Which of the following would the nurse expect to note in the client?
A nurse is caring for a male client with acute respiratory distress syndrome.

Low arterial PaO2

The earliest clinical sign of acute respiratory distress syndrome is an increased respiratory rate. Breathing becomes labored. and the client may exhibit air hunger. retractions. and cyanosis. Arterial blood gas analysis reveals increasing hypoxemia. with a PaO2 lower than 60 mm Hg.