scholarly journals Bilateral Investigation of the Anatomical Relationships of the External Branch of the Superior Laryngeal Nerve and Superior Thyroid Artery, and also the Recurrent laryngeal Nerve and Inferior thyroid Artery

2001 ◽  
Vol 78 (2-3) ◽  
pp. 65-74 ◽  
Author(s):  
Mine POYRAZ ◽  
Engin CALGUNER
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Superior Laryngeal Nerve ◽  
Laryngeal Nerve ◽  
Inferior Thyroid Artery ◽  
Superior Thyroid Artery ◽  
External Branch

scholarly journals Assessment of Relation between External Branch of Superior Laryngeal Nerve & Thyroid Gland- A Cadaveric Study

2020 ◽  
Vol 6 (2) ◽  
pp. 73-76
Author(s):  
Anurag ◽  
Vishnu Gupta
Keyword(s):  
Thyroid Gland ◽  
Cricoid Cartilage ◽  
Superior Laryngeal Nerve ◽  
Laryngeal Nerve ◽  
The Body ◽  
Superior Thyroid Artery ◽  
Group I ◽  
External Branch ◽  
The Mean ◽  
Group Ii

Background: The thyroid gland is essential for normal growth of the body. This study assessed relation of external branch of superior laryngeal nerve to the superior pole of the thyroid gland. Subjects and Methods: This study was conducted on 25 human cadavers having 50 superior thyroid poles of both genders. Cadavers were classified based on age groups, group I was those with age less than 39 years and group II cadavers were those with age more than 40 years of age. Various measurements were performed on cadavers. Results: 14 cadavers were I group I and 11 were in group II. The mean mass was 67.2 Kgs in group I and 59.5 Kgs in group II, time elapsed after death was 481.5 minutes in group I and 476.4 minutes in group II, mean height was 1.74 meters in group I and 1.69 meters in group II, mean BMI found to be 22.3 kg/m2in group I and 20.1 kg/m2in group II. Height found to be significant between both groups (P< 0.05). The mean distance from EBSLN to cranial point of the thyroid gland was 6.66 mm in group I and 8.96 mm in group II. The mean transverse distance from superior thyroid artery to EBSLN was 3.55 mm in group I and 5.12 mm side in group II. The mean distance of the crossing point between the most cranial point of the thyroid lobe was 6.40 mm in group I and 11.47 mm in group II. The mean distance from the EBSLN to the midline of the neck was 19.80 mm in group I and 18.58 mm in group II. The mean distance from the EBSLN to the midline of the neck on the most cranial point of the cricoid cartilage was 18.77 mm in group I and 17.80 mm in group II. Conclusion: Authors found variation in measurements in left and right side in both group I and group II.

Vocal fold palsy after use of the laryngeal mask airway

1996 ◽  
Vol 110 (4) ◽  
pp. 383-384 ◽  
Author(s):  
Hamid Daya ◽  
William J. Fawcett ◽  
Neil Weir
Keyword(s):  
Laryngeal Mask Airway ◽  
Recurrent Laryngeal Nerve ◽  
Vocal Fold ◽  
Superior Laryngeal Nerve ◽  
Laryngeal Nerve ◽  
Laryngeal Mask ◽  
External Branch ◽  
Vocal Fold Palsy

AbstractWe report two cases of left vocal fold palsy following use of the laryngeal mask airway. In both cases anaesthesia was uneventful with a duration of about 60 minutes. It is proposed that high intra-cuff pressures induced during anaesthesia resulted in distension of the hypopharynx and subsequent neuropraxia of the motor branches of the recurrent laryngeal nerve and the external branch of the superior laryngeal nerve.

scholarly journals Does the Position of External Branch of Superior Laryngeal Nerve change with the Height of the Patients and the Length of the Larynx

2012 ◽  
Vol 4 (1) ◽  
pp. 1-2
Author(s):  
Kithsiri J Senanayake ◽  
Ranil Fernando ◽  
Sujatha Salgado ◽  
Manjula Jayanthi
Keyword(s):  
Strong Correlation ◽  
Superior Laryngeal Nerve ◽  
Laryngeal Nerve ◽  
Superior Thyroid Artery ◽  
Strongly Correlated ◽  
Moderate Correlation ◽  
Anatomical Position ◽  
External Branch ◽  
The Mean ◽  
The Difference

ABSTRACT When the external branch of superior laryngeal nerve (EBSLN) crosses the superior thyroid artery closer to thyroid upper pole, the EBSLN has a higher risk of getting damaged. Its anatomical position in relation to thyroid upper pole may vary with changing the height of patient and the length of larynx. We intended to test this hypothesis and predict the risk. Thirty cadavers of both sexes are dissected (29-87 years, mean 69). One cadaver excluded due to a goiter and five nerves were damaged during dissection. Therefore, 53 nerves were studied. The distance from upper pole of thyroid to the point where the nerve crosses the superior thyroid artery (TS) was measured. Cadaver length (CL), cricothyroid length (CT) and the cricohyoid length (CH) measured to the closest millimeter. Correlation of TS with CL, CT and CH was measured. The mean distance from the upper pole of the thyroid to the point where EBSLN crosses superior thyroid artery was 6.24 mm (SD 5.94). On right side, the mean distance was 4.03 mm (SD 5.34) and, on the left, 8.37 mm (SD 5.7 mm). The difference between two means was significant at 0.05 (t = 2.82, p = 0.007). There was a strong correlation between distance from the upper pole of the thyroid to the point where the nerve crosses the superior thyroid artery with CL (r = 0.98). There was moderate correlation with the CT and CH lengths (r = 0.55, 0.58 respectively). The position of EBSLN in relation to thyroid upper pole is strongly correlated with the height of the patient. The EBSLN crosses superior thyroid artery more closely to thyroid upper pole in right side. How to cite this article Senanayake KJ, Fernando R, Salgado S, Jayanthi M. Does the Position of External Branch of Superior Laryngeal Nerve change with the Height of the Patients and the Length of the Larynx. World J Endocr Surg 2012;4(1):1-2.

Preservation of the Laryngeal Nerves during Total Thyroid Lobectomy

1977 ◽  
Vol 86 (6) ◽  
pp. 777-788 ◽  
Author(s):  
John M. Loré ◽  
Duck J. Kim ◽  
Samir Elias
Keyword(s):  
Recurrent Laryngeal Nerve ◽  
Total Thyroidectomy ◽  
Vocal Cord ◽  
Superior Laryngeal Nerve ◽  
Laryngeal Nerve ◽  
Parathyroid Glands ◽  
External Branch ◽  
Thyroid Lobectomy ◽  
Maximum Protection

A technique of exposure and preservation of the recurrent laryngeal nerve at the very onset of thyroidectomy and preservation of the external branch of the superior laryngeal nerve at the close of the procedure is described, which is believed to afford maximum protection to these nerves during total thyroid lobectomy and isthmusectomy as well as total thyroidectomy. At the same time, preservation of the parathyroid glands is achieved. In 120 exposures and preservations of the recurrent laryngeal nerve there have been no instances of a single permanent paralysis of this nerve. In 111 total thyroid lobectomies in which the external branch of the superior laryngeal nerve was placed in jeopardy, only one patient had a slight bowing of the vocal cord with excellent voice function during a limited follow-up period.

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