Computerized correction of blood base excess to full hemoglobin-O₂ saturation

Area of Science:

• Biochemistry
• Medical Informatics
• Physiology

Background:

• Developed a mathematical procedure to calculate an accurate correction coefficient (-∆BE_B) for blood base excess.
• Incorporated actual 2,3-diphosphoglycerate (2,3-DPG) concentration into the correction for full hemoglobin-O₂ saturation.

Discussion:

• Utilized regression analysis on previously published laboratory data, correlating -∆BE_B with plasma pH, CO₂ tension, and 2,3-DPG.
• Achieved highly accurate fits (r² = 0.990 and 0.986) for both normal and 2,3-DPG-depleted blood.

Key Insights:

• The developed procedure accurately estimates the correction factor under normal conditions and in severe illness with extreme acid-base abnormalities.
• The method provides a reliable way to assess O₂-linked H⁺ exchange and the Haldane effect.

Outlook:

• The regression-derived procedure is easily integrable into computer systems for automated correction factor calculation.
• Facilitates precise acid-base balance assessment and investigation of physiological mechanisms in clinical settings.