This document provides information about arterial blood gases (ABGs), including how to perform an ABG, normal ranges for ABG values, and how to interpret ABG results. It discusses how to determine if a patient has a respiratory or metabolic acidosis or alkalosis based on ABG values such as pH, pCO2, and HCO3-. It also covers oxygenation status, compensation, mixed acid-base disturbances, and causes of hypoxemia, respiratory acidosis/alkalosis, and metabolic acidosis/alkalosis.