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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