The most common needle size for routine radial ABG specimen collection is

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Multiple Choice

The most common needle size for routine radial ABG specimen collection is

When collecting arterial blood gases from the radial artery, the goal is to obtain a fast, clean sample with minimal trauma. A 22-gauge needle provides that balance nicely: it’s large enough to permit a brisk draw into a heparinized syringe, reducing the chance of a slow collection or clotting, but not so large that it causes unnecessary tissue damage or arterial spasm. Using a larger needle increases trauma and discomfort and raises spasm risk, while a much smaller needle can slow the draw and complicate sample collection. So the 22-gauge needle is the standard choice for routine radial ABG collection.

When collecting arterial blood gases from the radial artery, the goal is to obtain a fast, clean sample with minimal trauma. A 22-gauge needle provides that balance nicely: it’s large enough to permit a brisk draw into a heparinized syringe, reducing the chance of a slow collection or clotting, but not so large that it causes unnecessary tissue damage or arterial spasm. Using a larger needle increases trauma and discomfort and raises spasm risk, while a much smaller needle can slow the draw and complicate sample collection. So the 22-gauge needle is the standard choice for routine radial ABG collection.

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