Learning that your dog or cat has a heart murmur can be frightening for any pet owner. However, understanding exactly what causes a heart murmur will help you understand the next steps to take for your pet.
If your pet is diagnosed with a heart murmur, there is no reason to panic. Some soft heart murmurs are benign or harmless and may go away on their own, particularly in puppies and kittens. The only way to know the extent of your pet’s condition is to work with your veterinarian and/or a Veterinary Cardiologist (a specialist) to determine the cause of the murmur and the potential severity of the heart disease. Additional diagnostic testing may be required.
Some of the common causes of heart murmurs in dogs and cats include:
Not all dogs and cats diagnosed with a heart murmur have symptoms; however, not all dogs and cats that suffer from heart disease have a heart murmur. Therefore, your primary care veterinarian and/or Veterinary Cardiologist will use your pet’s physical exam findings and history to decide when and which additional tests or treatments are required.
Signs of cardiac disease in dogs and cats can include:
If you pet exhibits one or more of the above symptoms, please contact your primary care veterinarian or cardiologist as soon as possible as these signs could indicate an emergency
If your primary care veterinarian hears a heart murmur in your dog or cat, they may refer you to a board-certified cardiologist to have an echocardiogram (ultrasound of the heart) performed. This test is the gold standard for definitive diagnosis of the cause of a heart murmur. The results of the echocardiogram will help the cardiologist determine what medications may be required to treat your pet.
Treatment is designed to relieve the issues associated with heart disease related to the murmur. Some dogs and cats with heart murmurs may live normal lives and never require treatment. Other pets with more severe heart disease will benefit significantly from treatment that can range from oral medications to surgery. However, surgery is not a typical option in veterinary cardiology except for a few congenital heart defects that can be fixed by an operation. The treatment plan for your pet will be designed to improve your pet’s quality of life as well as extend the time you have together. Keep in mind that a heart murmur is only a clinical finding – not an absolute diagnosis of disease in your pet.