Final answer:
ABG's evaluate the adequacy of pH, pCO2, and HCO3 levels to identify acidosis, alkalosis, and determine respiratory or metabolic imbalances.
Step-by-step explanation:
ABG's, or arterial blood gases, evaluate the adequacy of three things: pH, carbon dioxide partial pressure (pCO2), and bicarbonate (HCO3) levels. These lab tests help identify acidosis and alkalosis and determine whether the imbalance is respiratory or metabolic. They also provide information on the extent of compensatory mechanisms at work. The blood pH value indicates whether the blood is in acidosis, within the normal range, or in alkalosis. The pCO2 and HCO3 values assist in determining whether the condition is metabolic or respiratory, and whether the body has been able to compensate for the problem.