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Arquivo Brasileiro de Medicina Veterinária e Zootecnia

Print version ISSN 0102-0935


PINHEIRO, V.L.C.; PEREIRA, L.C.; LIMA, A.R.  and  BRANCO, E.. Dextrocardia with situs solitus and inversion apex-basis axis in lesser anteater (Tamandua tetradactyla): case report. Arq. Bras. Med. Vet. Zootec. [online]. 2014, vol.66, n.1, pp.116-120. ISSN 0102-0935.

Dextrocardia is a rare cardiac anomaly where the heart is situated on the right antimeres of the thorax. This study had the objective of describing a case of dextrocardia with situs solitus and apex-basis axis inversion in a lesser anteater (Tamandua tetradactyla) between five evaluated animals, all from the area of Mine Bauxite - Paragominas - Para. The arterial system was filled with contrasted latex and the animals were fixed with 10% formaldehyde and a posterior dissection was done. The heart of an animal was found in right antimere with inversion of the base-apex axis. The right atrium was more developed then the left and the pulmonary veins arrived directly in the left ventricle. The main vases of the base were identified with some topographic alterations resulting in: aorta dorsal to the cava caudal vein, pulmonary artery dorsal and cranial to aorta, pulmonary veins ventral to the pulmonary artery, cava caudal vein in ventral plain and cava cranial vein in dorsal plan in relation to the other vessels. Internally there were four cardiac chambers, with absence of septal communication.

Keywords : dextrocardia; apex-basis axis inversion; lesser anteater.

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