How Bad Is A Grade 3 Heart Murmur In Dogs?

by | Last updated on January 24, 2024

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Grade III murmurs have a loudness that falls in the middle of grades II and IV.

Most murmurs that cause serious problems

are at least a grade III. Grade IV murmurs are loud and can be heard on either side of the chest.

How serious is a Grade 3 heart murmur in puppies?

Grades of heart murmurs in dogs

Grade 1 – These are the least serious. They are extremely soft in sound and barely audible. Grade 2 – A soft sound heard through the use of a stethoscope. Grade 3 –

Intermediate loudness and radiates to more than one location

.

Can a dog live with a Grade 3 heart murmur?


Some pups can live their entire life with a murmur and experience no issues, but if the condition is associated with underlying heart disease, it can be fatal

. In fact, the dog is at risk for developing congestive if the disease becomes severe.

How Long Can dogs live with a heart murmur?


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

. If you have any questions or concerns about murmurs, please contact your veterinarian.

Can a puppy outgrow a Grade 3 heart murmur?

It is very common for young puppies, especially large breed puppies, to develop an innocent heart murmur while they are growing rapidly. The murmur may first appear at 6-8 weeks of age, and

a puppy with an innocent heart murmur will usually outgrow it by about 4-5 months of age

.

Can you walk a dog with a heart murmur?

Dogs with a heart murmur are usually intolerant of hot and humid days so

take short walks very early in the day

. You can use more mental exercise activities in the summer to help keep their mind stimulated, such as puzzle games. The rest of the year you can set a schedule to suit your dog.

What causes a Grade 3 heart murmur in dogs?

Most commonly, heart murmurs in small dogs are caused by

a leaky mitral valve

(the heart valve in between the left atrium and left ventricle). The mitral valve allows blood to flow from the left atrium to the left ventricle but does not allow for blood to flow back into the left atrium.

When should I worry about a heart murmur in my dog?

If your dog has a heart murmur and you see coughing, congestion, change in breath sounds or rapid breathing, exercise intolerance, weakness or “fainting,” gray or blue gums, abdominal distention, or lethargy, you should most certainly seek medical attention.

How much does it cost to treat a dog with a heart murmur?

General Cost to Treat Heart Murmurs in Dogs

Conditions that can be managed with medication alone may cost approximately

$100-$800

. On the other hand, some heart conditions, such as congenital defects may require surgery.

How can I help my dog with a heart murmur?


There is no direct treatment for heart murmurs in dogs, but the causes can often be treated, which may reduce the vibrations in the heart

. Your veterinarian will find the cause of the heart murmur and then form a treatment plan. Vets give heart murmurs in dogs a grade of I to VI.

Should I put my dog down with congestive heart failure?

If the pet has a condition like congestive heart failure, or untreatable brain cancer — a disease that will, unchecked, lead to a painful death —

the recommendation may be for euthanasia sooner instead of later

.

How serious is a heart murmur in an older dog?

While they may sound scary, heart murmurs are

not always dangerous

. If your senior pup has a low-grade murmur and no accompanying symptoms, there is little cause to worry. Your vet will likely recommend monitoring your dog's condition to make sure it doesn't decline.

What breeds of dogs are prone to heart murmurs?

  • Cavalier King Charles Spaniel. Adorable face, long ears, and hairy paws? …
  • Dachshund. Small yet spunky, Doxies are overflowing with personality. …
  • Doberman Pinscher. …
  • Boxer. …
  • Golden Retriever. …
  • Schnauzer. …
  • Great Dane. …
  • Irish Wolfhound.

What are the symptoms of a dog dying from heart failure?

A dog with congestive heart failure may

cough, have trouble breathing, experience fatigue, loss of appetite, or might die suddenly

.

What food should I feed my dog with a heart murmur?

  • Provide your pet a high-quality natural meat-based diet with at least 25-30% protein (DM basis) for dogs and 40% protein (DM basis) for cats.
  • Make sure your pet LIKES the food.

Can stress cause heart murmur in dogs?


Sometimes, stressed or anxious dogs may have a heart murmur

. This is usually because the heart is pumping very quickly. Like with physiologic murmurs, they eventually go away on their own. If your dog finds trips to the vet stressful, ask your veterinary team for tips to help relieve fear and anxiety.

How do you strengthen a dog's heart?


Frequent exercise

: Getting your dog adequate exercise including frequent cardiac exercise, helps keep your dog or cat healthy and happy. Consider walking, running, playing, swimming, hiking, or dog-related sports such as flyball and agility.

What is a heart cough in dogs?

by Margaret Sayer, DVM | Feb 16, 2018 | Blog Post, Cardiology. Coughing can be

a telltale sign that a dog with a heart murmur is experiencing heart failure

. When dogs have a heart murmur, their hearts can become enlarged and lose the ability to pump blood into their lungs and the rest of their body.

Why do dogs with heart murmurs cough?

The most common clinical sign of congestive heart failure (CHF) is persistent coughing accompanied by difficulty breathing. This is due mainly to

pulmonary edema or the accumulation of fluid in the lungs

. The enlarged heart will also push against the trachea, causing irritation that can induce a cough.

What are the end stages of congestive heart failure in dogs?

  • Frequent coughing.
  • Coughing up foam, or bloody foam.
  • Labored breathing.
  • Lethargy.
  • Weakness, or inability to exercise.
  • Fainting episodes.
  • Distended abdomen.
  • Decrease in appetite.

Are heart murmurs common in older dogs?

Older dog heart murmurs, diseases and problems are

fairly common

, and your senior dog may develop some type of heart disease… eventually. This is because the heart is a very complex organ. As your dog's body ages, so do the vital organs keeping the body going.

What does Enalapril do for dogs?

Enalapril is a drug that is used in dogs and cats with heart and or kidney problems. Enalapril

causes small blood vessels to relax (vasodilation)

. This makes it easier for blood to circulate, which then decreases blood pressure and decreases the work load on the heart.

Rebecca Patel
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Rebecca Patel
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