Is continuous bubbling expected in the water seal chamber of a chest tube?

Continuous bubbling in the water seal chamber of a chest tube is not expected under normal circumstances. The presence of tidaling is anticipated, as it indicates that there is proper functioning of the pleural space and the mechanics of respiration. Tidaling shows that fluid levels in the chamber rise and fall with inhalation and exhalation, reflecting changes in intrathoracic pressure.

Continuous bubbling, on the other hand, suggests that there may be air leaking from the pleural space or from the system itself. This is not an indication of adequate drainage; rather, it reveals an underlying issue that requires assessment. Therefore, the correct response highlights that while tidaling is normal, continuous bubbling is a sign that warrants further investigation to ensure proper function and to rule out potential complications such as a pneumothorax.