Interpret the following ABG: pH, 7.36; PCO2, 60 mmHg; PO2, 70 mmHg; and CO2 content, 36 mEq per L.
Answer:
The fraction of inspired oxygen (FIO2) is essential to evaluate PaO2. Assume the blood sample is obtained while the patient is breathing room air. The blood gases show mild hypoxemia and respiratory acidosis, compensated by metabolic alkalosis. The blood gases are compatible with COPD.
Reference(s):
- Jameson JL, Fauci AS, Kasper DL, et al, eds. Harrison’s Principles of Internal Medicine. 20th ed. New York: McGraw-Hill; 2018:1990-1998.