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ABG Exercise – Campus Lab. ABG Components. Four-Step ABG Analysis. Examine the PaO 2 and SaO 2 Determine if pH is normal Study the PaCO 2 and HCO 3 - values Determine which compensatory mechanism is working. Metabolic Alkalosis. Respiratory Acidosis. Metabolic acidosis.
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Four-Step ABG Analysis • Examine the PaO2 and SaO2 • Determine if pH is normal • Study the PaCO2 and HCO3- values • Determine which compensatory mechanism is working