Effect of age and body weight on transmitral and transaortic pressure gradient in different age groups of healthy Spitz and Labrador retriever dogs

Thirty four healthy dogs of Spitz and Labrador retriever divided in three age groups were subjected to Spectral Doppler echocardiography. Transmitral and transaortic pressure gradient were estimated through Doppler derived valvular velocity. Mean±S.D values of pressure gradients in all the groups in two breeds were statistically compared and correlated with age and body weight. No significant difference was found between the groups and breed. In linear regression line very weak correlation was noticed between pressure gradient with age and body weight. There was non significant effect of age and body weight over transvalvular pressure gradient.