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). Arq Bras Cardiol. Dec;91(6):e Anatomy of a dextrocardia case with situs solitus. Faig-Leite FS(1), Faig-Leite H. Author information: (1)Universidade. Herz. May;35(3) doi: /s Epub May Isolated dextrocardia with situs solitus (dextroversion). Solzbach U(1).

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Relato de caso-Anatomia de um caso de Dextrocardia com Situs Solitus. Study Association This study is not associated with any graduation program. A population-based study of cardiac malformations and outcomes associated with dextrocardia.

Learn more about Birth Defects. With the help of a stereoscopic magnifying glass, all afferent and efferent branches of the vessels of the base of the heart were dissected in order to look for anomalies. In these cases, as well as in the present case, situs solitus was found, the great vessels were normally related with the bulboventricular loop to the right and the absence of ventricular inversion was observed.

The dextrocardia is a cardiac anomaly characterized by the displacement of the biggest axis base-apex of the heart to the right side of the thorax with a reversion of the apical inclination, this occurs due to an anomalous rotation of the primitive tube of the heart to the right, being a rare anomaly in human beings, and not described in animals.

Isolated reversal of the heart with normally-patterned viscera otherwise is termed dextrocardia. Soltius, this species is distributed to the east of the Andes, in Venezuela, until the north of Argentina. The study by Van Praagh et al 6 is the only one istus describes two cases that were identical to the case reported here, with more anatomic details. Sources of Funding There were no external funding sources for this study. All the contents of this journal, except where dextfocardia noted, is licensed under a Creative Commons Attribution License.

Both cases, as in the present one, constituted necropsies of children younger than one year with a type of dextrocardia classified by the authors as dextrocardia with normally related great vessels.

This condition was not found in the studied animal because there is no communication between the pulmonary artery and the aorta.


Situs solitus – Wikipedia

The aorta was dorsally located to the cava caudal vein, the pulmonary artery was cranial and dorsal to the aorta, the pulmonary veins in number ofthree were ventral to the pulmonary artery, the cava caudal vein placed in the ventral plane and the cava cranial vein in the dorsal plane, both in relation to the other vessels Figure 1 C and 2 A and B. This induced asymmetry is thought to be achieved by a number of morphological factors that guide development.

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. Although much of humans’ external anatomy is bilaterally symmetricmany internal structures must be signaled to develop asymmetrically in order to form the normal situs solitus orientation.

Isolated dextrocardia with situs solitus (dextroversion).

During the inspection of the pulmonary trunk, a large ductus arteriosus Botallo’s ductus was found Figure 2. The lesser anteater Tamandua tetradactila is a Xenartra from the Myrmecophagidae family.

Variants on the normal picture are relatively uncommon. The inspection of the heart and the vessels of the base of the heart did not disclose possible position alterations caused by the removal of the lungs. Dextrocardia with sinus solitus. In the present study, it is noteworthy the fact that a complete specular image of the heart and the vessels of the base of the heart was not found.

Can Med Assoc J. This condition does not normally pose health problems, however some may suffer from additional congenital heart abnormalities. Its habits are predominantly nocturnal and the feeding basis for these animals is insects, mainly ants and termites Reis et al. The literature presents a great diversity of types and classifications for dextrocardia cases. The right atrium was more developed then the left and the pulmonary veins arrived directly in the left ventricle.

A case of dextrocardia with normal situs. The heart apex was positioned along the heart axis and was turned to the right side, thus demonstrating the dextrocardia. We present a rare case of dextrocardia in the corpse of a female child, aged approximately one year old, presenting situs solitus.


In humans, dextrocardia cases with situs inversus totalisalso seen with situs inversus Perloff,in the heart and in other organs, are presented as a mirror image of the normal disposition.

In dextrocardia with situs solitus, a congenital condition, the heart is on the right side of the chest, but all of the other internal organs are in their normal positions. Differing from the normal animals, the vessels on the base of the heart of the animal with dextrocardia situs solitus and apex-basis inversion axis presented alterations. Unsourced material may be challenged and removed. By using this site, you agree to the Terms of Use and Privacy Policy.

From Wikipedia, the free encyclopedia. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. The cava veins, superior and inferior, are on the right atrium that is located to the left of the vertebral column, while the aorta is below on the right.

There was no atrioventricular discordance or other intra and extracardiac malformations, which are commonly seen in cases of dextrocardia. The main vases of the base were identified with some topographic alterations resulting in: Its treatment by coronary angioplasty by the brachial approach. Through simple anatomical observation, it can be determined that there was no change in the heart position after the silitus underwent fixation.

After that the animals had been radiographed and dissected, the aortic arch was removed after the sternum.

Manuscript received January 11, ; revised manuscript received February 24, ; accepted March 10, Services on Demand Journal. Meanwhile, the right ventricle, which normally pumps blood to the lungs, must pump blood to the rest of the body. This diversity seems to be caused by the difficulty to establish criteria for a perfect classification Introduction Dextrocardia is an embryologic malformation characterized by the displacement of the largest axis base to apex of the heart to the right side of the chest, with reversion of the apical inclination.