What is an abg Arterial blood gas Drawn from artery- radial, brachial, femoral It is an invasive procedure Caution must be taken with patient on anticoagulants Helps differentiate oxygen deficiencies from primary ventilatory deficiencies from primary metabolic acid-base abnormalitiesWhat is an ABG Arterial Blood Gas Drawn from artery- radial, brachial, femoral It is an invasive procedure. Caution must be taken with patient on anticoagulants. Helps differentiate oxygen deficiencies from primary ventilatory deficiencies from primary metabolic acid-base abnormalities