目的探讨复苏后6 h静动脉二氧化碳含量差(Cv-aCO2)/动静脉氧含量差(Da-vO2)联合乳酸清除率对感染性休克患者预后的评估价值。方法选取感染性休克108例(≥18岁,原发病均为肺部感染),根据复苏后6 h Cv-aCO2/Da-vO2和乳酸清除率将其分为A、...目的探讨复苏后6 h静动脉二氧化碳含量差(Cv-aCO2)/动静脉氧含量差(Da-vO2)联合乳酸清除率对感染性休克患者预后的评估价值。方法选取感染性休克108例(≥18岁,原发病均为肺部感染),根据复苏后6 h Cv-aCO2/Da-vO2和乳酸清除率将其分为A、B、C和D组4组:A组21例,Cv-aCO2/Da-vO 2>1,乳酸清除率>0.10;B组38例,Cv-aCO2/Da-vO2>1,乳酸清除率≤0.10;C组26例,Cv-aCO2/Da-vO2≤1,乳酸清除率≤0.10;D组23例,Cv-aCO2/Da-vO2≤1,乳酸清除率>0.10。对复苏后6 h Cv-aCO2/Da-vO2、乳酸清除率和入组后第3天序贯器官衰竭评估(sequential organ failure assessment,SOFA)评分进行析因方差分析,并比较4组入组后第3天SOFA评分及入组后28 d全因病死率。结果析因方差分析结果显示,感染性休克108例复苏后6 h Cv-aCO2/Da-vO2与入组后第3天SOFA评分相关(P<0.01);复苏后6 h乳酸清除率与入组后第3天SOFA评分也相关(P<0.05)。One-way ANOVA统计分析结果显示,4组入组后第3天SOFA评分总体比较差异具有统计学意义(P<0.01)。4组入组后第3天SOFA评分两两比较结果显示,A组与B组和C组与D组比较差异无统计学意义(P>0.05);A组与C组、A组与D组、B组与C组和B组与D组比较差异有统计学意义(P<0.05或P<0.01)。A组入组后28 d全因病死率71.43%;B组入组后28 d全因病死率73.68%,C组入组后28 d全因病死率30.77%,D组入组后28 d全因病死率26.09%,4组入组后28 d全因病死率总体比较差异具有统计学意义(P<0.01);入组后28 d全因病死率A组与B组和C组与D组比较差异无统计学意义(P>0.05),A组与C组、A组与D组、B组与C组和B组与D组比较差异有统计学意义(P<0.01)。结论复苏后6 h Cv-aCO2/Da-vO2和乳酸清除率均可以预测感染性休克患者预后,但二者联合未显示出更优预测价值。展开更多
The VO2 powders were prepared by hydrothermal synthesis.The effects of heat treatment conditions and Y-doping on the structure and phase transition temperature of VO2 were studied.The XRD,SEM and TEM results show that...The VO2 powders were prepared by hydrothermal synthesis.The effects of heat treatment conditions and Y-doping on the structure and phase transition temperature of VO2 were studied.The XRD,SEM and TEM results show that the heat treatment temperature has a significant effect on the crystal transformation of VO2 precursor.Increasing temperature is conducive to the transformation of precursor VO2(B)to ultrafine VO2(M).The Y-doping affects the structure of VO2.Y^3+can occupy the lattice position of V4+to form YVO4 solid solution,which can increase the cell parameters of VO2.Due to the lattice deformation caused by Y-doping,the aggregation of particles is prevented,and the grain is refined obviously.DSC curves show that Y-doping can reduce the phase transition temperature of VO2(M).After adding 9 at.%Y,the phase transition temperature can be reduced from 68.3 to 61.3℃.展开更多
文摘目的探讨复苏后6 h静动脉二氧化碳含量差(Cv-aCO2)/动静脉氧含量差(Da-vO2)联合乳酸清除率对感染性休克患者预后的评估价值。方法选取感染性休克108例(≥18岁,原发病均为肺部感染),根据复苏后6 h Cv-aCO2/Da-vO2和乳酸清除率将其分为A、B、C和D组4组:A组21例,Cv-aCO2/Da-vO 2>1,乳酸清除率>0.10;B组38例,Cv-aCO2/Da-vO2>1,乳酸清除率≤0.10;C组26例,Cv-aCO2/Da-vO2≤1,乳酸清除率≤0.10;D组23例,Cv-aCO2/Da-vO2≤1,乳酸清除率>0.10。对复苏后6 h Cv-aCO2/Da-vO2、乳酸清除率和入组后第3天序贯器官衰竭评估(sequential organ failure assessment,SOFA)评分进行析因方差分析,并比较4组入组后第3天SOFA评分及入组后28 d全因病死率。结果析因方差分析结果显示,感染性休克108例复苏后6 h Cv-aCO2/Da-vO2与入组后第3天SOFA评分相关(P<0.01);复苏后6 h乳酸清除率与入组后第3天SOFA评分也相关(P<0.05)。One-way ANOVA统计分析结果显示,4组入组后第3天SOFA评分总体比较差异具有统计学意义(P<0.01)。4组入组后第3天SOFA评分两两比较结果显示,A组与B组和C组与D组比较差异无统计学意义(P>0.05);A组与C组、A组与D组、B组与C组和B组与D组比较差异有统计学意义(P<0.05或P<0.01)。A组入组后28 d全因病死率71.43%;B组入组后28 d全因病死率73.68%,C组入组后28 d全因病死率30.77%,D组入组后28 d全因病死率26.09%,4组入组后28 d全因病死率总体比较差异具有统计学意义(P<0.01);入组后28 d全因病死率A组与B组和C组与D组比较差异无统计学意义(P>0.05),A组与C组、A组与D组、B组与C组和B组与D组比较差异有统计学意义(P<0.01)。结论复苏后6 h Cv-aCO2/Da-vO2和乳酸清除率均可以预测感染性休克患者预后,但二者联合未显示出更优预测价值。
基金Projects(51404183,51504177)supported by the National Natural Science Foundation of China。
文摘The VO2 powders were prepared by hydrothermal synthesis.The effects of heat treatment conditions and Y-doping on the structure and phase transition temperature of VO2 were studied.The XRD,SEM and TEM results show that the heat treatment temperature has a significant effect on the crystal transformation of VO2 precursor.Increasing temperature is conducive to the transformation of precursor VO2(B)to ultrafine VO2(M).The Y-doping affects the structure of VO2.Y^3+can occupy the lattice position of V4+to form YVO4 solid solution,which can increase the cell parameters of VO2.Due to the lattice deformation caused by Y-doping,the aggregation of particles is prevented,and the grain is refined obviously.DSC curves show that Y-doping can reduce the phase transition temperature of VO2(M).After adding 9 at.%Y,the phase transition temperature can be reduced from 68.3 to 61.3℃.
