acid-base disorders include acidosis and alkalosis and are classified as metabolic or respiratory. match the type of acidosis and alkalosis to its primary abnormality: decrease pH, increase PCO2, PCO2 > 45 mmHg, decreased pH and HCO3-, HCO3- < 22 mEq/L, increased pH and HCO3-, HCO3- > 26 mEq/L, and increased pH, decreased PCO2, PCO2 , 35 mmHG