(Picture Credit: Getty Images)Heart murmurs in dogs are extra vibrations or sounds in the heart that come from abnormal blood flow. A heart murmur is not a condition on its own, but rather a symptom of an underlying condition.There is no direct treatment for a heart murmur in dogs, but the causes of the heart murmur can often be treated, which may reduce the vibrations in the heart. Your veterinarian will be able to determine the cause of the heart murmur and then form a treatment plan.Vets give heart murmurs in dogs a grade of I to VI. Grade I heart murmurs are barely audible, while grade VI heart murmurs can often be heard even without a stethoscope.This doesn’t necessarily correlate to the severity of the underlying cause of the heart murmur. Vets also classify heart murmurs based on the location of strongest intensity and the pattern that the vibrations follow.These classifications, along with any other symptoms dogs have, help further narrow down the cause of the heart murmur, allowing vets to form a proper diagnosis and treatment plan.Here is what you should know about the symptoms, causes, and treatments associated with heart murmurs.Symptoms Of Heart Murmur In Dogs (Picture Credit: Getty Images)Not all heart murmurs in dogs result in apparent symptoms. Some heart murmurs are completely benign and disappear with time.However, many heart murmurs are associated with heart disease. If you see the signs of heart disease accompanied by a heart murmur, then you should consult your veterinarian immediately.Here are a few signs of heart disease that may appear along with a heart murmur:Exercise intoleranceLethargy or weaknessPanting, coughing, or difficulty breathingPale gums or mucusDistended abdomen or bloated appearanceFainting or collapseCauses of Heart Murmur In Dogs (Picture Credit: Isa Foltin/Getty Images)Sometimes heart murmurs are benign, and dogs may just grow out of them. Other times, a heart murmur can result from and indicate more serious medical conditions.It is common for young puppies to develop heart murmurs, though these are usually benign and known as physiologic heart murmurs. They occur when puppies, especially large breeds, grow quickly, and generally they disappear on their own after a few months. These cause no symptoms and aren’t a cause for concern.Heart murmurs in dogs can be also caused by a variety of medical conditions. They can be congenital (present at birth), result from heart defects, or appear with infections, inflammation, or other diseases.Here are a few of the conditions that can cause a heart murmur:EndocardiosisEndocarditisDysplasiaCardiomyopathyAtherosclerosisAnemiaHeartwormHyperthyroidismValvular stenosisPulmonic stenosisTetralogy of FallotTumorsTreatments For Heart Murmur In Dogs (Picture Credit: Getty Images)Vets don’t treat heart murmurs in dogs directly, as they’re not a condition on their own, but vets will address the underlying causes.Treatment can vary greatly depending on the cause and severity of the condition. Physiologic heart murmurs in puppies often don’t require treatment, but puppies still need monitoring to make sure another condition doesn’t develop. Simple dietary changes may treat mild heart murmurs.Conditions that cause heart murmurs must be addressed by a veterinarian. In the case of heart defects, dogs may need surgery to correct the condition. Tumors may require chemotherapy. Vets may treat other issues with medication.Your veterinarian will develop a proper treatment plan after forming a diagnosis if your dog suffers from a heart murmur. It is important to get regular check-ups, as vets often catch heart murmurs through routine vet visits.Has your dog ever suffered from a heart murmur? What was the cause? Let us know in the comments below!Source

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