The following data have been collected from a 70 kg (154 lb)…

The following data have been collected from a 70 kg (154 lb) patient receiving mechanical ventilation with a volume ventilator: Mode A/C | Rate 12/min | VT 560 mL | FiO2 0.80 | PEEP 10cmH2O pH 7.37 | PaCO2 42 torr | PaO2 161 torr | HCO3 25 mEq/L | BE 0 On the basis of these data, which of the following ventilator setting changes should the RT recommend?