mitral valve disease dogs life expectancy
Myxomatous mitral valve disease (MMVD) is the most common congenital heart disease in dogs accounting for more than 70% of all canine heart disease. The disease is chronic and progressive with initial signs, usually a heart murmur, developing after the age of six.bstract. Myxomatous mitral valve disease (MMVD) is the most commonly diagnosed cardiovascular disease in the dog accounting for more than 70% of all cardiovascular disease in dogs. As are most canine diseases with genetic underpinnings, risk of MMVD is greatly increased in a subset of breeds.