A phlebotomist must collect an ABG specimen when the patient is breathing room air. The patient has just been taken off the ventilator when the phlebotomist arrives. When can the phlebotomist draw the ABG specimen?
A. after 1 hour
B. immediately
C. in 5 to 10 minutes
D. in 20 to 30 minutes
Answer: D. in 20 - 30 minutes
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