A 65-year-old patient with COPD is receiving oxygen via nasal prongs at 4 L/min. Over the past hour, the nurse observes increasing wheezing, use of accessory muscles, and SpO₂ dropping to 86% despite oxygen therapy. What is the next best action?

1. A

   Start nebulized salbutamol/ipratropium immediately

2. B

   Apply oxygen at 10 L/min

3. C

   Use a BiPAP mask

4. D

   Intubate the patient

Appeared in: NORCET 9 Mains - 2025

Explanation

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• The patient is showing clear signs of impending respiratory failure, including accessory muscle use (muscle fatigue) and refractory hypoxemia (low SpO2 despite oxygen).
• The immediate priority in this life-threatening situation is to provide ventilatory support to reduce the work of breathing and improve gas exchange.
• BiPAP (Bilevel Positive Airway Pressure) is the standard first-line, non-invasive intervention for conscious patients with COPD exacerbation and respiratory distress.
• BiPAP provides positive pressure to assist with both inspiration and expiration, which rests the fatigued respiratory muscles, improves alveolar ventilation, and can prevent the need for invasive intubation.

Why Other Options Were Wrong

• Option A: While essential for treating bronchospasm, nebulizers do not address the primary, life-threatening problem of ventilatory failure due to muscle fatigue. The patient cannot effectively move air in and out.
• Option B: Applying high concentrations of oxygen to a COPD patient can be dangerous. It may suppress their hypoxic respiratory drive, leading to decreased breathing effort, increased CO2 retention (hypercapnia), and respiratory acidosis.
• Option D: Intubation is an invasive procedure with significant risks. It is reserved for patients who have failed a trial of non-invasive ventilation (BiPAP), are unconscious, cannot protect their airway, or are hemodynamically unstable.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Management of Acute COPD Exacerbation with Impending Respiratory Failure to guide bedside assessment, documentation, and the next nursing action.
• Nurses on medical-surgical and critical care units must be proficient in recognizing the subtle signs of impending respiratory failure in COPD patients, such as increased accessory muscle use and oxygen desaturation that doesn't respond to simple increases in flow rate.
• Prompt initiation of non-invasive ventilation like BiPAP is a critical nursing-driven intervention (in collaboration with respiratory therapy and physicians) that can prevent intubation, reduce ICU length of stay, and decrease mortality.
• What if? If the patient in the scenario was also noted to be lethargic and unable to follow commands, BiPAP would be contraindicated due to the risk of aspiration. In that case, preparing for immediate intubation (Option D) would become the priority action.

How to Approach the Question

• First, analyze the patient's diagnosis and baseline: a 65-year-old with COPD already on oxygen.
• Next, identify the acute changes indicating deterioration: increasing wheezing, use of accessory muscles, and SpO2 dropping to 86% despite oxygen.
• Synthesize these signs. The combination of accessory muscle use (muscle fatigue) and refractory hypoxemia (failing gas exchange) points directly to impending ventilatory failure, not just a simple oxygenation or bronchospasm problem.
• Prioritize the problem. The most immediate life threat is the failure of the respiratory muscles. Therefore, the intervention must support the mechanics of breathing.
• Evaluate the options against this priority. BiPAP directly supports ventilation. Nebulizers help airflow but don't support the muscles. High-flow O2 is dangerous. Intubation is a later step.
• Select the option that addresses the primary problem of ventilatory failure, which is using a BiPAP mask.

Concept Tested & Keywords

• Concept Tested: Management of Acute COPD Exacerbation with Impending Respiratory Failure
• Stem keywords: COPD, oxygen therapy, wheezing, use of accessory muscles, SpO2 86%
• Lead-in keywords: next best action
• Clinical cues: Use of accessory muscles signifies respiratory muscle fatigue.
• Clinical cues: SpO2 of 86% despite oxygen therapy indicates refractory hypoxemia and ventilatory failure.

Question ID

Q3X5-5ql01toiLGvZIUTIN

Copy ID

Reference Book

E6 Medicine Davidson Principles Practice 24e p. 597-599

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 p. 37-39