Question 1 of 5
Which term refers to the exchange of oxygen and carbon dioxide at the alveolar level?
Correct Answer: C
Rationale: Diffusion is the process where oxygen moves from alveoli to blood and carbon dioxide moves from blood to alveoli, occurring at the alveolar-capillary membrane.
Question 2 of 5
A nurse hears crackles in a patient’s lungs. What does this suggest?
Correct Answer: B
Rationale: Crackles indicate fluid in alveoli, typical of pulmonary edema, not pneumothorax (collapsed lung), emphysema (air trapping), or asthma (wheezing).
Question 3 of 5
A patient with a pulse oximetry reading of 88% requires which intervention?
Correct Answer: B
Rationale: A pulse oximetry of 88% indicates hypoxemia (normal is 95-100%). Administering oxygen is the priority to correct low oxygen levels, over coughing, repositioning, or checking temperature.
Question 4 of 5
A nurse is caring for a patient with a tracheostomy. What is the priority intervention?
Correct Answer: C
Rationale: Suctioning as needed maintains airway patency in a tracheostomy, ensuring oxygenation, taking priority over monitoring, cleaning, or dressing changes.
Question 5 of 5
A nurse is teaching a patient with COPD about energy conservation. Which strategy is best?
Correct Answer: B
Rationale: Frequent rest breaks conserve energy in COPD, reducing oxygen demand, unlike vigorous exercise, avoiding breathing exercises, or fluid restriction.