<prompt> Answer this question truthfullyWhat ventilator setting change is best to improve oxygenation in a patient with the following settings: FiO2: 70, PEEP: 5 mmHg, VT: 400 mL, RR: 24min?  <response>: <reason> To improve oxygenation in this patient, the best ventilator setting change would be to increase the positive end-expiratory pressure PEEP. 