A Double-blind, Randomized, Parallel Design Study to Compare the Effectiveness of Sugammadex Versus Neostigmine in Improving Surgical Condition in Subjects Undergoing Laryngeal Microsurgery

In sugammadex group, sugammadex (Bridion, Merck Shart and Dohme (MSD), Oss, the Netherlands) will be administered intravenously in different doses according to the degree of muscle relaxation. Sugammadex 8 mg/kg will be administered if there is no response on post-tetanic count (PTC) stimulus. Sugammadex 4 mg/kg will be administered if PTC is more than 1 or 2. Sugammadex 2 mg/kg will be administered if T2 response appears on train-of-four (TOF) stimulus.

In neostigmine group, neostigmine 50 ㎍/kg will be administered intravenously with glycopyrrolate 10 ㎍/kg when the T2 response appears on TOF stimuli.