Abstract
Purpose
Neuromuscular blocking agents (NMBA) facilitate endotracheal intubation and reduce related laryngeal morbidity. However, NMBA interfere with intraoperative neuromonitoring amplitudes during thyroidectomy. The goal of this study was to evaluate the impact of rocuronium used for tracheal intubation on early intraoperative neuromonitoring vagal amplitudes observed during first thyroid lobe dissection.
Methods
This is an observational pharmacoepidemiological study with prospective data collection and retrospective analysis. During the study period, all consecutive patients who underwent thyroid surgery with neuromonitoring were included. Patients underwent endotracheal intubation either using a single dose of rocuronium (NMBA group) or without NMBA (NMBA-free group) according to the anesthesiologist’s preference.
Results
Six hundred six patients were included (213 NMBA and 393 NMBA-free group patients). At V1, 39 patients (18%) in the NMBA group had an amplitude < 100 µV (need for curarization reversal in 30 patients) and 13 patients (3.3%) in the NMBA-free group (p < 0.001). In the remaining 554 patients, the mean V1 amplitude was significantly decreased in the NMBA group (544 versus 685 µV; p < 0.001). After exclusion of 25 patients with loss of signal types 1 and 2 during dissection, the difference between mean V1 and mean V2 was significantly lower in NMBA group patients (− 22 versus − 86 µV; p = 0.016).
Conclusion
This study provides new data showing how NMBA used for tracheal intubation significantly decrease V1 amplitude baseline and modify amplitude variations from V1 to V2 values during the first thyroid lobe dissection.
Level of evidence
Pharmacoepidemiological study
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Data availability
Data are available if needed.
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Empis de Vendin O, acquisition of data, analysis and interpretation of data, and drafting of the manuscript; Fuchs-Buder T, study conception and design and critical revision of the manuscript; Schmartz D, analysis and interpretation of data and drafting of the manuscript; Nguyen DT, analysis and interpretation of data; Gallet P, acquisition of data and critical revision of the manuscript; Bihain F, acquisition of data and drafting of the manuscript; Nomine-Criqui C, acquisition of data and critical revision of the manuscript; and Brunaud L, study conception and design, acquisition of data, analysis and interpretation of data, and critical revision of the manuscript.
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Nancy CHRU University Hospital ethics committee, CPP Saisine N° 277 by 2020 August 25th (please see corresponding letter).
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Informed consent was obtained for each patient using a declared form (CNIL N° DC2014-2114).
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Informed consent was obtained for each patient using a declared form (CNIL N° DC2014-2114). This observational data collection was declared (CNIL N° R2015-22) and registered at clinicaltrials.gov (NCT03309384).
Competing of interest
TFB received honoraria from Merck (for lectures). All other authors have nothing to disclose.
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This paper was presented at the ESES meeting (European Society of Endocrine Surgery) May 16–18 2019 Granada Spain (Best oral presentation).
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de Vendin, O.E., Fuchs-Buder, T., Schmartz, D. et al. Impact of rocuronium on intraoperative neuromonitoring vagal amplitudes during thyroidectomy. Langenbecks Arch Surg 406, 2019–2025 (2021). https://doi.org/10.1007/s00423-021-02234-5
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DOI: https://doi.org/10.1007/s00423-021-02234-5