Biometria de pontes de miocárdio em muares (Equus caballus x Equus asinus – Linnaeus 1758)

Ribeiro, André Luiz C.; Severino, Renato Souto; Guerra, Ricardo Romão; Favaron, Phelipe Oliveira; Junior, Horácio L. P. Tommasi; Ricci, Raquel; Franciolli, André Luís Rezende; Facciotti, Patricia Reginato; Bombonato, Pedro Primo

doi:10.5007/2175-7925.2009v22n3p177

Cited by 5 publications

(7 citation statements)

References 7 publications

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“…Em relação à vasculotopia das pontes de miocárdio nas demais espécies domésticas estudadas (Bombonato et al, 1994;Severino & Bombonato, 1992) mencionam que, nos bovinos, elas se alojam num maior percentual sobre o ramo interventricular paraconal (45,3%) e, nos suínos sem raça definida, sobre o ramo interventricular subsinuoso (25%). Nos corações de muares (Ribeiro et al, 2009), se mostrou com maior prevalência sobre o ramo proximal ventricular direito (23,4%). Isto nos indica que, dentre os animais domésticos, a artéria coronária esquerda é a maior detentora de pontes de miocárdio, mais precisamente sobre o ramo interventricular paraconal, assim como foi percebido em nossa pesquisa, em relação aos cães (Figura 3).…”

Section: Resultsunclassified

“…Referente à posição que as pontes ocupam nas regiões cardíacas, dos diferentes animais domésticos, averiguamos que, nos bovinos (Bos indicus) - (Severino & Bombonato, 1992) e nos suínos sem raça definida (Bombonato et al, 1994), elas se posicionam mais frequentemente na porção média basal: 50,9% e 37,5%, respectivamente. Segundo Ribeiro et al (2009), nos muares as mesmas se fizeram notar com maior prevalência na porção média apical (37,5%) dos corações de muares. Já no nosso trabalho, a maior frequência foi observada na porção média, com 7 ocorrências, 5 na porção ventral, 3 na porção dorso-medial e 1 na porção dorsal (Figura 3).…”

Section: Resultsunclassified

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Estudio morfológico de puentes miocárdicos en perros

Santos¹,

Godinho²,

Almeida³

et al. 2022

Pubvet

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A presença de Pontes de Miocárdio (PM) ocorre quando um feixe de músculo cardíaco se sobrepõe ao segmento da artéria coronária epicárdica. Embora a PM seja clinicamente silenciosa em cães, em humanos ela pode ser associada com infartos, isquemia, arritmias e morte súbita. Nesse sentido, foram avaliados 21 corações, e identificada a presença de PM em 61,90% das vísceras. Essa proposta visa verificar a ocorrência das PM, bem como sua topografia, morfologia e sua relação com as alterações cardíacas de maior ocorrência na clínica veterinária.

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Section: Resultsunclassified

Estudio morfológico de puentes miocárdicos en perros

Santos¹,

Godinho²,

Almeida³

et al. 2022

Pubvet

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“…Myocardial bridges have been reported in several species besides human (SANTOS et al, 2021), such as ruminants (CORREIA-OLIVEIRA, 2013, 2014GULMEZ;SAH, 2021), pigs (BOMBONATO et al, 1994), mules (RIBEIRO et al, 2009), monkeys Cercopithecus aethiops sabeus (NIKOLIĆ et al, 2009), among others.…”

Section: Discussionmentioning

confidence: 99%

Myocardial bridges and coronary distribution in dairy cattle from Brazil Northeast

Brito¹,

Lima²,

Ramalho³

et al. 2021

Rev Agr Acad

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This study evaluated the distribution and possible variations of the coronary arteries and the presence of myocardial bridges in dairy cattle from Northeastern Brazil. Thus, healthy hearts were analyzed according to many variables. Left coronary artery originate the rami paraconalis, circumflexus et subsinuosus. Ramus subsinuosus and right coronary artery showed a short subepicardial path. Lengths of the main branches showed statistical differences only in relation to age group and weight of the animal. Myocardial bridges had a prevalence of 55% and were more frequent over the ramus paraconalis. Veterinary medicine is able to provide experimental models to expand the necessary study to understand pathophysiology and clinical relevance of the bridges.

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“…Data on the length of myocardial bridges are still scarce in mammals. In human hearts the average length of myocardial bridges was 3.1 cm (LOUKAS et al, 2006), in wild boars 1.47 cm (NOCETTI et al, 2002), in mules 0.96 cm (RIBEIRO et al, 2009), in dogs 0.60 cm (FARIAS; SOUSA; GOMES, 2016), in Ideal sheep 2.28 cm (CRUZ et al, 2007), while in M. gouazoubira ranged from 1.3 to 2.7 cm.…”

Section: Discussionmentioning

confidence: 99%

Angioarchitecture of the coronary arteries in Mazama gouazoubira (G. Fischer, 1814)

Zaniboni

Souza

Samora

et al. 2021

AVB

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Mazama gouazoubira is a widely distributed deer in the South American continent. However, studies on its anatomical characteristics are still scarce. The objective of this study was to elucidate the coronary circulation of M. gouazoubira. With this aim, after collecting cadavers on highways, twenty-four hearts injected with latex and preserved in formaldehyde at 10% were dissected. The dissections revealed that all specimens presented left coronary dominance, characterized by the origin of the subsinuous interventricular branch from the circumflex branch of the left coronary artery. The number of ventricular branches originated from branches of the left coronary artery was approximately five times higher than that of the right coronary artery. The occurrence of myocardial bridges was registered in 91.7% of the individuals, with bridges predominating over the paraconal interventricular branch. The mean length of the paraconal interventricular sulcus was significantly higher in males (p = 0.02). The number of atrial branches and ventricular branches, length of myocardial bridges and length of subsinuous interventricular sulcus did not vary significantly between sex. Left coronary dominance and high frequency of myocardial bridges in M. gouazoubira are preponderant anatomical traits also present in different species of Ruminantia suborder. Coronary dominance studies in other South American deer species may confirm the correlation of this trait with the evolutionary history of these animals.

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Biometria de pontes de miocárdio em muares (Equus caballus x Equus asinus – Linnaeus 1758)

Abstract: Biometria de pontes de miocárdio em muares

Cited by 5 publications

References 7 publications

Estudio morfológico de puentes miocárdicos en perros

Estudio morfológico de puentes miocárdicos en perros

Myocardial bridges and coronary distribution in dairy cattle from Brazil Northeast

Angioarchitecture of the coronary arteries in Mazama gouazoubira (G. Fischer, 1814)

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