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Retained Blood Syndrome


Retained Blood Syndrome (RBS) – the composite of drainage-related post-cardiothoracic surgery complications – is detrimental to patient outcomes and may include hemothorax, pericardial tamponade and bloody pleural or pericardial effusions. RBS can affect anyone at any stage of recovery.

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Cascade of Retained Blood Complications

Boyle, E.M., Gillinov, A.M., Cohn, W.E., Ley, S.J., Fischlein, T., Perrault, L.P. Retained Blood Syndrome After Cardiac Surgery: A new look at an old problem. Innovations in Cardiovascular and Thoracic Surgery. 2015 Sept/Oct:10(5):296-303


Complications From Retained Blood After Cardiothoracic Surgery

Data from MarketScan® PIDB and Commercial Medicare Databases July 1, 2012 – June 30, 2013.
*Studies include both retrospective observational assessments and prospective trials, supported by ClearFlow. Results could be impacted by variations in study methodologies, institutional protocols used in treating patients, and other factors. ClearFlow products are not therapeutic devices. Please see full publications at for additional information.