Anion Gap Article 01. Serum Anion Gap: Its Uses and Limitations in Clinical Medicine. 02. The Serum Anion Gap in the Evaluation of Acid-Base Disorders: What Are Its Limitations and Can Its Effectiveness Be Improved? 03. Use of the AG/HCO3 Ratio in the Diagnosis of Mixed Acid-Base Disorders. 04. Fundamentals of Arterial Blood Gas Interpretation. 05. ABG Analyzer for Electrolyte Measurement in ICU Patients: To Do or Not to Do. 06. Stewart Acid-Base: A Simplified Bedside Approach.