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Effects of preanesthetic single administration of dexmedetomidine on the remifentanil and propofol requirement during laparoscopic cholecystectomy
Anesth Pain Med 2019;14(1):29-34
Published online January 31, 2019
© 2019 Korean Society of Neuroscience in Anesthesiology and Critical Care.

Han Park , Heung Soo Kim , Jae Won Kim , Gang Geun Lee , Dong Ho Park , Chang Young Jeong , Sun Gyoo Park , and Keon Hee Ryu
Department of Anesthesiology and Pain Medicine, Eulji University Hospital, Daejeon, Korea
Correspondence to: Keon Hee Ryu, M.D., Ph.D. Department of Anesthesiology and Pain Medicine, Eulji University Hospital, 95 Dunsanseo-ro, Seo-gu, Daejeon 35233, Korea Tel: 82-42-611-3655 Fax: 82-42-611-3882 E-mail: ryu4912@naver.com
Received February 7, 2018; Revised July 26, 2018; Accepted July 26, 2018.
cc This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract

Background:

Dexmedetomidine, an α2-adrenergic agonist, can be used for sedation and as an adjuvant to anesthetics. This study aimed to evaluate the effects of preanesthetic administration of dexmedetomidine on the propofol and remifentanil requirement during general anesthesia and postoperative pain in patients undergoing laparoscopic cholecystectomy.

Methods:

Sixty patients were randomly assigned to group D or S (n = 30 each). Dexmedetomidine (0.5 µg/kg) and a comparable volume of saline were administered in groups D and S, respectively, over a 10 minutes period before induction. General anesthesia was induced and maintained with propofol and remifentanil; the bispectral index was maintained at 40–60. The intraoperative remifentanil and propofol dosages were recorded, and postoperative pain was assessed using a visual analog scale (VAS).

Results:

In groups S and D, propofol dosage was 8.52 ± 1.64 and 6.83 ± 1.55 mg/kg/h, respectively (P < 0.001), while remifentanil dosage was 7.18 ± 2.42 and 4.84 ± 1.44 µg/kg/h, respectively (P < 0.001). VAS scores for postoperative pain were 6.50 (6–7) and 6.0 (6–7), respectively, at 30 minutes (P = 0.569), 5 (4–5) and 4 (3–5), respectively, at 12 hours (P = 0.039), and 2 (2–3) and 2 (1.25–2), respectively, at 24 hours (P = 0.044). The Friedman test revealed that VAS scores changed over time in both groups (P < 0.001).

Conclusions:

Preanesthetic single administration of a low dose of dexmedetomidine (0.5 µg/kg) can significantly decrease the remifentanil and propofol requirement during short surgeries and alleviate postoperative pain.

Key Words : Anesthetics, Dexmedetomidine, Laparoscopic cholecystectomy, Propofol, Remifentanil


April 2019, 14 (2)
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