Study on the Protective Effect of Platelet Autotransfusion in Cardiopulmonary Bypass

Objective: To study the blood protective effect of platelet autotransfusion in cardiopulmonary bypass. Methods: In this study, 80 patients with cardiopulmonary bypass heart surgery in our hospital from January 2018 to July 2019 were divided into two groups. The control group was not given platelet separation, the study group was given platelet separation after anesthesia induction, platelet rich plasma was extracted before heparinization for cardiopulmonary bypass and heparin was recycled. The blood clotting function, postoperative recovery, blood transfusion volume and postoperative drainage volume were analyzed before operation, 1H, 24h and 48h after operation. Result: Compared with the control group, the volume of blood flow, blood plasma and platelet transfusion in the study group decreased significantly in the first hour after operation, the difference was statistically significant (P < 0.05). The recovery of the study group was slightly better than that of the control group, and the difference was not statistically significant (P > 0.05). Conclusion: Autotransfusion of platelets can alleviate the coagulation function of patients undergoing cardiopulmonary bypass, reduce the amount of postoperative bleeding and allogeneic blood transfusion, and protect the blood.