a nurse is caring for a patient with acute respiratory distress syndrome (ards) who is receiving mechanical ventilation using synchronized intermittent mandatory ventilation (simv). the settings include fraction of inspired oxygen (fio2) of 80%, tidal volume of 450, rate of 16/minute, and positive end-expiratory pressure (peep) of 5 cm. which assessment finding is most important for the nurse to report to the health care provider?
