Abstract
Left-sided heart bypass may be run with a complete cardiopulmonary bypass circuit or a venoarterial extracorporeal membrane oxygenation circuit in thoracoabdominal surgery. Both configurations have specific disadvantages. We describe a modified circuit for left-sided heart bypass that can be run as an extracorporeal membrane oxygenation-like circuit, allowing lower activated clotting time targets and simplified perfusion while improving blood conservation and facilitating visceral perfusion.