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arterial blood gas
(redirected from Arterial blood gas analysis)

   Also found in: Acronyms, Wikipedia 0.01 sec.
arterial blood gas (ABG),
the oxygen and carbon dioxide content of arterial blood, measured by various methods to assess the adequacy of ventilation and oxygenation and the acid-base status of the body. Oxygen saturation of hemoglobin is normally 95% or higher. The partial pressure of arterial oxygen, normally 80 to 100 mm Hg, is increased in hyperventilation and decreased in cardiac decompensation, chronic obstructive pulmonary disease, and certain neuromuscular disorders. The partial pressure of carbon dioxide, normally 35 to 45 mm Hg, may be higher in emphysema, chronic obstructive pulmonary disease, and reduced respiratory center function; it may be lower in pregnancy and in the presence of pulmonary emboli and anxiety.

arterial blood gas
Critical care Analysis of arterial blood for O2, CO2, bicarbonate content, and pH, which reflects the functional effectiveness of lung function and to monitor respiratory therapy Ref range pO2, 75-100 mm Hg; pCO2, 35-45 mm Hg; pH: 7.35-7.42, O2 content: 15-23%; O2 saturation, 94-100%; HCO3, 22-26 mEq/L. See Metabolic acidosis, Metabolic alkalosis, Respiratory acidosis, Respiratory alkalosis.


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AARC clinical practice guideline, sampling for arterial blood gas analysis.
This linear relationship between the PCO2 of arterial blood and chemoreceptor tissue negates the need for successive arterial blood gas analysis to demonstrate the correlation PaCO2 with end tidal carbon dioxide (ETCO2).
Ideally, an arterial blood gas analysis should be performed in most patients to assess the severity of the exacerbation, as well as to establish a baseline from which improvement or deterioration can be measured.
 
 
 
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