Digital Chest Tube Drainage System (Thopaz+) Versus Analog in Pediatric Patients

Digital drainage systems use electronic sensors to measure changes in pressure and thus may allow for quantification of the degree of air leak continuously and provide a graphical representation of the trend over time. Data on intrapleural pressure are also provided by some units. Together, these data may lead to expedited chest tube removal and hospital discharge with obvious financial implications.

Analog drainage systems contain a sequentially numbered series of columns in the water seal chamber. The degree of air leak is assessed by observing the highest numbered column in which bubbling occurs. This provides a qualitative assessment at a specific point in time. This assessment, however, is subject to interobserver variability and does not account for variation over time.