Evaluation of TEG 6S PM® During Cardiopulmonary Bypass to Detect Postoperative Biological Coagulopathy

"Preoperative period:~* Pre-operative blood sampling, according to the usual practices of the unit before surgery~* Collection of the patient's usual demographic characteristics~per operative period :~* After anesthetic induction:a TEG6S platelet mapping® sampled from the arterial catheter routinely placed after anesthetic induction~* During the CPB, 30 min before aortic declamping: performing TEG 6S platelet mapping® (heparinized tube)~* 5 min after heparin antagonization by protamine, after the weaning of the bypass, and before any transfusion: performing a TEG 6S citrate® (citrated tube)~Post-operative period (resuscitation):~• postoperative bleeding at 2 hours and during the first 12 hours."