There are about 35759 clinical studies being (or have been) conducted in China. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
Perioperative blood loss continues to be a serious problem in complex aortic arch surgery using deep hypothermic circulatory arrest (DHCA). Major blood loss causes increased morbidity and mortality [1]. These patients often require transfusion of allogeneic blood products. It has been estimated shortages of blood supply in China will worsen [2]. Clinicians have made significant progress to decrease the quality of allogenic blood transfusion. Increasing postoperative hemorrhage risk of aortic arch patients undergoing DHCA may be related to CPB induced hemostatic defect, the use of the CPB is likely to contribute to coagulation factor lost and platelet dysfunction [3, 4]. We are aware of the potential benefit of aPRP, withdrawal of aPRP immediately before initiating CPB appears to be a promising approach because it avoids CPB-related platelet damage and limits post-CPB blood loss. So we adopted and used aPRP as a blood conservation technique to reduce blood transfusion in aortic arch surgery with DHCA. Autologous red blood cells were infused to maintain a HGB level above 100 g/L after heparin neutralizing activity. And aPRPs were transfused after heparin neutralizing activity as no active bleeding was observed. Our goal was to determine the effect between aPRP and homologous transfusion on perioperative bleeding during complex aortic arch surgery using DHCA.