Concordance of the ions and GAP anion obtained by gasometry vs standard laboratory in critical care.

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  • Additional Information
    • Transliterated Title:
      Concordancia de los iones y anión GAP obtenidos mediante gasometría vs laboratorio estándar en cuidados críticos.
    • Source:
      Publisher: Elsevier España Country of Publication: Spain NLM ID: 101717568 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 2173-5727 (Electronic) Linking ISSN: 21735727 NLM ISO Abbreviation: Med Intensiva (Engl Ed) Subsets: MEDLINE
    • Publication Information:
      Original Publication: [Barcelona?] : Elsevier España, 2011-
    • Subject Terms:
      Acid-Base Equilibrium* ; Clinical Laboratory Techniques*/methods ; Clinical Laboratory Techniques*/standards ; Critical Care* ; Point-of-Care Systems*; Chlorides/*analysis ; Potassium/*analysis ; Sodium/*analysis; Adult ; Blood Gas Analysis/methods ; Chlorides/blood ; Cross-Sectional Studies ; Female ; Humans ; Intensive Care Units ; Male ; Potassium/blood ; Retrospective Studies ; Sodium/blood ; Time Factors
    • Abstract:
      Objective: To evaluate the differences observed in ion and GAP anion determinations obtained by point-of-care (POC) blood gas versus laboratory biochemical testing, and to analyze the possible errors according to the limits of normality.
      Material and Methods: A descriptive, cross-sectional retrospective study was made to assess concordance between two diagnostic tests in patients admitted to the Critical Care Unit of Ourense University Hospital Complex (Spain), between July and November 2015, involving at least one coinciding biochemical test and POC determination. Patients under 18years of age were excluded.
      Results: A total of 1,073 samples were analyzed. Lin's concordance correlation coefficients for sodium, potassium and chlorine were 0.87, 0.84 and 0.72, respectively. Kappa concordance of the normality limits for sodium, potassium and chlorine was 0.63, 0.74 and 0.32. The results indicated poor correlation of the anion GAP and null concordance between POC and biochemical testing, including the value corrected for albumin.
      Conclusions: Poor concordance was observed between the ion values as determined by biochemistry and blood gases; the two methods are therefore not interchangeable. Kappa agreement with normality limits was good for sodium and potassium, and weak for chlorine. Possible validity was noted in orienting the classification within the ion limits, with the exception of chlorine. No agreement was recorded in relation to the anion GAP, even that corrected for albumin.
      (Copyright © 2018 Elsevier España, S.L.U. y SEMICYUC. All rights reserved.)
    • Contributed Indexing:
      Keywords: Acid-base equilibrium; Chlorine; Cloro; Critical care; Cuidados críticos; Equilibrio ácido-base; Point-of-care systems; Potasio; Potassium; Sistemas de atención de punto; Sodio; Sodium
    • Accession Number:
      0 (Chlorides)
      9NEZ333N27 (Sodium)
      RWP5GA015D (Potassium)
    • Publication Date:
      Date Created: 20180909 Date Completed: 20200814 Latest Revision: 20210524
    • Publication Date:
      20221213
    • Accession Number:
      10.1016/j.medin.2018.06.009
    • Accession Number:
      30193741