[Efficacy of simultaneous bolus injection of lidocaine with propofol on pain caused by propofol injection].
To investigate the effect of simultaneous bolus injection of 2% lidocaine 2 ml on preventing the pain on propofol injection, 80 patients were randomly assigned to one of four study groups; Group I received simultaneous bolus injection of 2% lidocaine 2 ml with infusion of propofol; Group II received bolus injection of saline 2 ml, 10 s before the start of infusion of propofol-lidocaine mixture; Groups III and IV received bolus injections of lidocaine and saline, separately 10 s before starting propofol infusion. Incidence of propofol-induced pain was significantly more frequent (P < 0.001) in Group IV (70%) than in the other groups (20% each). Number of patients who were satisfied with this anesthetic induction and requested for the same induction method in the next anesthesia was significantly larger in the groups receiving lidocaine (P < 0.05). Simultaneous bolus injection of lidocaine with propofol showed a similar clinical efficacy compared with both preadministration and premixing of lidocaine in preventing the propofol-induced pain.
Tsubokura
H
H
Department of Anesthesiology and Reanimatology, Tottori University Faculty of Medicine, Yonago 683-8504.
Inagaki
Y
Y
Adachi
H
H
Otsuki
A
A
Harada
T
T
Hirosawa
J
J
Ishibe
Y
Y
D000328:Adult; D000368:Aged; D018686:Anesthetics, Intravenous / Q000009:adverse effects*; D000779:Anesthetics, Local / Q000008:administration & dosage*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007275:Injections, Intravenous; D008012:Lidocaine / Q000008:administration & dosage*; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000517:prevention & control*; D015742:Propofol / Q000009:adverse effects*
D018686:Anesthetics, Intravenous; D000779:Anesthetics, Local; D008012:Lidocaine; D015742:Propofol