So i currently have a placement in critical care unit and am needing to develop a nursing care plan for my ventilated post cardiac surgery patient and am having so much trouble ): My diagnosis is impaired gas exchange which is evidenced by decreased pa02. My current interventions are - respiratory assessment hourly including oscultation - ETT placement by chest xray - Maintain vent settings as per drs orders - Suction as required - Elevate head of bead So i feel like this isnt actually assisting my patient in any way in relation to increasing his Pa02 levels. What other recommendations for interventions are there? :/