Medicine A second-year PG resident tells you to perform an ABG of a patient. All of the following are true about performing an ABG except: A Before performing the ABG, syringe should be loaded with 0.3 cc of heparin B Normal pH, HCO. and PCO, levels may not indicate absence of an acid-base imbalance C A different site should be tried i f modified Allen's test is negative D Radial aery is the preferred site 💡 Explanation A second-year PG resident tells you to perform an ABG of a patient. All of the following are true about performing an ABG except: ✓ Correct Answer: A. Before performing the ABG, syringe should be loaded with 0.3 cc of heparin