Injection of propofol is associated with discomfort in subsets of patients. Local anesthetics
have been shown to attenuate this response in some patients. This randomized, double-blind,
placebo-controlled trial tests the hypothesis that lidocaine mixed with propofol will be
superior to lidocaine administered directly into the vein, under tourniquet control, prior to
injection of propofol. Both groups are expected to be superior to placebo.