A nurse is caring for a patient experiencing an acute exacerbation of chronic obstructive pulmonary disease (COPD). Which arterial blood gas (ABG) finding would be most indicative of this condition?

✓ Correct Answer: Option B

An acute exacerbation of COPD typically presents as respiratory acidosis (low pH, high PaCO2) with some metabolic compensation (high HCO3) if the condition is chronic. Option B shows partially compensated respiratory acidosis.