Can a Heart Murmur Kill a Dog?

A large majority of heart murmur in dogs are leaky mitral valves and can be monitored for several years before they require attention. However, these types of murmurs in certain breeds can quickly lead to the dog developing heart failure.

How long can a dog live with a heart murmur?

Heart failure and heart disease can also be caused by heartworm disease, so making sure your dog is on a good heartworm prevention is crucial. Many dogs live a long time after being diagnosed with a heart murmur, and some can even live years after being diagnosed with heart failure.

How does a heart murmur affect a dog?

In addition, because the heart is not pumping effectively, these dogs can develop profound weakness, lethargy, exercise intolerance and fainting. Unfortunately, they can also pass away suddenly from abnormal heart beats (arrhythmias) from the diseased heart chambers.

Marcus Vance

Marcus Vance

Cybersecurity & Digital Privacy Researcher

Marcus Vance is a cybersecurity auditor and technology writer dedicated to educating the public about online safety, data privacy regulations, enterprise security, and emerging cyber threats.