Comparison of Hgb, Htc, Na+, and K+ Levels Measured by Blood Gases Analyzer and Laboratory Auto-Analyzer in Different pH Stages

Abstract

Aim: The primary aim of the present study was to detect whether blood gases analyzer (BGA) is reliable or not in daily practice by comparing sodium (Na+), potassium (K+), hemoglobin (Hgb), and hematocrit (Htc) levels measured by BGA and laboratory auto-analyzer (LAA). The secondary aim was whether BGA is reliable or not in daily practice by comparing Na+, K+, Hgb, and Htc levels measured by BGA and LAA in different pH stages.Materials and methods: The study screened the electronic data and file records of all patients who were admitted to the emergency department with any complaint during the study period retrospectively. Patients who had results of venous blood gases and routine laboratory obtained at the same time were included the study. For each parameter, agreements and correlations between the results of BGA and LAA were evaluated by Bland-Altman test and Spearman’s correlation test, respectively. An r-value >0.80 was considered a strong correlation.Results: The laboratory results of 1374 patients were evaluated for statistical analyses. When evaluating the correlations between the results of BGA and LAA, it was found that there was only a strong correlation for K+ (p