The Nurse Is Assessing Placement of a Nasogastric Tube That $4 \mathrm{~cm}$

The nurse is assessing placement of a nasogastric tube that the patient has had in place for 2 days. The tube is draining green aspirate. What is the nurses most appropriate action?

A) Inform the physician that the tube may be in the patients pleural space.
B) Withdraw the tube 2 to $4 \mathrm{~cm}$ .
C) Leave the tube in its present position.
D) Advance the tube up to $8 \mathrm{~cm}$ .