JEYARAJA KAPARNA GANPATH PILLAITANUVASVAIRAMUTHU SRANJITHKUMAR M2024-01-102024-01-102021https://krishikosh.egranth.ac.in/handle/1/5810206122Conventional echocardiography which includes 2-D, M-mode and Spectral Doppler was effective in assessing systolic dysfunction whereas it fails to effectively diagnose and stage diastolic dysfunction because of the phenomenon of “pseudonormalisation”. In this context, Tissue Doppler Imaging along with conventional echocardiography may be useful in better diagnosis and staging of heart failure. Therefore, the present study was conceived with the objective to assess the systolic and diastolic dysfunction using pulsed Tissue Doppler Imaging in dogs with acquired heart disease and to compare the pulsed Tissue Doppler Imaging with conventional doppler in the detection of left ventricular dysfunction in dogs with acquired heart diseases. The study was carried out at Madras Veterinary College Teaching Veterinary Hospital, Chennai over a period of two semesters between 2019 – 2021. The study comprised of 36 healthy dogs, 28 dogs with dilated cardiomyopathy and 17 dogs with mitral valve disease. In dilated cardiomyopathy, common clinical signs recorded were lethargy, inappetence, ascites and exercise intolerance whereas in dogs affected with mitral valve disease, common clinical signs recorded were cough, inappetence, lethargy and abdominal distension. On physical examination gallop rhythm and murmur were the common findings in DCM and systolic murmur in MVD.EnglishThesis