Arterial blood-gas interpretations in the respiratory intensive-care unit.

The role of the nurse in the respiratory intensive-care unit requires increased sophistication as our knowledge of the patient becomes more complex. This expanded role should include a thorough understanding of disturbances in acid-base balance, the relationship of PaCO2 to ventilation, the difference in acute and chronic respiratory problems, and the causes and treatment of hypoxemia. The ability to analyze and evaluate blood-gas determinations is simply one more important tool the nurse may utilize in the care and treatment of the critically ill patient.