Feasibility of Attachable Ring Stimulator for Intraoperative Neuromonitoring during Thyroid Surgery

Jongjin Kim, Hyeon Jong Moon, Young Jun Chai, Jung Man Lee, Ki Tae Hwang, Che Wei Wu, Gianlorenzo Dionigi, Hoon Yub Kim, Kyung Sik Park, Sang Wan Kim, Ka Hee Yi

Research output: Contribution to journalArticle

Abstract

Objective. Stimulator-attached dissecting instruments are useful for intraoperative nerve monitoring during thyroidectomy. The aim of this study was to evaluate the feasibility of an attachable ring stimulator (ARS) by comparing the electromyography (EMG) amplitudes evoked by an ARS and a conventional stimulator. Methods. Medical records of fourteen patients who underwent thyroidectomy using intraoperative neuromonitoring between June and August 2019 were retrospectively reviewed. The amplitudes of V1, R1, R2, and V2 signals were checked using both the ARS and a conventional stimulator, at the same point. Results. Both stimulators were tested on 20 recurrent laryngeal nerves (RLNs) and 20 vagus nerves (VNs). In all the nerves, the amplitudes of V1, R1, R2, and V2 were greater than 500 μV. The mean amplitudes of V1, R1, R2, and V2 checked with the ARS were 1175, 1432, 1598, and 1279 μV, respectively. The mean amplitudes of V1, R1, R2, and V2 checked with the conventional stimulator were 1140, 1425, 1557, and 1217 μV, respectively. Difference between amplitudes evoked by the two stimulators for V1, R1, R2, and V2 was 77, 110, 102, and 99 μV, respectively. There was no statistical difference in the amplitudes between the two groups for V1, R1, R2, and V2. Conclusion. The ARS transferred electric stimulation as effectively as the conventional stimulator. It is an effective tool for repeated stimulation and facilitates continuous feedback regarding the functional integrity of nerves during thyroid surgery.

Original languageEnglish
Article number5280939
JournalInternational Journal of Endocrinology
Volume2020
DOIs
Publication statusPublished - 2020 Jan 1

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Endocrinology
  • Endocrine and Autonomic Systems

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    Kim, J., Moon, H. J., Chai, Y. J., Lee, J. M., Hwang, K. T., Wu, C. W., Dionigi, G., Kim, H. Y., Park, K. S., Kim, S. W., & Yi, K. H. (2020). Feasibility of Attachable Ring Stimulator for Intraoperative Neuromonitoring during Thyroid Surgery. International Journal of Endocrinology, 2020, [5280939]. https://doi.org/10.1155/2020/5280939