A 40 year old patient is receiving ventilation at the follow…
A 40 year old patient is receiving ventilation at the following settings: minute volume 10 L/min, SIMV 12, FiO2 100% and PEEP 20 cmH20. Additional diagnostic data disclose the following: VD/VT ratio 0.5 RQ 0.9 pH 7.39 PaCO2 40 torr PaO2 190 torr HCO3 26 mEq/L What is this patient’s alveolar to arterial gradient?