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Arterial Blood Gas
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| Submitted: Tue Oct 25 2005
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Diagnostic Test Brooke Griffith ABG and carboxyhemoglobin Arterial Blood Gas Indications: An ABG is ordered as a way to assess or manage a patient's respiratory and metabolic acid/base balance. The test assesses the pH of a patient's blood and is used as an indicator for the particular cause of the acidosis or alkalosis. An ABG is also used to measure adequacy of treatment for an acid/base balance. An ABG can also be used in the measurement of adequacy of oxygenation. Type of Test and testing procedure: An ABG is usually acquired through withdrawal of arterial blood. Babies can be tested using whole blood through capillary heel sticks. An ABG is usually collected from the radial artery. Before an ABG can be preformed, a circulation test must be preformed to protect the hand's collateral blood flow. This is called the Allen Test. Allen Test- Apply pressure to the radial and ulnar arteries, eliminating blood flow to the chosen hand....
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