• Eui-Seok Park, Byung Gun Lim, Won-Joon Lee, and Il Ok Lee.
• Department of Anaesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, 148, Gurodong-ro, Guro-gu, Seoul, 08308, Republic of Korea.
• BMC Anesthesiol. 2016 Aug 2; 16 (1): 48.

BackgroundIn many countries, routine clinical anaesthesia does not always involve neuromuscular monitoring. In these clinical settings, the efficacy and safety of sugammadex use has not yet been confirmed. We investigated the efficacy and safety of sugammadex in the absence of neuromuscular monitoring.MethodsOne hundred and forty patients who underwent laryngeal microsurgery with the use of rocuronium as a neuromuscular blocking agent, without the use of a neuromuscular monitoring device, were retrospectively investigated. The patients were randomly chosen among all the patients who met the inclusion criteria at a tertiary university hospital between July 2013 and February 2015 and were allocated to group S (sugammadex group) or group P (pyridostigmine group) according to the neuromuscular reversal agent administered. Five patients were excluded from analysis and 135 patients completed the study. Primary outcome was extubation time. Secondary outcomes were anaesthesia time, the correlation between anaesthesia time and extubation time, the total amount of rocuronium, and postoperative adverse events in the post-anaesthesia care unit (PACU).ResultsExtubation time was significantly shorter in group S (6.3 ± 3.9 min) than in group P (9.0 ± 5.4 min). Anaesthesia time was also significantly shorter in group S (30.7 ± 10.3 min) than in group P (35.8 ± 12.6 min). In the patients with an anaesthesia time of 30 min or less, there was a positive correlation between anaesthesia time and extubation time in group P (r = 0.453), but there was no significant relationship in group S. The total amount of rocuronium used was higher in group S (0.62 ± 0.11 mg kg(-1)) than in group P (0.38 ± 0.14 mg kg(-1)). Postoperative adverse events in the PACU were comparable between the groups, except for tachycardia events: the incidence of tachycardia was significantly lower in group S (8.0 %) than in group P (17.3 %).ConclusionsSugammadex could shorten anaesthesia and extubation times as well as recovery time in the PACU and reduce postoperative hemodynamic complications in a clinical setting in the absence of neuromuscular monitoring. This may enhance the patients' recovery in the operating room and PACU while improving the postoperative condition of patients.Trial RegistrationThe trial was registered in the UMIN clinical trials registry ( www.umin.ac.jp/ctr/index/htm ; unique trial number: UMIN000016602; registration number: R000019266 ; principal investigator's name: Byung Gun Lim; date of registration: February 22, 2015).

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