Arterial Blood Gases. ABGs. Samples and Management. Samples are obtained from a needle puncture into the peripheral artery or from an arterial line. ABG samples must be mixed with heparin to prevent coagulation.
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Acid base balance
This can help indicate respiratory, cardiac, renal and metabolic disorders.
If the pCO2 is abnormal and the HCO3 normal this indicates respiratory irregularity.
If the HCO3 is abnormal and pCO2 normal this indicates metabolic irregularity.
4. If both pC02 and HCO3 values are abnormal then you need to investigate which is the primary disorder.
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