• M H Nathanson, N M Gajraj, and J A Russell.
• Department of Anesthesia, Lincoln County Hospital, United Kingdom.
• Anesth. Analg. 1996 Mar 1;82(3):469-71.

AbstractWe undertook a randomized, placebo-controlled, double-blind study to compare the use of alfentanil 1 mg and lidocaine 40 mg for the reduction of pain during injection of propofol. Eighty-nine patients were randomly allocated to one of three groups: Group L, lidocaine 40 mg added to 180 mg propofol; Group A, alfentanil 1 mg 30 s prior to propofol; or Group P, placebo (normal saline). The incidence of pain in the placebo group was 67%. Both treatment groups had a significantly lower incidence of pain than the placebo group (P < 0.002). There was no significant difference in the incidence of pain between the groups receiving lidocaine or alfentanil (13% and 24%, respectively). There was no significant difference in the induction dose of propofol between the groups. Fifty-two percent of patients who experienced pain at induction had recall of that pain in the recovery room. Alfentanil 1 mg and lidocaine 40 mg are both effective in reducing pain during injection of propofol.

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