You Are Asked to Perform a Radial Artery Puncture on an Unconscious

question 19

Multiple Choice

You are asked to perform a radial artery puncture on an unconscious patient. How can you confirm the presence of collateral circulation?
I.Use a Doppler transducer to assess thumb blood flow with radial obstruction.
II.Use a pulse oximeter to assess thumb blood flow with ulnar obstruction.
III.Use a pulse oximeter to assess thumb blood flow with radial obstruction.

• A)I and II
• B)I and III
• C)II and III
• D)I, II, and III

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