A nurse is caring for a client following the placement of a chest tube drainage system for a pneumothorax. Which of the following findings should the nurse expect?

A. Serous drainage is not expected with a pneumothorax, which usually involves air in the pleural space, not fluid. If fluid is present, it would typically be minimal and possibly bloody if trauma is involved. B. Tidaling (the rise and fall of water in the water seal chamber with the client's respirations) is an expected finding and indicates that the chest tube system is patent and responding to changes in intrathoracic pressure. C. Tracheal deviation toward the unaffected side is a sign of a tension pneumothorax, which is a medical emergency, not an expected finding after chest tube placement. D. Diminished breath sounds in the lung base may occur with a pleural effusion but are not the typical expected outcome following a chest tube for pneumothorax. Breath sounds should gradually improve as the lung re-expands.