多年临床观察 ,有些肿瘤病人因术中失血过多、血源紧缺所迫而终止手术。开发血源固然重要 ,但大量输血可能引起一系列并发症 ,故最大限度减少术中失血 ,恰当掌握输血指征和时机 ,合理利用有限血源更重要。作者采用血液稀释并控制性降压的方法 ,在术中减少失血、节约输血效果显 Years of clinical observation, some cancer patients due to intraoperative blood loss, lack of blood caused by the forced termination of surgery. Development of blood is important, but a large number of blood transfusion may cause a series of complications, it is to minimize intraoperative blood loss, proper control of blood transfusion indications and timing, the rational use of limited blood is more important. The author adopts the method of hemodilution and controlled hypotension to reduce blood loss and save blood transfusion in operation