Journal of Veterinary Science

The Korean Society of Veterinary Science (대한수의학회)
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Echocardiographic features of accessory mitral valve tissue presenting left ventricular outflow tract obstruction in a dog

  • Kim, Soyeon (Department of Veterinary Medical Imaging, College of Veterinary Medicine, Chonnam National University) ;
  • Lee, Sang-Kwon (Department of Veterinary Medical Imaging, College of Veterinary Medicine, Chonnam National University) ;
  • Choi, Jihye (Department of Veterinary Medical Imaging, College of Veterinary Medicine, Chonnam National University)
  • Received : 2021.02.24
  • Accepted : 2021.06.29
  • Published : 2021.07.31
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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.

Keywords

Acknowledgement

This study was supported by the Animal Medical Institute of Chonnam National University and the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science, ICT, and Future Planning (NRF-2021R1A2C200573011).

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