摘要目的 评价氨甲环酸对老年全髋关节置换术患者的血液保护效果.方法 择期全髋关节置换术患者160例,性别不限,年龄65-70岁,体重指数16-22 kg/m2,ASA分级Ⅱ或Ⅲ级,采用随机数字表法,将其分为2组(n=80):对照组(C组)和氨甲环酸组(T组).切皮前T组经15 m in静脉输注氨甲环酸15 mg/kg,C组给予等容量生理盐水.术中监测Hb、PIt、PT和APTT指导输血.记录术中出血量、术后12 h和48 h出血量,术中、术后异体血输注情况.记录术后并发症的发生情况.结果 两组术中出血量比较差异无统计学意义(P＞0.05).与C组比较,T组术后出血量、异体红细胞使用率降低(p＜0.05),两组末见术后并发症的发生.结论 氨甲环酸对老年全髋关节置换术患者具有一定血液保护效应,但是临床价值有限.

abstractsObjective To evaluate the blood-saving effect of tranexamic acid in elderly patients undergoing total hip replacement.Methods One hundred and sixty ASA Ⅱ or Ⅲ patientss of both sexes,aged 65-70 yr,with a body mass index of 16-22kg/m2,undergoing total hip replacement,were randomly divided into 2 groups(n =80,each):control group(group C)and tranexamic acid group(group T).Anesthesia was induced with midazolam,fentanyl,etomidate and atracurium.The patients were tracheal intubated and mechanically ventilated.PEr CO2 was maintained at 35-45 mm Hg.Aneslhesia was maintained with propofol,remifentanil and atracurium.Before the skin incision,tranexamic acid 15 mg/kg was infused over 15 m in in group T,while the equal volume of normal saline was given instead in group C.Hemoglobin(Hb),platelet count(PLT),prothrombin time(PT),and activated partial thromboplastin time(APTT)were monitored during operation to guide blood transfusion.Intraoperative and postoperative blood loss and allogeneic blood transfusion were recorded.Postoperative complications were also recorded.Results There was no significant difference in the amount of intraoperative blood loss between the two groups(P ＞ 0.05).The amount of postoperative blood loss was significantly smaller and less allogeneic red blood cell was transfused in group T than in group C(P ＜ 0.05).No complications occurred after operation in either group.Conchusion Tranexamic acid has blood-saving effect in elderly patients undergoing total hip replacement,but the clinical value is limited.