A nurse is assisting with the care of a client who has a newly inserted water-seal closed chest tube. Which of the following findings should the nurse report to the provider?

After insertion of a water-seal closed chest tube, the nurse monitors the drainage system carefully. Chest drainage exceeding 70 mL per hour is a reportable finding because it suggests active hemorrhage or significant fluid accumulation that may require medical intervention such as surgical exploration or adjustment of anticoagulation. The acceptable threshold for reporting is generally drainage greater than 100 mL per hour in most references, but any rate above approximately 70–100 mL per hour warrants provider notification. Water fluctuating in the water-seal chamber is expected and normal, reflecting changes in intrathoracic pressure with breathing; this is called tidaling and confirms the system is functioning correctly. Clear chest drainage can be normal, particularly when the tube is placed for a transudative effusion or after the initial bloody drainage clears; it does not require reporting unless accompanied by other concerning signs. Securing connections of the tubing with tape is a recommended nursing practice to prevent accidental disconnection and is a correct, expected finding rather than something to report. Therefore, the only finding listed that warrants notifying the provider is drainage greater than 70 mL per hour, indicating potentially dangerous fluid or blood loss.