ABSTRACT
Objective This study evaluates the effectiveness for using acute plateletpheresis (APP) as a blood conservation method to reduce the need of blood transfusion and increase coagulation function in aortic arch surgery with deep hypothermic circulatory arrest (DHCA ). Methods Thirty-six type-A aortic dissections patients (male 31,female 5,age 23-65 years,ASA physical status II-IV)undergoing frozen elephant trunk with total arch replacement (Bentall plus Sun's surgery)were enrolled in the prospective randomized trial.The patients were randomized into two groups:regular blood conservation group (group control,n = 18)and group APP (n = 18).Blood sample was collected respectively after anesthesia induction (T1 ),before heparinization (T2 ),by the end of surgery (T3 )and 24 hours after surgery (T4 ).Data was collected and reviewed in terms of perioperative transfusion needs,normal laboratory examination,clinical outcomes including blood routine analysis (Hb,Plt,MPV,P-LCR)and thrombelastography (TEG-R,TEG-K,TEG-α,TEG-A,TEG-MA,TEG-EPL).Kaolin and heparinase detections were performed for TEG.Results Com-pared with T1 ,TEG-R,TEG-K,TEG-A,TEG-MA,TEG-EPL and Plt were significantly decreased while TEG-CI,MPV,P-LCR significantly increased in T4 in group APP (P <0.05 ).TEG-A,TEG-MA and Plt were significantly greater(P <0.05)in group APP than in group control at T2 ,and TEG-K,TEG-ELP and HBG were significantly less (P <0.05)in group APP than in group control at T3 . Conclusion The utilization of APP technique was associated with the improved coagulation function in aortic arch surgery with DHCA.