结论：小儿心内直视手术中采用海脉素血液稀释式自身输血是安全可行的。
Conclusion: Hemodilutional autotransfusion with haemacel can be used safely in children undergoing open heart surgery.
选病情及手术方法与实验组一致的头颈癌病人46例作为对照组，不采用稀释式自身输血，有输血指征时输入异体血。
The other 46 patients with the same disease and operation were served as the control group, without autotransfusion and a donors blood was transfused only in case of need.
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