anatomia dos ramos lateral, diagonal e ântero-superior no ventrículo esquerdo do coração humano anatomy of the lateral, diagonal and anterosuperior arterial branches of the left ventricle of the human heart
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2005
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Abstract
OBJETIVO: O objetivo deste trabalho é a descrição dos ramos lateral, diagonal e ântero-superior, no tecido adiposo epicárdico do ventrículo esquerdo, e a análise da freqüência e do diâmetro destes, conforme o tipo de circulação coronariana. O conhecimento preciso desses ramos tem aplicabilidade na abordagem cirúrgica para a sua revascularização ou durante a injeção de substâncias cardioplégicas nos mesmos. MÉTODO: Dissecados 50 corações obtidos de necropsias de adultos, fixados em solução de formol e o ventrículo esquerdo dividido em três terços: superior, médio e inferior. O ramo lateral originou-se do ramo circunflexo; o ramo diagonal, do ponto de divisão da artéria coronária esquerda e o ramo ântero-superior, do ramo interventricular anterior no terço superior do ventrículo esquerdo. Para cada ramo foram medidos o comprimento no epicárdio e o diâmetro, além disso foi relacionado o fluxo sangüíneo com o tipo de circulação coronariana. RESULTADOS: O diâmetro do ramo lateral, presente em 88% dos casos, variou de 0,6 a 4,5 mm (média 2,1 ± 0,7mm). O diâmetro do ramo diagonal, presente em 50% dos casos, variou de 1,0 a 3,8 mm (média 2,2 ± 0,7 mm). O diâmetro do ramo ântero-superior, presente em 84% dos casos, variou de 1,0 a 4,1 mm (média 2,5 ± 0,8 mm). Foram encontrados: 30/50 (60%) casos de dominância da artéria coronária direita, 14/50 (28%) casos de tipo balanceado e 6/12 (12%) casos de dominância da artéria coronária esquerda. A média do fluxo sangüíneo do ramo ântero-superior apresentou valor decrescente nos tipos: dominância da artéria coronária direita, balanceado e dominância da artéria coronária esquerda. Inversamente, o ramo lateral mostrou valor crescente, enquanto o ramo diagonal apresentou maior fluxo no tipo balanceado. CONCLUSÃO: Os resultados demonstraram a complementaridade entre os ramos lateral, diagonal e ântero-superior, bem como a correlação entre a distribuição dos mesmos e os tipos de circulação coronariana.
OBJECTIVE: The objective of the present report was to describe the lateral, diagonal and anterosuperior arterial branches in the epicardial adipose tissue of the left ventricle and to analyze their frequency and diameters according to the type of coronary circulation. The precious knowledge of these branches has surgical application in their revascularization or during the injection of the cardioplegic substances into these branches. METHOD: Fifty hearts obtained at autopsy from adult cadavers were dissected and fixed in formalin and the left ventricle was divided into three thirds: superior, middle and inferior. The lateral branch originated from the circumflex branch, the diagonal branch from the division of the left coronary artery and the anterosuperior branch from the anterior interventricular branch in the superior third of the left ventricle. The length in the epicardium and the diameter of each branch were measured and the blood flow was correlated to the type of coronary circulation. RESULTS: The diameter of the lateral branch, present in 88% of the cases, ranged from 0.6 to 4.5 mm (mean: 2.1 ± 0.7 mm). The diameter of the diagonal branch, present in 50% of cases, ranged from 1.0 to 3.8 mm (mean: 2.2 ± 0.7 mm). The diameter of the anterosuperior branch, present in 84% of cases, ranged from 1.0 to 4.1 mm (mean: 2.5 ± 0.8 mm). We detected 30/50 (60%) cases of dominance of the right coronary artery, 14/50 (28%) cases of the balanced type, and 6/12 (12%) cases of dominance of the left coronary artery. Mean blood flow in the anterosuperior branch presented a decreasing value in the following order: dominance of the right coronary artery, balanced and dominance of the left coronary artery. Inversely, the lateral branch presented with increasing values, while the diagonal branch presented a greater flow in the balanced type. CONCLUSION: The results demonstrated the complementarity of the lateral, diagonal and anterosuperior arterial branches, as well as the correlation among these branches with the different types of coronary circulation: right dominance, balanced and left dominance.
OBJECTIVE: The objective of the present report was to describe the lateral, diagonal and anterosuperior arterial branches in the epicardial adipose tissue of the left ventricle and to analyze their frequency and diameters according to the type of coronary circulation. The precious knowledge of these branches has surgical application in their revascularization or during the injection of the cardioplegic substances into these branches. METHOD: Fifty hearts obtained at autopsy from adult cadavers were dissected and fixed in formalin and the left ventricle was divided into three thirds: superior, middle and inferior. The lateral branch originated from the circumflex branch, the diagonal branch from the division of the left coronary artery and the anterosuperior branch from the anterior interventricular branch in the superior third of the left ventricle. The length in the epicardium and the diameter of each branch were measured and the blood flow was correlated to the type of coronary circulation. RESULTS: The diameter of the lateral branch, present in 88% of the cases, ranged from 0.6 to 4.5 mm (mean: 2.1 ± 0.7 mm). The diameter of the diagonal branch, present in 50% of cases, ranged from 1.0 to 3.8 mm (mean: 2.2 ± 0.7 mm). The diameter of the anterosuperior branch, present in 84% of cases, ranged from 1.0 to 4.1 mm (mean: 2.5 ± 0.8 mm). We detected 30/50 (60%) cases of dominance of the right coronary artery, 14/50 (28%) cases of the balanced type, and 6/12 (12%) cases of dominance of the left coronary artery. Mean blood flow in the anterosuperior branch presented a decreasing value in the following order: dominance of the right coronary artery, balanced and dominance of the left coronary artery. Inversely, the lateral branch presented with increasing values, while the diagonal branch presented a greater flow in the balanced type. CONCLUSION: The results demonstrated the complementarity of the lateral, diagonal and anterosuperior arterial branches, as well as the correlation among these branches with the different types of coronary circulation: right dominance, balanced and left dominance.
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ortale2005braziliananatomia
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| Authors | ;José Roberto Ortale;José Meciano Filho;Ana Maria Ferreira Paccola;Júlia Guedes Pereira Garcia Leal;Carolina Alves Scaranari |
| Journal | 2017 international conference on information technology systems and innovation, icitsi 2017 - proceedings |
| Year | 2005 |
| DOI |
10.1590/S0102-76382005000200010
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