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      Aspectos da irrigação do nó atrioventricular e tronco do fascículo atrioventricular em bovinos mestiços Girolando Translated title: Aspects of the irrigation of the atriumventricular node and trunk of the atriumventricular fascicle in Girolando crossbred bovines

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          Abstract

          Estudaram-se aspectos da irrigação do nó atrioventricular e tronco do fascículo atrioventricular, componentes do sistema de condução do coração. Para tanto, utilizaram-se trinta corações de bovinos fêmeas, mestiças Girolando, com idade entre 36 e 48 meses. Os mesmos foram dissecados, após prévia injeção das artérias coronárias direita e esquerda, com solução corada de Neoprene látex 450, seguida pela fixação dos corações em solução aquosa de formol a 15,00%, pelo método de imersão. O nó atrioventricular foi irrigado, isoladamente ou em associação, pelo primeiro ramo septal do ramo interventricular paraconal (3,33%), ramo distal do átrio esquerdo (6,66%), ramo septal da artéria coronária direita (46,66%), ramo proximal do átrio direito (76,66%) e ramo ventricular direito (76,66%). O tronco do fascículo atrioventricular foi irrigado, isoladamente ou em associação, pelo primeiro ramo septal do ramo interventricular paraconal (3,33%), ramo ventricular direito (60,00%), ramo proximal do átrio direito (60,00%), e com maior freqüência pelo ramo septal da artéria coronária direita (70,00%). As anastomoses arteriais estiveram presentes em 76,66% dos casos e geralmente formaram circuitos junto às margens do sistema de condução cardíaco.

          Translated abstract

          Aspects of blood supply of the atriumventricular node and trunk of the atriumventricular fascicle, components of the cardiac conducting system were studied. Thirty female hearts of Girolando crossbred bovines, with ages varying between 36 and 48 month-old were utilized. They were dissecated, intervening previous injection of the right and left coronary arteries with coloured solution of Neoprene latex 450, and posterior fixation in aqueous solution of 15.00% formaldehyde, by immersion. The atriumventicular node was irrigated, isolatedly or in association, by the first septal branch of interventricular paraconal branch (3.33%), distal branch of the left atrium (6.66%), septal branch of the right coronary artery (46.66%), proximal branch of the right atrium (76.66%) and by the right ventricular branch. (76.66%). The trunk of atriumventricular fascicle was irrigated, isolatedly or in association, by the first septal branch of interventricular paraconal branch (3.33%), right ventricular branch (60.00%), proximal branch of the right atrium (60.00%) and more often by the septal branch of the right coronary artery (70.00%). Arterial anastomoses were present in 76.66% of the sample, and commonly they formed circuits around the margins of the cardiac conducting system.

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          Most cited references 19

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          Nomina anatômica veterinária

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            Tratado de medicina cardiovascular

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              Anatomische Studien über die Coronararterien und experimentelle Untersuchungen über ihre Durchgängigkeit

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                bjvras
                Brazilian Journal of Veterinary Research and Animal Science
                Braz. J. Vet. Res. Anim. Sci.
                Faculdade de Medicina Veterinária e Zootecnia / Universidade de São Paulo (São Paulo )
                1678-4456
                2003
                : 40
                : 5
                : 314-320
                Affiliations
                [1 ] União Pioneira de Integração Social
                [2 ] Universidade Federal de Uberlândia Brazil
                Article
                S1413-95962003000500001
                10.1590/S1413-95962003000500001
                Product
                Product Information: website
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE
                VETERINARY SCIENCES

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