17 - Assessment of posterior interventricular artery dominance in the anatomy laboratory of the State of Amazonas

Poster Board Number: 17
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Odd poster #s – first hour
Even poster #s – second hour

Co-authors:

Sigrid Coelho - FAMETRO; Erika Schuck - UNL; Carlos Eduardo de Carvalho - Universidade do Estado do Amazonas; Flávia Alessandra Albuquerque - Universidade do Estado do Amazonas; Paola Giovanna Amazonas - 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; Heitor de Araújo - Universidade do Estado do Amazonas; Bárbara Letícia de Souza - Universidade do Estado do Amazonas; Maria Vitória Dias - Universidade do Estado do Amazonas; Samira dos Santos - Universidade do Estado do Amazonas; Wendrel 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; Andelson Laslo Frazão - Universidade do Estado do Amazonas; Edinaldo Junior - Universidade do Estado do Amazonas; Ana Beatriz Marins - Universidade do Estado do Amazonas; Matheus Moraes - Universidade do Estado do Amazonas; Maria do Socorro Nascimento - Universidade do Estado do Amazonas; Frank Oliveira - Universidade do Estado do Amazonas; Liany Ermínia Pechar - Universidade do Estado do Amazonas; Geovana Pontes - Universidade do Estado do Amazonas; Railana Regis - Universidade do Estado do Amazonas; Aron Reis - Universidade do Estado do Amazonas; Pedro Rodrigues - Universidade do Estado do Amazonas; Thamires Santos - Universidade do Estado do Amazonas; Sophia Taveira - Universidade do Estado do Amazonas; Maria Clara Vasques - Universidade do Estado do Amazonas

Abstract Body :The heart starts beating from the third week of intrauterine life and has arterial irrigation from the right (RCA) and left (LCA) coronary arteries, which are the first branches of the aorta (SAKINI, 2022). Coronary artery anomalies and variations are part of a diverse group of congenital diseases of the coronary artery anatomy with a significant variety of clinical manifestations. In this sense, coronary artery variants have a prevalence of at least 1% in the general population (KASTELLANOS et al., 2018).The present work aims to present an analysis of the coronary arterial vascular profile of 41 pieces of hearts in order to consider their anatomical characteristics, clinical and surgical implications regarding the dominance pattern.To perform the coronary dominance survey of the posterior descending artery, analyzes were carried out on 41 pieces of hearts belonging to the Human Anatomy laboratory of the School of Health Sciences of the State University of AmazonasHearts that did not have an anatomical reference to differentiate between right and left coronary arteries to identify the posterior interventricular branch were excluded from the research, totaling 2 pieces submitted to the plastination process and 20 preserved in formaldehyde solution. In the Amazon region where the hearts were analyzed, a high rate of hearts with Chagas disease was observed, corresponding to 85% of the sample.Dominance was determined based on its origin coming from the right (RCA) or left (LCA) coronary artery, as well as in cases of codominance, 18 cases of right-dominant PDA were recorded, 16 hearts preserved in 10% formaldehyde solution and 2 hearts plastinated, 2 of left dominance, all of which were formalized, and 2 of co-dominance, all of which were also formalized.The data obtained at the Human Anatomy Laboratory at the State University of Amazonas revealed that 81.8% of a total of 22 hearts were right dominant; 9.1% had left dominance and 9.1% co-dominance.According to estimates, 70 to 80% of the population has a dominant right heart, with the PDA originating from the right coronary artery (SHAHOUD et. al., 2022). According to studies by Puladi et. al. (2022), among 134 hearts analyzed, it was observed that the percentage of right dominance type was 73.1%, which exceeded left dominance, with 6.7% and codominance, with 20.1%.This knowledge not only enriches anatomical understanding, but also has significant practical implications, providing a solid foundation for improving therapeutic approaches and intervention strategies in complex cardiac contexts. This study thus contributes to the continuous improvement of medical practice by offering a comprehensive view of cardiac variations and their clinical ramifications, potentially benefiting patient management and the cardiovascular research.