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Updated: Jun 24, 2025
Intra-Operative Neural Monitoring of Thyroid Surgery in a Porcine Model
Published on: February 11, 2019
Intraoperative neuromonitoring during thyroidectomy does not decrease vocal cord palsy risk, but the cumulative
Hye Lim Bae1, Moon Young Oh2, Mira Han3
1Department of Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea.
Intraoperative neuromonitoring (IONM) did not significantly reduce vocal cord palsy (VCP) rates after thyroidectomy. However, surgeon experience appears to decrease VCP risk over time.
Area of Science:
- Endocrinology
- Surgical Oncology
- Neurosurgery
Background:
- Thyroidectomy is a common procedure for thyroid cancer.
- Vocal cord palsy (VCP) is a potential complication.
- Intraoperative neuromonitoring (IONM) is used to minimize nerve damage.
Purpose of the Study:
- To evaluate the impact of IONM on VCP rates.
- To assess temporal trends in VCP following thyroidectomy.
Main Methods:
- Retrospective analysis of 712 patients undergoing thyroidectomy for thyroid cancer (2014-2022).
- Comparison of VCP rates between non-IONM and IONM groups.
- Analysis of risk factors and temporal trends in VCP.
Main Results:
- No significant difference in transient or permanent VCP rates between non-IONM and IONM groups.
- Transient VCP: 4.6% (non-IONM) vs. 4.3% (IONM).
- Permanent VCP: 0.7% (non-IONM) vs. 0.4% (IONM).
- A significant decreasing trend in VCP rates observed over time (p=0.017).
Conclusions:
- IONM did not significantly reduce VCP risk in this study.
- Increasing surgeon experience may be associated with lower VCP rates.
- Further research may explore the role of experience in VCP prevention.
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