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Updated: Jan 7, 2026
Intra-Operative Neural Monitoring of Thyroid Surgery in a Porcine Model
Published on: February 11, 2019
A Novel Connector for Intraoperative Nerve Monitoring Probes in Endoscopic Thyroidectomy: Comparative Efficacy and
Parnwad Chairat1, Paveena Pithuksurachai1, Cheerasook Chongkolwatana1
1Department of Otorhinolaryngology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.
Background:
This study aimed to develop a connector that adapts standard endoscopic instruments into functional nerve stimulator probes.
Methods:
The connector underwent engineering validation in a laboratory and preclinical testing using a porcine model. A handheld standard stimulator probe served as the control. The experimental group consisted of a long monopolar probe and two connector-adapted probes. Recurrent laryngeal nerve (RLN) and vagus nerves were stimulated to compare the efficacy and safety of the adapted probes with the standard probe.
Results:
The connector, when coupled to endoscopic instruments, did not show a statistically significant difference in electromyographic (EMG) amplitude at 1 mA stimulation compared with the standard probe. Safety analysis showed no significant hemodynamic effects.
Conclusion:
This proof-of-concept study demonstrates that the developed connector, when paired with endoscopic instruments, enables reliable nerve identification and preservation during endoscopic thyroid surgery, with favorable efficacy and safety profiles.
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