You are taking care of a 3yr old patient who went to the OR…

You are taking care of a 3yr old patient who went to the OR for VSD closure today. At the end of the case the patient was still very sedated so he was brought to the ICU mechanically ventilated. He has started to wake up some and the nurse calls you with the blood gas listed below. He is on Volume ventilation with set tidal volume of 8/kg, ventilatory rate is set at 24 and he is on room air. What is the best ventilatory change to make at this time based on the blood gas?   pH: 7.52 C02: 32 P02: 98 Base Excess: 6