Peer-reviewed veterinary case report
Atresia of the right atrioventricular orifice with complete transposition of the great arteries in a horse.
- Journal:
- Anatomia, histologia, embryologia
- Year:
- 1989
- Authors:
- Zamora, C S et al.
- Species:
- horse
Plain-English summary
A 6-week-old Arabian filly had a history of being unwell and having trouble with exercise. After she passed away, a thorough examination of her heart showed several serious problems. These included a blockage in the right atrioventricular opening (tricuspid atresia), holes between the heart chambers (atrial and ventricular septal defects), and a complete switch in the positions of the major blood vessels (complete transposition of the great arteries). There were also issues with how blood was draining in her heart and a narrowing of the aorta. Unfortunately, these heart defects were severe and contributed to her poor health.
Abstract
The heart of a 6-week old Arabian filly with a history of poor health and exercise intolerance revealed at postmortem examination, multiple cardiac malformations which included atresia of the right atrioventricular orifice (tricuspid atresia, with associated atrial and ventricular septal defects), complete transposition of the great arteries, anomalous drainage of the venae cavae and coronary sinus into the left atrium, coarctation of the aorta, and a small but patent ductus arteriosus. The course of blood through the heart was suggested and discussed.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/2757240/