Congenital mitral valve stenosis in a Chinchilla cat

  • Lu, Ta-Li (Cardiospecial Veterinary Hospital) ;
  • Hung, Yong-Wei (Cardiospecial Veterinary Hospital) ;
  • Choi, Ran (Section of Small Animal Internal Medicine, College of Veterinary Medicine, Kangwon National University) ;
  • Hyun, Changbaig (Section of Small Animal Internal Medicine, College of Veterinary Medicine, Kangwon National University)
  • Received : 2016.04.13
  • Accepted : 2016.07.06
  • Published : 2016.09.30


A one-year-old, 3.25 kg intact male Chinchilla cat presented with acute right hind limb paralysis. Diagnostic imaging studies found cardiomegaly with interstitial lung pattern, abnormal mitral valve leaflets without maximum opening at the end of the ventricular diastole and during atrial systole and severe mitral inflow obstruction. Based on these findings and its young age, the case was diagnosed as congenital mitral valve stenosis. Treatment was directed to stabilize clinical conditions related to heart failure, to prevent further formation of thrombus and to relieve pain associated with thromboembolism. After one month of therapy, hind limb motor function was fully recovered.


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