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KMID : 0387720090200030242
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Korean Journal of Blood Transfusion
2009 Volume.20 No. 3 p.242 ~ p.246
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Differences in Hemoglobin Levels as Measured by Blood Gas and Auto Blood Cell Count Analyzers
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Yoon Seo-Young
Cha Ye-Ji
Kwon Oh-Hun
Lee Woon-Hyoung
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Abstract
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Background:While point-of-care testing is being used increasingly as a basis for making decisions about erythrocyte transfusion, no valid standards or guidelines have been developed concerning the accuracy of measuring hemoglobin concentration.
Methods :To compare results from blood gas and auto blood cell count analyzers with respect to hemoglobin, 40 patient blood residual samples which had been withdrawn into 4 mL sodium heparin and EDTA tubes, were analyzed twice by each devices.
Results : Passing-Bablok comparisons for hemoglobin (g/dL) with the Nova CCX (y) and Advia 2120 (x) were y=0.877x＋2.471 (r=0.985). Additionally, hemoglobin levels from the blood gas analyzer were out of the calculated range at the clinical decision point.
Conclusion :Blood gas analyzers as point-of care testing exhibited a slightly higher hemoglobin level than auto blood cell count analyzers. Some also produced values of hemoglobin out of the expected range at the clinical decision point. Therefore, the use of blood gas analyzers for hemoglobin levels is limited and it is recommended that the assessment of hemoglobin for transfusion should be determined using auto blood cell count analyzers.
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KEYWORD
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Transfusion, Hemoglobin, Auto blood cell count analyzer, Blood gas analysis
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