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Latest revision as of 02:32, 25 September 2026
Which of the following decreases the pain of injection of IV propofol?
A. Slowing the speed of injection
B. Warming the injectate
C. Preinjection of IV of lidocaine/analgesics
D. Lidocaine-tourniquet technique (Bier block)
E. Increasing the size of vein selected for injection
Click for Answer
Answer
The answer is D.
A systematic review in A&A reviewed the various "cures" for pain on injection of propofol. The only one that seemed to be effective was the Bier block like technique. IV lidocaine (0.5 mg/kg) should be given with a [rubber] tourniquet on the forearm, 30 to 120 s before the injection of propofol; lidocaine will prevent pain in approximately 60% of the patients treated in this manner.[1]
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