Peer-reviewed veterinary case report
Accessory mitral valve tissue causing heart blockage in a dog
By Kim, Soyeon et al.·Published in Journal of veterinary science·2021·Department of Veterinary Medical Imaging, South Korea·View original on PubMed →
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Original publication title: Echocardiographic features of accessory mitral valve tissue presenting left ventricular outflow tract obstruction in a dog.
- Species:
- dog
Plain-English summary
A 3-year-old Samoyed was found to have a bulging aorta during a routine check-up, which led to further testing. An ultrasound of the heart revealed a blockage in the left ventricular outflow tract, caused by an unusual piece of tissue resembling a mitral valve. This condition, known as accessory mitral valve tissue, was identified as the cause of the obstruction. While the dog was diagnosed with this rare heart issue, the study highlights the importance of recognizing this condition in dogs.
People also search for: dog heart problems · Samoyed heart obstruction · accessory mitral valve tissue in dogs
Abstract
In a 3-year-old Samoyed, aortic bulging was found on radiography during a general check-up. On echocardiography, turbulent flow was found in left ventricular outflow tract (LVOT) with high velocity (6.1 m/s). A linear structure was attached to the interventricular septum and connected to the chordae tendineae reaching the papillary muscle. A part of the structure moved during cardiac cycle, similar to mitral motion. This dog was diagnosed with LVOT obstruction caused by accessory mitral valve tissue (AMVT). This is the first report of AMVT in veterinary medicine. AMVT should be considered as a possible cause of LVOT obstruction in dogs.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/34313042/