Q:

The physician ordered an ABG on a 41-year-old patient with COPD. Before drawing the sample from the radial artery, which of the following should be performed?

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The physician ordered an ABG on a 41-year-old patient with COPD. Before drawing the sample from the radial artery, which of the following should be performed?


  1. Check the patient’s oxygen saturation
  2. Modified Allen test
  3. Nail bed blanching
  4. Blood pressure measurement

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