Arterial blood gas test explained for nurses, including its purpose, procedure, and interpretation to improve patient care. Introduction: Interpreting an arterial blood gas (ABG) is a crucial skill for physicians, nurses, respiratory therapists, and other health care personnel. ABG interpretation is especially important in critically ill patients. The following six-step process helps ensure a complete interpretation of every ABG. Abstract Arterial blood gas is a basic investigative tool in monitoring acid base balance of critically ill patients. It is also indispensible in monitoring gas exchange, diagnosing and managing oxygenation. A thorough knowledge regarding ABG interpretation is an absolute necessity for the critical care physician. However, a complete and thorough understanding of arterial blood gases and its interpretation is an arduous task and the literature to guide the interpretation are aplenty and ... Complete guide to the Arterial Blood Gas ( ABG ) test cost, procedure, normal range, risks, and how it helps detect lung and metabolic issues early.