Arterial blood gas (ABG) sampling is a commonly performed procedure which allows healthcare professionals to quickly obtain information on a patient’s respiratory status (blood oxygen and carbon dioxide levels), as well as the patient’s acid-base balance. Taking an arterial blood gas (ABG) involves using a needle and syringe to directly sample blood from an artery (usually the radial artery). Below is a step by step guide explaining how to take an arterial blood gas sample. Check out the ABG OSCE mark scheme here. If you’d like to learn more about interpreting an ABG then check out our guide here or test yourself with our ABG quiz. If you’re unsure how to document the results of an ABG in the notes then check out this guide.
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