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Research Journal of Pharmacy and Technology
Year : 2020, Volume : 13, Issue : 7
First page : ( 3419) Last page : ( 3424)
Print ISSN : 0974-3618. Online ISSN : 0974-360X.
Article DOI : 10.5958/0974-360X.2020.00608.3

Segregated ligation of the superior thyroid artery minimize postthyroidectomy injury to the external branch of superior laryngeal nerve, a novel practical approach

Al-Rekabi Adel Mosa Ahmed*

Department of Surgery, College of Medicine, University of Al-Qadisiyah, Iraq

*Corresponding Author E-mail: adil.ahmed@qu.edu.iq

Online published on 10 August, 2020.

Abstract

Background

External division of the superior laryngeal nerve supplies the crico-thyroid muscle to excite length and thickness of the vocal fold. Thus, increasing voice tone. The vicinity with the superior thyroid vessels sets the external branch of the superior laryngeal nerve in danger every time the superior end of the thyroid is dissected.

Objective

Thus, the aim of present study is to assess the rate and complication of external branch of the superior laryngeal nerve injury post-thyroidectomy when segregated ligation of superior thyroid vessels closes to thyroid capsule without prior nerve identification and without nerve stimulator or intraoperative neuromonitoring.

Patients and Methods

The presented study is a prospective, non-randomized clinical study included 1450 patients who underwent thyroidectomy which either (total thyroidectomies, near total thyroidectomies or lobectomy and isthmectomy) in the Department of Surgery/AL-Diawania Teaching Hospital in Diawania City, Iraq, between January 2000 and February 2018. All patients underwent thyroidectomy through segregated ligation of superior thyroid artery very closely to thyroid capsule without prior nerve identification and without nerve stimulator or intraoperative neuromonitoring. Postoperative indirect laryngoscopy vocal cord examination with long term follow up through physical examination and clinical history to evaluate nerve integrity.

Results

In present study, the total cases with EBSLN injury were 38 (2.6%), in which the transient EBSLN injury occurred in 28 (1.9%) of patients and permanent injury occurred in 10 (0.7%) of patients and majority of cases with EBSLN injury were occur in patients with large size goiter 29 (2%) more than small size goiter 9 (0.6%) And these differences were statistically significant differences, (P<0.005). In addition to, the majority of cases with EBSLN injury were occur in male {25(1.7%)} more than female patients {13(0.9%)} And these differences were statistically significant differences, (P<0.005).

Conclusion

Segregated ligation of superior thyroid artery is a safe technical option, cost effective, time preserved and need surgical skills to minimized risk of injury to the external laryngeal nerve.

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Keywords

Thyroidectomy, Segregated ligation of superior thyroid artery, external laryngeal nerve injuries.

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