Contrast analysis of three anticoagulant methods for arterial blood gas tests

Objective To compare the testing results of blood gas analysis collected from the same patients with the same blood sampling sites , by no anticoagulant , heparin sodium （100 IU/ml normal saline）and solid lithium heparin .Methods Randomly collected samples from 150 ICU patients by three different hemostix to implement arterial blood gas tests , detected the blood pH , PaCO2 , PaO2 , HCT, Hb, BE, HCO3-,Na＋,K＋, Ca2＋,Lac.Results The test results of arterial blood specimens （ pH, PaCO2 , PaO2 , HCT, Hb, BE, HCO3-, Na＋,K＋,Ca2＋,Lac） of 100 general anesthesia surgery patients in three groups were compared .There were no statistically significant differences between the test results （ F=0.150,0.298,0.052,0.193,0.163,0.364, 0.375,0.874,0.205,2.313,0.059, respectively; P>0.05）.The test results of arterial blood specimens of 50 critical patients showed no significant differences （ F=0.007,0.014,0.023,0.006,0.003,0.008,0.009, 0.150,0.023,0.012,0.002, respectively;P>0.05）.The lowest and the highest value of ICC were 0.946 and 0.999, with 95%CI （confidence interval） 0.896-0.999 （P〉0.05）.Conclusions The test results by three different anticoagulant methods show no statistically significant difference .Three methods are suitable for arterial blood samples to apply blood gas analysis . Key words: Arterial blood gas test; Anticoagulant method; Heparin sodium; Solid lithium; No anticoagulant