The Nurse Is Assisting the Physician with Insertion of a Chest

The nurse is assisting the physician with insertion of a chest tube. The nurse notes fluctuation of the fluid level in the water seal chamber after the tube is inserted. Based on this observation, the nurse takes which of the following actions?

A) Ensure that suction is turned on.
B) Reinforce the occlusive dressing.
C) Encourage the client to breathe deeply.
D) Document the accurate functioning of the tube.