Map of the U.S. demonstrating the growing number of Top Institutions currently using the PleuraFlow® ACT® System to enhance their patient's recovery following cardiac surgery. Improve Outcomes, Lower Costs! ClearFlow Active Clearance Technology is saving lives and reducing suffering every day at the most prestigious cardiac surgery hospitals in the world! Patients receiving the PleuraFlow® ACT® System incur lower rates of POAF, pleural effusions and pericardial effusions and infection. These patients also heal faster, receive less blood products and leave the ICU a day earlier than using conventional technology. So hospital costs are lower. It's simple. Everyone benefits.