The Nurse Is Examining a Chest Drainage System on a Patient

The nurse is examining a chest drainage system on a patient with a pneumothorax and notes the water level in the water seal chamber fluctuating with each of the patient's respirations. How should the nurse respond?

A) Examine the entire system and tubing for leaks.
B) Clamp the tubing and call for help.
C) Have the patient take a deep breath.
D) No action is necessary; this is an expected finding.