Problem: A nurse is caring for a client with chronic obstructive pulmonary disease (COPD) who is currently receiving mechanical ventilation. After reviewing the client's arterial blood gas (ABG), the nurse identifies this ABG as See the exhibit. View Exhibit Need Online Tutoring? O A. Metabolic alkalosis View Exhibit B. Metabolic acidosis O C. Respiratory alkalosis D. Respiratory acidosis Laboratory Result Reference 7.24 7.35 - 7.45 PaCO2 48 mm Hg 35-45 mm Hg Next Question HCO3- 23 mEq/L 22-28 mEq/L PaO2 90 mm Hg 80-100 mm Hg Click on the image to enlarge.