血气分析参数【推荐】.doc

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1、AVLCompact3中有以下计算值。CalculatedvaluestermNCCLStermCompactNCCLSconform・RemarkBicarbonateHCO3HC03yesaccordingtoNCCLSformula(8)TotalCO2inplasmactCOjTCO2yesaccordingtoNCCLSformula(7)Baseexcess(blood)BEBEyesaccordingtoNCCLSformula(15)Baseexcess(blood)withSO2correctionBEgnoinNC

2、CLSnotspecialdefined,butisinaccordancetoNCCLSofsaturatedSO?»100%Baseexcess,extracellularBE口BEecfyesaccordingtoNCCLSformula(14)Bufferbase-BB—inNCCLSnotdefinedStandardpHvalue—si.pHioNCCLSnotdefinedStandardBicarbonatehco3mSI.HCO3nodefinedinNCCLSsection5.10,howevernoformul

3、a.Oxygensaturationso2O2satpartlyNCCLSconforming,onlywithdatalinktooximeterOxygencontentctO2O2contyesinNCCLSnotspecialdefined,butisinaccordancetothecorrespondingcalculationstepsforShuntAlveolararterialoxygenpartialpressuredifferencePAO2-PaO2AaD6yesaccordingtoNCCLSformula

4、(16)and(17)Hydrogenionconcentration—cH+—inNCCLSnotdefinedStandardizedionizedCalcium一nCapR.74—inNCCLSnotdefinedPO2atpatienttemperaturePO2lPO2TyessignificantothervaluesthanbeforePCO2atpatienttemperaturePCOfPCO2TyesaccordingtoNCCLSformula(24)pHalpatienttemperaturepH*pHtyes

5、accordingtoNCCLSformula(23)relativeShuntvolumeQsQtShuntpartlyaccordingtoNCCLSformula(19)ifPaO2>150mmHg血浆中碳酸氢根浓度方程式碳酸氢根浓度CHCOf=PCO210pH-7.608血中CO2总血浆中CO2浓度是溶解的CO2与碳酸氢CtC02二CHCO3+0.0307PCO2血液中碱液BEactBEact=(1-0.014[mmol/cHb)[cHCO3-24.26+(1.63cHb+1]9・5)(pH-7.4)卜0・2cHb(l-S02

6、)剩余碱BE=(1-0.014[mmol/cHb)[cHCO3-24.8+(1.43cHb+7.7；l](pH-7.4)]细胞外液碱BEecf[mmol/1]BEecf=cHCO3-24.8+16.2(pH-7.4)缓冲碱BB=BE+41.7+0.42cHb[mmol/1]标准pH■值pHst=pH+(0.8262-0.01296[pH-uncHb+0.006942BE)*lg(0.025it]PCO2)标准碳酸氢根CHCO3St=10卩％一6・022)[mmol/11氧饱和度（有效的）SO2=cO2Hb/(cO2Hb+cHHb)No

7、COOX-datapresent:°2sal=withlgQ=2.9lgPO2k+Fl-F3lgP02k=lgPO2+0.48(pH-F4)-lg(P5()/F5)+0.0013BEadult:Fl=1.661F2=0.074F3=4.172F4=7.4F5=26.7fetal:Fl=1.3632F2=0.0533F3=4.113F4=7.2F5=25.0[ml/dL][ml/dL][mmHg]氧含量(动脉)COOX-datapresent:O2cont=O2ct(Oxi)+0.00314PONoCOOX-datapresent:O2

8、cont=1.39cHbO2sat+0.003PO2SO2=f(PO2,pH,P50,a/f,BE)肺胞氧分压AaDO2t=PAO2t-PaO2tPAO2t=(Baro-pH2Ot)FIO2-PACO2t[FIO2+(1