M-Mode Echocardiographic Measurements In Healthy Labrador Dogs

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dc.contributor.advisorVelhankar, R. D.
dc.contributor.authorHatzade, R. I.
dc.date.accessioned2017-10-16T05:34:21Z
dc.date.available2017-10-16T05:34:21Z
dc.date.issued2011
dc.description.abstract“M-MODE ECHOCARDIOGRAPHIC MEASUREMENTS IN HEALTHY LABRADOR DOGS” The aim of this study was to establish normal reference M-mode echocardiographic values for Labrador breed of dog under Indian conditions. Mean, standard deviation and standard error were calculated for each parameter. Correlation coefficient was calculated to determine the potential dependence of intracardiac parameters on body weight and body surface area. Males and females were considered separately. Each parameter was analysed statistically to check effect of gender on M-mode echocardiographic parameters. M-mode echocardiography was performed on17 healthy Labrador dogs (10 males and 7 females) and measurements were made from right parasternal long axis four chamber view at the level of left ventricle (below mitral valve leaflet) and mitral valve as well as right parasternal short axis view at the level of aorta. All the diagnostic examinations including M-mode echocardiography in these 17 dogs were performed without use of any sedation or anaesthesia. The following parameters were measured on the echocardiographic images: Right ventricular diameter in diastole (RVDD), Interventricular septum in diastole (IVSD), Interventricular septum in systole (IVSS), Left ventricular diameter in diastole (LVDD), Left ventricular diameter in systole (LVDS), Posterior wall in diastole (PWD), Posterior wall in systole (PWS), Ejection fraction (EF), Fractional shortening (FS), Shortening percentage (S%), Posterior wall percentage (PW%), Left atrium (LA), Aorta (Ao), Left atrium to Aorta ratio (LA/Ao), Left ventricular mass (LVM) and E point to septal separation (EPSS). The effect of gender on each echocardiographic parameter was analyzed and the relationship of body weight (BW) and body surface area (BSA) with each parameter were also investigated. There was no significant difference (p ≥ 0.05) found between males and females with respect to the values of all these parameters mentioned above. Parameters viz. RVDD, IVSD, IVSS, PWD and LVM correlated positively (+ve) whereas S%, PW%, EPSS correlated negatively (-ve) with body weight and body surface area both in males and females. LVDD, LVDS, PWS, EF, FS correlated negatively (–ve) in males and positively (+ve) in females with body weight and body surface area. LA, AO, and LA:AO ratio had positive (+ve) correlation in males while negative (–ve) correlation in females with body weight and body surface area Along with all the parameters mentioned above left ventricular systolic time intervals viz. pre ejection period (PEP), left ventricular ejection time (LVET), Q to aortic valve closure (QAVC) and PEP/LVET ratio were also determined and correlated with the body weight and body surface area. The effect of gender on left ventricular systolic time intervals was also determined. Parameters viz. LVET, QAVC had positive (+ve) correlation with body weight and body surface area both in males and females whereas PEP, PEP/LVET ratio had positive (+ve) correlation in males and negative (–ve) correlation in females with body weight and body surface area. The values of these parameters did not differ significantly (p ≥ 0.05) between males and females. In conclusion, the results of this study confirmed that breed-specific reference values are mandatory for interpretation and accurate diagnosis of cardiac ailments using echocardiography. The results of this study can be used as ‘reference values’ in order to avoid over interpretation of cardiac dilatation, hypertrophy and/or diminished cardiac contractility Labrador dogs.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810033108
dc.keywordsM-Mode, Echocardiographic, Measurements,n Healthy, Labrador, Dogsen_US
dc.language.isoenen_US
dc.pages135en_US
dc.publisherMAFSU, Nagpur.en_US
dc.subVeterinary Medicineen_US
dc.subjectnullen_US
dc.themeM-Mode Echocardiographic Measurements In Healthy Labrador Dogsen_US
dc.these.typeM.V.Sc.en_US
dc.titleM-Mode Echocardiographic Measurements In Healthy Labrador Dogsen_US
dc.typeThesisen_US
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