Mitral Valve Disease (MVD) in Dogs
Mitral Valve Disease (MVD) is a high-severity cardiac condition that can affect dogs of all ages and breeds. MVD is the most common heart disease in dogs, characterised by progressive degeneration of the mitral valve leaflets causing regurgitation of blood back into the left atrium. It leads to cardiac enlargement and eventually congestive heart failure. It is documented across 5 breeds, though prevalence and severity can differ significantly between them. It typically becomes apparent at 5-10 years. Early signs to watch for include heart murmur detected on examination, coughing especially at night, exercise intolerance, and rapid breathing at rest. When treatment is required, costs are estimated at £1,500-£5,000/year depending on severity, location, and the specific intervention needed. Mitral Valve Disease (MVD) has a hereditary component, so health-screening certificates from the breeder are strongly recommended for predisposed breeds. This page covers symptoms, treatment options, and preventive steps — along with breed-specific information where available.
Signs & Symptoms
The following symptoms are commonly associated with Mitral Valve Disease (MVD) in dogs. If your dog displays several of these signs, consult your vet promptly — early diagnosis typically leads to better outcomes.
- Heart murmur detected on examination
- Coughing especially at night
- Exercise intolerance
- Rapid breathing at rest
- Fainting
Treatment Overview
The EPIC and PROTECT trials established that Pimobendan delays onset of heart failure in preclinical stages. Once failure develops, diuretics, ACE inhibitors, and Pimobendan are combined.
Typical onset: 5-10 years
Prevention & Screening
While not all cases of Mitral Valve Disease (MVD) can be prevented, the following steps reduce risk or enable earlier intervention:
- Follow Cavalier Health cardiac breeding protocol
- Annual auscultation by cardiologist
- Breed only from clear parents over recommended age
Estimated Treatment Cost
Treatment for Mitral Valve Disease (MVD) is estimated at £1,500-£5,000/year, depending on severity, the specific intervention required, and your location. Costs may be higher for surgical procedures or ongoing management. Comprehensive pet insurance covering hereditary conditions is strongly recommended.
Breeds Affected by Mitral Valve Disease (MVD)
The following 4 breeds are documented as being susceptible to Mitral Valve Disease (MVD). Click any breed to view breed-specific information about this condition, including prevalence and recommended screening.
Looking for more information? Browse all dog health conditions or explore the health guides for in-depth breed care advice.