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Updated: Aug 10, 2026

Intra-Operative Neural Monitoring of Thyroid Surgery in a Porcine Model
Published on: February 11, 2019
Recurrent laryngeal nerve monitoring during cricotracheal resection
1Department of Otolaryngology-Head and Neck Surgery, Loyola University Medical Center, Maywood, Illinois 60153, USA.
Abstract:
Cricotracheal resection has been advocated in the management of severe subglottic stenosis. One of the possible complications of this procedure is injury to the recurrent laryngeal nerve (RLN). We describe a new technique in which electrodes are placed directly through the thyroid cartilage to monitor the RLN intraoperatively. Nine cats' left vocal cords were monitored, and 3 cats had unilateral vocal cord injury postoperatively: 1 right cord and 2 left cords. Even though this technique was efficacious, our ability to monitor the RLNs was difficult secondary to difficulty interpreting the nerve monitor's wave morphologies. The future use of RLN nerve monitoring during cricotracheal resection will depend upon the ability to distinguish true stimulation from artifact. Monitoring of the RLN could be beneficial in patients with previous operations for subglottic stenosis.
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