Poster Board Number: 20
There are separate poster presentation times for odd and even posters.
Odd poster #s – first hour
Even poster #s – second hour
Co-authors:
Carlos Eduardo de Carvalho - Universidade do Estado do Amazonas; Wendrel dos Santos - Universidade do Estado do Amazonas; Maria do Socorro Nascimento - Universidade do Estado do Amazonas; Flávia Alessandra Albuquerque - Universidade do Estado do Amazonas; Maria Eduarda Barbosa - Universidade do Estado do Amazonas; Amanda Carvalho - Universidade do Estado do Amazonas; Marcelo Vinicius Coelho - Universidade do Estado do Amazonas; Luiz Eduardo Coutinho - Universidade do Estado do Amazonas; Bernardo Junior da Silva - Universidade do Estado do Amazonas; Heitor de Araújo - Universidade do Estado do Amazonas; Andressa Vitória de Souza - Universidade do Estado do Amazonas; Amanda Delgado - Universidade do Estado do Amazonas; Maria Vitória Dias - Universidade do Estado do Amazonas; Samira dos Santos - Universidade do Estado do Amazonas; Kennedy e Silva - Universidade do Estado do Amazonas; Rayssa Faria - Universidade do Estado do Amazonas; Rhayná Farias - Universidade do Estado do Amazonas; Ana Beatriz Marins - Universidade do Estado do Amazonas; Matheus Moraes - Universidade do Estado do Amazonas; Sindy Emanuelly Nascimento - Universidade do Estado do Amazonas; Frank Oliveira - Universidade do Estado do Amazonas; Michelle Pereira - Universidade do Estado do Amazonas; Geovana Pontes - Universidade do Estado do Amazonas; Ayla Greci Ribeiro - Universidade do Estado do Amazonas; Christiane Rodrigues - Universidade do Estado do Amazonas; Pedro Rodrigues - Universidade do Estado do Amazonas; Thamires Santos - Universidade do Estado do Amazonas; Gabrielle Sousa - Universidade do Estado do Amazonas; Kelly Victória Teixeira - Universidade do Estado do Amazonas; Maria Clara Vasques - Universidade do Estado do Amazonas
Abstract Body : The vertebral artery normally arises from the first part of the subclavian artery and is medial to the thyrocervical trunk, enters through the transverse foramen of the sixth cervical vertebra (C6) and passes through the transverse processes of the upper cervical vertebrae and finally enters through the foramen magnum, while supplying the brain and spinal cord (EINSTEN et. al., 2016). However, in approximately 5% of cases, the left vertebral artery originates from the arch of the aorta, often between the left common carotid and subclavian arteries (RYAN; BORDONI, 2023). Analogous to this, there is evidence of other variations in the origin of the vertebral artery in which the descending part of the aorta originated (PANDEY et. al., 2020). It is clear that understanding the abnormalities that the vertebral artery may present is essential when it becomes necessary to perform surgical procedures such as angiography, either to diagnose or to intervene.The present case report aims to describe an anatomical variation of the left vertebral artery, which originated from the arch of the aorta, between the left common carotid and subclavian arteries. During the dissection process of the aortic arch of a male cadaver belonging to the Human Anatomy laboratory of the State University of Amazonas, the emission of the left vertebral artery between the left common carotid artery and the left subclavian artery was noted. The vertebral arteries generally develop between 33 and 55 days during intrauterine life, and are normally constituted by the longitudinal anastomoses that connect the seven cervical intersegmental arteries. In addition to developmental failures, deletion of chromosome 22q11 has been reported to be associated with such aortic arch anomalies (MOMMA et al., 1999). The branching pattern observed in the aortic arch is a direct origin from the left vertebral artery between the left common carotid and left subclavian arteries, which is classified as ''Adachi TYPE C″ variation. This variant, which is the second most common variant pattern, has been reported numerous times, generally with a prevalence of 0.79%-8% (CELIKYAY et al., 2013). Abnormalities at the origin of the vertebral artery are generally asymptomatic and are generally only noticed in anatomical examinations after death. Furthermore, aortic arch anomalies play an important role in carotid stenting. According to the study by Faggioli et al., the neurological risk and technical failure rate in carotid stent procedures increase due to aortic arch anomalies (FAGGIOLI et al., 2007). The direct origin of the vertebral artery from the aortic arch can cause changes in hemodynamics, resulting in an unbalanced blood supply to the circle of Willis and creating a risk factor for cerebrovascular diseases.
