Valve disease (which is different from cardiomyopathy) is seen in older Deerhounds, as well as many other purebred and mixed-breed dogs. It turns out that a drug we already use for cardiomyopathy also works well on dogs with valve disease.

Here’s the link:

http://veterinarymedicine.dvm360.com/canine-myxomatous-mitral-valve-heart-disease-when-medicate