A nurse is caring for a 45-year-old patient with chronic obstructive pulmonary disease (COPD) who was admitted with acute exacerbation. The patient is receiving oxygen therapy at 2 L/min via nasal cannula and has been started on corticosteroids and bronchodilators. The patient presents with increased dyspnea, productive cough with thick yellow sputum, and reports feeling anxious about breathing difficulties. Vital signs: BP 130/80 mmHg, HR 105 bpm, RR 26/min, O2 sat 84% on room air, temp 101.5°F. Which nursing assessment finding requires the most immediate intervention?

Oxygen saturation below 90% with exertion indicates severe hypoxemia requiring immediate intervention to prevent respiratory failure. Other findings (HR, BP, temp) are less urgent.

Understanding the Priority: Oxygenation and the ABC Framework

In NCLEX-RN prioritization, the airway, breathing, and circulation (ABC) framework is fundamental. For a patient with an acute exacerbation of chronic obstructive pulmonary disease (AECOPD), the most immediate threat to life is profound hypoxemia. While the provided research abstracts focus on multidisciplinary interventions and the link between inflammation and psychological status, they reinforce a critical clinical point: the core of AECOPD management is addressing impaired gas exchange. The study by Chen et al. (2026) specifically examines how immune-inflammatory profiles are associated with exercise capacity and psychological status, but the underlying driver of both limitations is the body’s compromised ability to oxygenate tissues during an exacerbation . Therefore, a critical drop in oxygen saturation represents a direct failure of the “breathing” component and must be addressed first.

Analysis of the Correct Answer (Option 1)

An oxygen saturation (SpO2) of 88% on room air is a critical finding. This value is significantly below the acceptable target for a patient with COPD, which is typically 88-92%. The patient’s baseline SpO2 on admission was already a concerning 84% on room air, and the current reading indicates persistent, severe hypoxemia despite the initiation of oxygen therapy at 2 L/min via nasal cannula. This finding signals that the current oxygen delivery is insufficient to overcome the ventilation-perfusion (V/Q) mismatch and shunting caused by bronchospasm, mucus plugging, and airway inflammation. The immediate risk is cellular hypoxia leading to cardiac dysrhythmia, altered mental status, and respiratory arrest. The integrated care models described by Dou et al. (2026) aim to prevent precisely this type of decompensation that leads to readmission and mortality . The nurse’s most immediate intervention is to titrate the oxygen delivery device and flow rate, notify the provider, and stay with the patient to continuously monitor respiratory status.

Analysis of Incorrect Answers

Option 2: Heart rate of 102 beats per minute with occasional premature ventricular contractions (PVCs).
A heart rate of 102 bpm is a mild sinus tachycardia, an expected compensatory mechanism for hypoxemia, fever, and anxiety. Occasional PVCs can be triggered by hypoxemia or bronchodilator therapy. While this finding requires monitoring and documentation, it is a secondary effect. The primary cause—the profound hypoxemia identified in Option 1—must be corrected first. Once oxygenation improves, the cardiac irritability and rate will often resolve without direct intervention.

Option 3: Blood pressure of 145/90 mmHg with patient reporting mild headache.
A blood pressure of 145/90 mmHg is stage 1 hypertension. In the context of acute dyspnea and anxiety, a mild elevation is an expected sympathetic nervous system response. The headache could be related to hypertension, hypercapnia, or even a side effect of medication. While this assessment finding is not normal, it does not pose the same immediate threat to life as a critically low oxygen saturation. The nurse would address the hypoxemia first, as a rising partial pressure of carbon dioxide (PaCO2) from respiratory failure can also cause vasodilation and headache.

Option 4: Temperature of 100.8°F (38.2°C) with complaints of general malaise.
A temperature of 100.8°F and malaise are consistent with an infectious process driving the acute exacerbation, as evidenced by the patient’s thick yellow sputum. The research by Chen et al. (2026) highlights the role of systemic inflammation, marked by elevated IL-6 and IL-8, in worsening patient status . However, managing the fever is a lower priority than stabilizing the airway and breathing. The nurse will administer antipyretics and ensure cultures are obtained, but only after the immediate life-threatening hypoxemia is managed. The clinical pathway study by Dou et al. (2026) underscores that a structured response to exacerbations must prioritize respiratory stabilization to improve long-term outcomes .