A Patient in Respiratory Distress Enters the Emergency Department

Multiple Choice

A patient in respiratory distress enters the emergency department.The patient denies a history of chronic obstructive pulmonary disease (COPD) .The nurse anticipates an order for oxygen delivered by which method to achieve the highest possible concentration of oxygen?

A) Simple face mask at 15 L/min
B) Nonrebreathing face mask at 15 L/min
C) Venturi mask at 15 L/min
D) Oxygen tent at 15 L/min