A Patient Is Admitted Unit with Acute Respiratory Distress Syndrome

A patient is admitted unit with acute respiratory distress syndrome (ARDS) .The patient has been intubated and is mechanically ventilated.The patient is becoming increasingly agitated,and the high-pressure alarm on the ventilator has been frequently triggered.What action should be the nurse take first?

A) Administer midazolam 5 mg by intravenous push immediately.
B) Assess the patient to see if a physiologic reason exists for his agitation.
C) Obtain an arterial blood gas level to ensure the patient is not hypoxemic.
D) Apply soft wrist restraints to keep him from pulling out the endotracheal tube.