Interchangeability of Arterial Coagulation and Venous Coagulation, in the Context of Cardiac Surgeries Under Cardiopulmonary Bypass, Using the DMDiv Hemochron Signature Elite

Paired arterial and venous blood sampling respectively on the radial arterial catheter and on the central venous catheter before the extracorporeal circulation, and on the sampling ramp during the extracorporeal circulation. Point of care biology exams are performed on two HSE devices simultaneously. Controls carried out, routinely, every 20 minutes according to the service protocol, before the CPB (starting ACT without heparin), during the CPB (ACT objective ≥400 seconds), after protamine reversal of heparin. On average, 10 samples are taken during heart surgery.