Anesth Pain Med Search


Anesthetic Pharmacology
Anesthesia and Pain Medicine 2013;8(4):231-236.
Published online October 30, 2013.
The effect of fentanyl pretreatment on propofol sedation during spinal anesthesia
Myoung Hwa Kim, Jung Ik Byun
Department of Anaesthesiology and Pain Medicine and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea.
To test whether propofol with fentanyl pretreatment produces better sedative efficacy than that of propofol alone in patients under spinal anesthesia.
Fifty-four patients undergoing lower leg orthopedic surgery were sedated randomly with propofol-normal saline (PN, n = 27) or propofol-fentanyl (PF, n = 27). In both groups, sedation was maintained with an initial loading dose of propofol 0.4 mg/kg, and subsequent infusion at a rate of 50 microg/kg/min. Prior to propofol administration, normal saline 0.02 ml/kg or fentanyl 1 microg/kg was given intravenously to Group PN and Group PF, respectively. We measured bispectral index (BIS) and the Observer's Assessment of Alertness/ Sedation (OAA/S) scale scores to investigate sedative efficacy, prior to and at 5 minute intervals for 1 hour after propofol infusion.
BIS and OAA/S scores were decreased in both groups over time after starting propofol infusion (P < 0.0001). Comparison between the PF group and the PN group at each time point did not demonstrate statistically significant differences, and group effect was also not found to be statistically significant for BIS and OAA/S [BIS, P = 0.4644 (group effect), P = 0.7817 (time*group interaction)], [OAA/S scale, P = 0.4373 (group effect), P = 0.125 (time*group interaction)].
Judging from the BIS and OAA/S scores, propofol with fentanyl pretreatment did not produce an additional sedative effect compared to propofol alone in spinal anesthesia.
Key Words: BIS, Fentanyl, OAA/S scale, Propofol, Sedation, Spinal anesthesia

Article category

Browse all articles >


Browse all articles >

Editorial Office
101-3503, Lotte Castle President, 109 Mapo-daero, Mapo-gu, Seoul 04146, Korea
Tel: +82-2-792-5128    Fax: +82-2-792-4089    E-mail:                

Copyright © 2024 by Korean Society of Anesthesiologists.

Developed in M2PI

Close layer
prev next