A 65-year-old adult with COPD exacerbation is receiving oxygen therapy via nasal cannula at 2 L/min. The patient's oxygen saturation is 88%, respiratory rate is 28 breaths/min, and the patient appears restless and irritable. What is the most appropriate nursing intervention?

Oxygen saturation 88% with tachypnea and restlessness indicates worsening hypoxia despite current therapy, requiring immediate provider notification for potential care escalation. Other interventions may be inadequate without provider assessment.

Clinical Context
This patient is presenting with an acute exacerbation of chronic obstructive pulmonary disease (AECOPD) characterized by hypoxemia (SpO₂ 88%), tachypnea (respiratory rate 28 breaths/min), and neuropsychiatric changes (restlessness and irritability). In the context of AECOPD, restlessness and irritability are not merely signs of anxiety or discomfort; they are critical early indicators of hypoxemia and hypercapnia affecting the central nervous system. This altered mental status signals a failure of the current oxygen delivery method to meet the patient's ventilatory and oxygenation demands, representing a clinical deterioration that requires immediate escalation beyond independent nursing oxygen titration.

Why Not Increase or Change Oxygen Delivery?
Options 1 and 2 propose independently increasing the fraction of inspired oxygen (FiO₂). While this may transiently improve the SpO₂ reading, it is a potentially dangerous intervention in AECOPD without immediate provider guidance. The restlessness and irritability suggest a developing depressed mental status, which the provided evidence identifies as a relative contraindication to certain therapies and a marker of severity ^[1]. In patients with chronic CO₂ retention, uncontrolled high-flow oxygen can suppress the hypoxic respiratory drive, leading to progressive hypercapnia, respiratory acidosis, and further deterioration of consciousness. The nurse’s scope of practice does not include independently making a clinical judgment to override a prescribed oxygen flow rate when the patient’s neurological status is declining; this constitutes a change in the patient's condition that requires a new medical evaluation.

The Critical Link: Altered Mental Status as a Severity Marker
The patient’s restlessness and irritability are manifestations of an altered mental status. The research by Fabbri et al. specifically examines patients with AECOPD and a decreased level of consciousness, noting that such a depressed mental status is a frequent complication of the exacerbation itself and represents a relative contraindication to standard first-line noninvasive ventilation (NIV) ^[1]. This directly informs the urgency of the nursing action. A new or worsening change in mental status in a patient with AECOPD is a sentinel event. It indicates that the patient may be progressing toward hypercapnic respiratory failure, a condition where the standard initial therapies (like a simple increase in oxygen or even a bronchodilator alone) may be insufficient, and the patient may require advanced support such as NIV or mechanical ventilation after a thorough assessment.

Prioritization of Nursing Action
Option 4, administering a prescribed bronchodilator, addresses the underlying bronchoconstriction and is a core component of AECOPD management. However, it does not address the immediate, life-threatening issue of deteriorating neurological status and potential ventilatory failure. In the nursing prioritization framework of airway, breathing, and circulation, a change in consciousness related to breathing takes precedence. The nurse must first ensure the patient is receiving the correct level of respiratory support. The most appropriate and safest action is to recognize that the current therapeutic regimen is failing, as evidenced by worsening clinical signs, and to immediately notify the healthcare provider for a comprehensive reassessment and new orders, which may include arterial blood gas analysis, titration of oxygen based on CO₂ levels, or initiation of NIV ^[1].