Modulation of Propofol Injection Pain by Rubbing and Distraction

gently touching on proximal part of the IV injection site with the palm of the hand extending to the elbow. This will be started 5 seconds before propofol injection (not mixed with any drug) and continued until loss of consciousness. Also, a mobile video with duration of 10 seconds will be used for distraction and will be started 5 seconds before propofol injection so as to be ended at the time of first pain assessment.

lidocaine will be used by mixing it with the propofol before intravenous injection

intravenous propofol will be given without mixing with any drug (except for 2 ml saline to ensure blindness of the outcome assessor).