The content of endotoxin(ETX),endothelin(ET), Creatinine(Cr), Urea in blood in differenttime were detected and the correlations of them were compared.

• 在不同时间内抽血检查血液中内毒素（Endotoxin ETX）、内皮素（Endothelin ET）、肌酐（Creatinine Cr），尿素（Urea）含量，比较各组ETX、ET、Cr、Urea含量差别，分析这些因素的相关关系。