Likewise if there is backward movement of blood due to leaky heart valves then the heart has to work harder. (pethealthnetwork.com)
For example, dogs with heart disease typically have heart failure from leaky heart valves, while cats with heart disease commonly have abnormalities of their heart muscles, not their valves. (amcny.org)
You might not think vaccines play a role in heart disease, but common conditions like mitral valve insufficiency (known as leaky heart valve) or dilated cardiomyopathy can be caused by rabies vaccination. (dogsnaturallymagazine.com)