A CADAVERIC STUDY OF VARIABLE RELATIONSHIP BETWEEN RECURRENT LARYNGEAL NERVE AND INFERIOR THYROID ARTERY FROM THE PERSPECTIVE OF THYROIDECTOMY
Journal Title: Journal of Evidence Based Medicine and Healthcare - Year 2019, Vol 6, Issue 29
Abstract
BACKGROUND In this study, we have tried to find out a pattern of variable relationship between recurrent laryngeal nerve and inferior thyroid artery close to the lower pole of thyroid gland. The nerve is passing either in front, or behind the artery or the nerve branches may intermingle with the branches of the artery. Proper knowledge of the patterns is helpful for thyroid surgeons to avoid recurrent laryngeal nerve palsy (RLNP). As the RLN supplies all of the muscles of larynx except the cricothyroid, the RLNP leads to hoarseness of voice and if there is bilateral palsy, it may cause respiratory distress. METHODS 25 properly embalmed cadavers of both sexes were dissected to identify 50 nerves and arteries in the tracheo-oesophageal groove. The relations are noted, and photographs are taken. Some exclusion criteria are decided before choosing the cadavers. RESULTS Most of the nerves (52%) are found intermingling with the arterial branches. In 28% cases, nerves are passing anterior to and in 20% cases posterior to the arteries. By plotting bar diagram and using chi square test we have seen the relationship between the nerve and the artery. There is no sexual variation, but there are variations between right and left side. CONCLUSIONS During thyroidectomy, before ligation of the inferior thyroid artery, it is important to explore the recurrent laryngeal nerve. Because of the variable relationship without any pattern, the surgeon must be aware of all possibilities. There may be racial differences though.
Authors and Affiliations
Anirban Banerjee, Shantanu Nandy
Keywords
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- EP ID EP670347
- DOI 10.18410/jebmh/2019/400
- Views 73
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