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      Ramificação e distribuição do tronco pulmonar em relação aos brônquios, em fetos de bovinos azebuados Translated title: Ramification and distribuition of the pulmonary trunk in relation to the bronchus in crossbred zebu cattle

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          Abstract

          Mediante esta pesquisa, estudamos a ramificação e a distribuição das artérias pulmonares em 20 fetos de bovinos azebuados (13 machos e 7 fêmeas), com idades variando entre 6 e 9 meses. As peças foram fixadas em solução aquosa de formol a 10%, e o método de dissecação consistiu da abertura da cavidade torácica desses animais, com vistas à individualização dos vasos arteriais e brônquios. Da artéria pulmonar direita observou-se que, mais comumente, 15 vezes (75%), parte como primeiro colateral o ramo ascendente, seguido do ramo descendente que acompanham os dois brônquios segmentares do brônquio traqueal, os quais irrigam, respectivamente, a porção cranial e caudal do lobo cranial do pulmão. Logo após este arranjo, surgem o ramo lobar acessório e em seguida o ramo lobar médio. O ramo lobar acessório pode emergir duas vezes (10%) depois do ramo lobar médio ou na mesma altura dele, cinco vezes (25%). Uma única vez (5%) aparecem dois ramos lobares médios. Em cinco preparações (25%), os dois primeiros ramos da artéria pulmonar direita são vistos a nascer em tronco comum, o ramo lobar cranial. Da artéria pulmonar esquerda nascem mais freqüentemente 18 vezes (90%) como 1º e 2º colaterais os ramos ascendente e descendente, e respectivamente duas vezes (10%) estes ramos provêm de um único colateral, o ramo lobar cranial. Em cada lobo caudal (direito e esquerdo), penetra um ramo lobar caudal (direito e esquerdo) que emite número bastante variado de ramos arteriais (6 a 14) do lado direito e (7 a 16) do lado esquerdo.

          Translated abstract

          In this research we studied the ramification and distribution of pulmonary arteries. For this study we used 20 bovine zebu-like fetuses (13 male and 7 females), with ages varying from 06 to 09 months. The animals were fixed with formol 10% and the method of dissection consisted in the opening of the thoracic cavity and this allowed the individualization of arteries and bronchi. It was observed that usually, in 15 times (75%) the first collateral branch to leave the right pulmonary artery is the upward branch, followed by the downward branch, that join the two segmental bronchi from the tracheal bronchus, and respectively irrigates the cranial portion and the caudal lung lobe. Almost right after these structures the accessory lobar branch is followed by the middle lobar branch. The accessory lobar branch also appeared two times (10%) after the middle lobar branch, and 5 times (25%) at the same position of the middle lobar branch. Five preparations showed the first two branches of the right pulmonary artery emerging in form of a common branch, the cranial lobar branch. From the left pulmonary artery the first and second branches are 18 times (90%) the upward and downward branch. Two times (10%) these two branches came from a single collateral branch, the cranial lobar branch. A caudal lobar branch (right and left) enters each caudal lobe (right and left) and gives off a variable number of arterial branches (6 to 14) on the right side and (7 to 16) on the left side.

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          Most cited references 16

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          Pulmonary function in the horse during anaesthesia: a review.

           G Stegmann (1986)
          The effect of abnormal body position on cardiovascular and pulmonary function in the awake and anaesthetised horse is reviewed. Parameters such as pulmonary shunt, lung volumes, blood gases and alveolar-arterial oxygen partial pressure differences are discussed. Withholding food for 24 hours and mechanical ventilation may be used to improve blood gas values associated with abnormal recumbency during anaesthesia. During prolonged recovery, horses should be encouraged to adopt sternal recumbency.
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            Anatomia comparata dei mammiferi domestici.

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              Tratado de obstetrícia y ginecologia veterinária

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                Author and article information

                Contributors
                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
                1998
                : 35
                : 2
                : 00
                Affiliations
                [1 ] Universidade de São Paulo Brazil
                [2 ] Universidade Estadual Paulista Brazil
                [3 ] Universidade de São Paulo Brazil
                Article
                S1413-95961998000200001
                10.1590/S1413-95961998000200001
                Product
                Product Information: website
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE
                VETERINARY SCIENCES

                Animal agriculture, General veterinary medicine

                Pulmonary Artery, Bovine, Artéria Pulmonar, Bovinos

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