ISSN : 2663-2187

The Effect of Intraoperative Nerve Monitoring on Post Thyroidectomy Vocal Card Paralaysis; A Prospective Study

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Dr. Aasif Imran, Dr. Saadat Ullah Khan, Dr. Akhtar Ghani, Dr. Muhammad Wasim Sajjad, Dr. Abdul Ghafoor, Dr. Muhammad Ismail Khan
» doi: 10.48047/AFJBS.6.13.2024.8073-8079

Abstract

Objective: Thyroidectomy is a common surgical procedure for various thyroid disorders, but it carries a risk of recurrent laryngeal nerve (RLN) injury, leading to vocal cord paralysis. This study ‘aimed to evaluate the effectiveness of intraoperative nerve monitoring (IONM) in reducing the incidence of vocal cord paralysis compared to surgeries performed without IONM’. Methods: A prospective study was conducted at Khalifa Gul Nawaz Teaching Hospital, Bannu, from January 2023 to January 2024, involving 75 patients who underwent thyroidectomy. Patients were divided into the IONM group (n = 38) and the non-IONM group (n = 37). Preoperative and postoperative vocal cord function was assessed using laryngoscopy. Data on operative time, RLN identification rates, and postoperative complications, including transient and permanent vocal cord paralysis, were collected and analyzed. Results: The use of IONM significantly reduced the incidence of vocal cord paralysis. The overall rate of paralysis ‘was 5.3% in the IONM group compared to 18.9% in the non-IONM group (p = 0.048)’. RLN identification was achieved in 100% of the IONM group versus 89.2% in the non-IONM group (p = 0.036). The IONM group also demonstrated shorter operative times (p = 0.014). Transient vocal cord paralysis was lower in the IONM group, though not statistically significant, while no cases of permanent paralysis were reported in this group. Other complications, such as hypocalcemia and wound infections, were comparable between the groups. Conclusion: Intraoperative nerve monitoring significantly reduces the risk of vocal cord paralysis and improves RLN identification during thyroidectomy. These findings support the routine use of IONM, particularly in high-risk surgeries, to enhance patient safety and surgical outcomes.

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