The digital pleural drainage system Topaz+ by Medela is compared to the analogue system
Atrium OCEAN by Maquet in patients undergoing cardiac surgery.
The study is prospectively randomized with an all-comer setup. The patients are randomly
selected for one of the systems. The surgery is performed in the standard fashion and chest
tubes are placed routinely by the surgeon depending on the type of surgery. A retrosternal 32
French drain is placed in every patient and pericardial and/or pleural drains are optional.
The postoperative course does not vary from the clinical standard and the chest tubes are
removed according to institutional standard. The clinical data about fluid amount, time of
removal, air leaks, tamponade are routinely collected in a digital patient documentation