PCCN - Pulmonary Care and Disorders Questions and Answers — Questions and Answers
Question 1: A patient in the progressive care unit is being treated for a severe exacerbation of chronic obstructive pulmonary disease (COPD). Which of the following assessment findings would indicate the most urgent need for intervention?
- Use of accessory muscles and a respiratory rate of 28 breaths/min
- Decreased level of consciousness and confusion (Correct answer)
- Oxygen saturation of 91% on 2L nasal cannula
- Reports of increased sputum production and cough
Correct answer: Decreased level of consciousness and confusion
A decreased level of consciousness and confusion are signs of hypercapnia and severe respiratory distress, indicating impending respiratory failure. This is a life-threatening situation that requires immediate intervention, possibly including non-invasive or invasive mechanical ventilation. While the other options are concerning, they do not represent the same level of immediate threat as a change in mental status.
Question 2: A nurse is caring for a patient who was recently extubated after several days of mechanical ventilation. Which of the following parameters is the BEST indicator of the patient's readiness to be weaned from mechanical ventilation?
- PaO2 of 85 mmHg on FiO2 of 40%
- A rapid shallow breathing index (RSBI) of 95 (Correct answer)
- Tidal volume of 450 mL with a respiratory rate of 18 breaths/min
- Maximal inspiratory pressure (MIP) of -20 cm H2O
Correct answer: A rapid shallow breathing index (RSBI) of 95
The rapid shallow breathing index (RSBI), which is the ratio of respiratory frequency to tidal volume (f/VT), is a strong predictor of weaning success. An RSBI of less than 105 is a commonly accepted parameter indicating that a patient is likely to be successfully weaned. The other values, while important, are not as comprehensively predictive as the RSBI.
Question 3: A patient with acute respiratory distress syndrome (ARDS) is receiving mechanical ventilation with a low tidal volume strategy. What is the primary rationale for this intervention?
- To prevent hypotension and cardiovascular collapse.
- To reduce the risk of barotrauma and volutrauma. (Correct answer)
- To decrease the patient's work of breathing and improve comfort.
- To facilitate sedation and neuromuscular blockade.
Correct answer: To reduce the risk of barotrauma and volutrauma.
The primary goal of a low tidal volume ventilation strategy (typically 4-8 mL/kg of predicted body weight) in ARDS is to minimize ventilator-induced lung injury (VILI). High tidal volumes can overdistend and injure the less-affected alveoli, leading to volutrauma and barotrauma. Keeping plateau pressures below 30 cm H2O is a key component of this protective strategy.
Question 4: A 68-year-old male with a history of heart failure is admitted with a diagnosis of community-acquired pneumonia. He presents with a productive cough, fever of 38.9°C, and crackles in the right lower lobe. Which of the following orders should the nurse prioritize?
- Administer intravenous antibiotics.
- Obtain blood and sputum cultures.
- Administer PRN antipyretics.
- Titrate oxygen to maintain SpO2 > 92%. (Correct answer)
Correct answer: Titrate oxygen to maintain SpO2 > 92%.
While all orders are important, ensuring adequate oxygenation is the immediate priority according to the ABCs (Airway, Breathing, Circulation). Hypoxia is a common and life-threatening complication of pneumonia. Once oxygenation is stabilized, the nurse should proceed with obtaining cultures before administering antibiotics to ensure the correct pathogen is identified.
Question 5: Which of the following is a key nursing intervention for a patient admitted with a suspected pulmonary embolism (PE)?
- Encouraging frequent ambulation to improve circulation.
- Administering anticoagulation therapy as ordered.
- Placing the patient in a high Fowler's position. (Correct answer)
- Initiating a fluid bolus to improve cardiac output.
Correct answer: Placing the patient in a high Fowler's position.
Placing the patient in a high Fowler's position helps to maximize chest expansion and alleviate dyspnea, which is a common and distressing symptom of a pulmonary embolism. While anticoagulation is the cornerstone of treatment, immediate positioning to improve breathing is a critical initial nursing action. Ambulation is contraindicated as it could dislodge more clots. Fluid boluses should be given with caution as they can worsen right ventricular strain.
Question 6: A progressive care nurse is educating a patient being discharged after an asthma exacerbation. Which statement by the patient indicates a need for further teaching?
- "I will use my albuterol inhaler 15 minutes before I exercise."
- "I need to use my inhaled corticosteroid every day, even when I feel fine."
- "I should use my rescue inhaler more often if my symptoms get worse."
- "If I feel short of breath, I will take my oral prednisone immediately." (Correct answer)
Correct answer: "If I feel short of breath, I will take my oral prednisone immediately."
Oral corticosteroids like prednisone are not rescue medications for acute shortness of breath. They are used for managing more severe, prolonged exacerbations, typically as a prescribed tapering course. The patient should have a clear action plan that involves using their short-acting beta-agonist (rescue inhaler) for acute symptoms and seeking medical attention if symptoms do not improve. The other statements demonstrate correct understanding of asthma self-management.
PCCN - Pulmonary Care and Disorders Questions and Answers
A patient in the progressive care unit is being treated for a severe exacerbation of chronic obstructive pulmonary disease (COPD).
Which of the following assessment findings would indicate the most urgent need for intervention?