• Hyun-Chang Kim, Sun-Min Lim, Hyungseok Seo, and Hee-Pyoung Park.
• Department of Anesthesiology and Pain Medicine, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu, Korea.
• J Anesth. 2015 Dec 1; 29 (6): 831-5.

BackgroundMuscarinic receptors are involved in the mechanism of postoperative catheter-related bladder discomfort (CRBD). Glycopyrrolate and atropine as adjuncts to reversal of neuromuscular blockers have differential inhibitory effects on muscarinic receptors. This study was conducted to compare the effect of glycopyrrolate versus atropine on postoperative CRBD in patients undergoing transurethral resection of a bladder tumor (TURBT).MethodsSeventy-four patients undergoing TURBT were randomly allocated to receive either glycopyrrolate 10 μg/kg (glycopyrrolate group, n = 37) or atropine 15 μg/kg (atropine group, n = 37) in combination with neostigmine 25 μg/kg at the end of surgery for reversal of neuromuscular blockade. The incidence and severity (mild/moderate/severe) of CRBD were assessed at 0, 1, 6, and 24 h postoperatively. Tramadol 50-100 mg was administered intravenously if the patients complained of moderate or severe CRBD.ResultsThe incidence of CRBD was significantly lower in the glycopyrrolate group than in the atropine group at 0 h (65 % vs. 89 %, p = 0.025) and 1 h (54 % vs. 89 %, p = 0.002) postoperatively. The severity of postoperative CRBD was less severe in the glycopyrrolate group than in the atropine group at 0 h (p = 0.013) and 1 h (p = 0.006). Fewer patients required tramadol in the glycopyrrolate group than in the atropine group (3 % vs. 12 %, p = 0.024).ConclusionsGlycopyrrolate as an adjunct to reversal of neuromuscular blockers decreased the incidence of early postoperative CRBD and postoperative tramadol requirements in patients undergoing TURBT when compared to atropine.

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