Match the causes of acid-base disorders to the acid-base problems that they cause.

• hypoventilation
• vomiting
• emphysema
• hyperventilation
• fever
• pneumothorax
• An acute respiratory acidosis characterized by PCO2 > 50mm Hg and a normal HCO3-
• A metabolic alkalosis characterized by PCO2 > 45 mm Hg and an elevated HCO3-
• An acute respiratory alkalosis characterized by PCO2 < 35mm Hg and a normal or slightly decreased HCO3-
• Primary cause of respiratory acidosis characterized by a pH < 7.35 and a PCO2 > 50mm Hg
• A chronic (compensated) respiratory acidosis characterized by PCO2 > 50mm Hg and an increased HCO3-
• Primary cause of respiratory alkalosis characterized by a pH > 7.45 and PCO2 < 35mm Hg