What is an appropriate monitoring approach after initiating oxygen therapy?

• A. Continuous Pulse Oximetry, Periodic ABGs If Indicated, And Clinical Reassessment
• B. No Monitoring
• C. Only Daily Blood Tests
• D. EEG Monitoring

Answer: (A)

When oxygen therapy is started, you want a monitoring plan that tracks how well the oxygen is doing in real time while also confirming with more detailed tests when needed. The strongest approach combines continuous pulse oximetry to watch SpO2 continuously, periodic arterial blood gases if indicated to assess gas exchange and acid-base status, and regular clinical reassessment to interpret all data in the patient’s overall condition.

Continuous pulse oximetry lets you titrate the oxygen dose to keep saturations within a target range, catching drops in oxygenation or unintended high oxygen levels quickly. Arterial blood gases provide precise measurements of PaO2, PaCO2, pH, and bicarbonate, which are especially important when ventilation may be compromised or when the patient’s condition is changing, such as in COPD, acute respiratory failure, or after initiating high FiO2. Scheduling ABGs periodically or as indicated ensures you don’t miss evolving ventilatory problems that oximetry alone might not reveal.

Clinical reassessment ties everything together: observing work of breathing, mental status, heart rate and blood pressure, and how the patient feels. This helps confirm whether the oxygen strategy is appropriate and whether further adjustments are needed.

Other approaches fall short: monitoring with no checks at all is unsafe, relying only on daily blood tests misses rapid changes, and EEG monitoring isn’t relevant to guiding oxygen therapy.