Interpreting Arterial Blood Gas and the Role of Nurses in Caring for Patients with Abnormal Arterial Blood Gas


  • Nuttapol Chaihan Faculty of Nursing, Rattana Bundit University
  • Kanlaya Munluan Faculty of Nursing, Rattana Bundit University
  • Pennapa Lafauy Faculty of Nursing, Panyapiwat Institute of Management
  • Jitprapa Rungruang Faculty of Nursing, Dhonburi Rajabhat University
  • Anucha Wimoonchart Faculty of Science, Rangsit University


Arterial blood gas, Interpretation of arterial blood gas, Acid–base balance, Role of nurses


Abnormalities in the body's acid-base balance can lead to critical complications. In certain cases, the irregularity is so severe that it poses a life-threatening risk to the patient. Nurses must be able to do arterial blood gas (ABG) analysis. The objectives of this article are to: 1) present the physiological basis for arterial blood gas evaluation; 2) present a systematic 5-step blood gas analysis method; and 3) present the role of nurses in caring for patients with abnormal arterial blood gas values. The steps in evaluating and analyzing arterial blood gases consist of determining: 1) the partial pressure of O2 in arterial blood; 2) the concentration of hydrogen ions; 3) the respiratory and metabolic components; 4) whether the respiratory or metabolic value is consistent with the pH value; and 5) whether compensation is present. Three case scenarios are also provided to assist the reader in practicing ABG interpretation. The ability to reliably assess ABGs enables nurses to assist in restoring a patient's acid-base balance.


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How to Cite

Chaihan, N. ., Munluan, K., Lafauy, P., Rungruang, J. ., & Wimoonchart, A. (2024). Interpreting Arterial Blood Gas and the Role of Nurses in Caring for Patients with Abnormal Arterial Blood Gas. Nursing Journal CMU, 51(1), 237–250. Retrieved from



Academic Article