Which Information Obtained by the Nurse When Assessing a Patient

Which information obtained by the nurse when assessing a patient with acute respiratory distress syndrome (ARDS) who is being treated with mechanical ventilation and high levels of positive end-expiratory pressure (PEEP) indicates a complication of ventilator therapy is occurring?

A) The patient has subcutaneous emphysema.
B) The patient has a sinus bradycardia, rate 52.
C) The patient's PaO₂ is 50 mm Hg and the SaO₂ is 88%.
D) The patient has bronchial breath sounds in both the lung fields.