How many liters of oxygen can a patient be placed on without a doctors order: Rationale: Harding, M., Kwong, J., Roberts, D., Hagler, D., \& Reinisch, C. (2020). Lewis's Medical-surgical nursing : Assessment and management of clinical problems (11th ed.). Elsevier, Inc. O 4 liters
O 3 liters
O 5 liters
O 2 liters .