A patient with COPD is receiving oxygen at 6 L/min via nasal cannula and develops dizziness and altered level of consciousness. What is the priority nursing intervention?

1. A

   Reduce FiO₂ and notify the physician

2. B

   Increase FiO₂

3. C

   Encourage deep breathing exercises

4. D

   Place the patient in supine position

Appeared in: NORCET 10 Mains

Explanation

Listen in Hindi

• In some patients with chronic COPD, the primary stimulus to breathe is hypoxia (low oxygen), not hypercapnia (high CO2). This is known as the 'hypoxic drive'.
• Administering high concentrations of oxygen (6 L/min is considered high for this population) can suppress this hypoxic drive, leading to decreased respiratory rate and effort.
• This hypoventilation causes retention of carbon dioxide (hypercapnia), leading to respiratory acidosis and neurological symptoms like dizziness and confusion (CO2 narcosis).
• The priority is to reverse the cause by reducing the oxygen flow to a safer level (e.g., titrating to maintain SaO2 88-92%) and immediately notifying the physician for further orders.

Why Other Options Were Wrong

• Option B: Increasing the FiO2 would worsen the suppression of the hypoxic drive, leading to more severe CO2 retention and a faster decline in the patient's level of consciousness.
• Option C: While deep breathing is generally beneficial for lung expansion, it is not the priority in this acute emergency. Furthermore, a patient with an altered level of consciousness cannot follow commands to perform these exercises effectively.
• Option D: Placing a patient with COPD in a supine (flat) position can increase the work of breathing and worsen dyspnea because it allows abdominal contents to press against the diaphragm.

Related Visual

Clinical Relevance

• Nursing practice connection: Safe nursing care depends on performing Management of oxygen-induced hypercapnia in COPD in the correct sequence, documenting the action clearly, and monitoring for the expected response.
• The guiding principle for oxygen therapy in known CO2 retainers is 'start low, go slow.' The goal is to maintain SaO2 between 88-92%, not 100%.
• Always assess the level of consciousness and respiratory rate in a COPD patient when initiating or titrating oxygen. Drowsiness is a key early sign of CO2 narcosis.
• What if? If the patient's SaO2 was critically low (e.g., below 85%) despite the high-flow oxygen, the priority might shift to securing the airway (e.g., preparing for intubation) while still involving the physician, as this would indicate a more complex respiratory failure not solely due to hypoxic drive suppression.

How to Approach the Question

• First, identify the patient's condition: Chronic COPD.
• Next, note the intervention and the patient's response: The patient received high-flow oxygen (6 L/min) and developed neurological symptoms (dizziness, altered LOC).
• Connect the patient's condition with the response to the intervention. Recall the pathophysiology of COPD and oxygen therapy, specifically the concept of the 'hypoxic drive'.
• Recognize that the symptoms are classic signs of oxygen-induced hypercapnia (CO2 narcosis).
• Prioritize interventions based on the 'ABCs' (Airway, Breathing, Circulation). The problem is with 'Breathing' regulation. The most immediate action is to correct the cause of the problem.
• Evaluate the options: Reducing the oxygen addresses the root cause. Increasing it would be harmful. Deep breathing and repositioning are not the priority for an unstable patient with altered LOC.

Concept Tested & Keywords

• Concept Tested: Management of oxygen-induced hypercapnia in COPD
• Stem keywords: COPD, oxygen at 6 L/min, dizziness, altered level of consciousness
• Lead-in keywords: priority nursing intervention
• Clinical cues: Patient with a chronic condition (COPD) developing acute neurological symptoms (dizziness, altered LOC) after a specific intervention (high-flow oxygen).

Question ID

QCFtPJ6LcfcJ-6XI6vBh3k

Copy ID

Reference Book

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 p. 38-40