Which is a common cause of poor venous drainage during cardiopulmonary bypass and how is it corrected?

• A. Air entrapment in the venous line; reverse with line flushing
• B. Low venous pressure; increase suction
• C. Malposition or kinking of the venous cannula; reposition cannula and check lines
• D. Inadequate systemic anticoagulation; give heparin

Answer: (C)