![]() ![]() Determine if pH compensated or uncompensatedġ.Determine if the issue is respiratory or metabolic.Determine if the pH is alkalosis or acidosis.Collect and run an arterial blood sample.The simplified steps for ABG interpretation include: Interpreting an arterial blood gas (ABG) involves a step-by-step approach to make accurate and timely clinical decisions. Therefore, ABG results should always be interpreted in the context of the overall clinical picture. ![]() Note: While these are standard reference ranges, individual patient circumstances such as age, comorbidities, and specific clinical conditions may alter what is considered “normal” for that person. Normal values for arterial blood gas (ABG) components can vary slightly depending on the laboratory and the patient population, but they generally fall within the following ranges: The test also plays a critical role in monitoring critically ill patients and guiding therapeutic interventions. These components collectively offer valuable insights into a patient’s respiratory efficiency, metabolic function, and acid-base balance.Ĭlinicians use ABG results to diagnose and manage a wide variety of medical conditions, including respiratory failure, metabolic disorders, and acid-base imbalances. SaO2 (Arterial Oxygen Saturation): Indicates the percentage of hemoglobin molecules saturated with oxygen.HCO3- (Bicarbonate): Provides insight into the metabolic component of acid-base balance.PaO2 (Partial Pressure of Oxygen): Represents the ability of the respiratory system to supply oxygen to the arterial blood. ![]() PaCO2 (Partial Pressure of Carbon Dioxide): Indicates the effectiveness of the respiratory system in eliminating carbon dioxide.pH: Measures the acidity or alkalinity of the blood. ![]() The primary components analyzed in an ABG include: ![]()
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