Which artery is commonly used for ABG sampling?

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Multiple Choice

Which artery is commonly used for ABG sampling?

The radial artery is the preferred site for arterial blood gas sampling because it is easy to access at the wrist, close to the surface, and usually provides a clean sample with minimal discomfort. A key safety feature is the collateral blood supply to the hand from the ulnar artery, which can be checked with an Allen test before puncture to ensure the hand will stay perfused if the radial artery is used. Compared with deeper arteries like the brachial or the femoral, the radial site carries a lower risk of serious complications, easier hemostasis after sampling, and generally less risk of infection or injury to nearby structures. If the radial artery isn’t suitable, other sites can be used, but they come with higher risks and more technical challenges.

The radial artery is the preferred site for arterial blood gas sampling because it is easy to access at the wrist, close to the surface, and usually provides a clean sample with minimal discomfort. A key safety feature is the collateral blood supply to the hand from the ulnar artery, which can be checked with an Allen test before puncture to ensure the hand will stay perfused if the radial artery is used. Compared with deeper arteries like the brachial or the femoral, the radial site carries a lower risk of serious complications, easier hemostasis after sampling, and generally less risk of infection or injury to nearby structures. If the radial artery isn’t suitable, other sites can be used, but they come with higher risks and more technical challenges.

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