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How serious is a heart murmur in puppies?

【Expert answer】

Created: 2022-07-07 08:45:10

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The presence of a heart murmur in a puppy could signify congenital disease with a spectrum of possibilities, ranging from mild disease with no clinical significance to severe, possibly intractable disease. However, not all murmurs are pathologic and 'innocent' murmurs are frequent in young puppies.


Can a puppy survive a heart murmur?

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.

Should I worry if my puppy has a heart murmur?

If you have a new puppy or kitten: Loud heart murmurs (Grade 3-4/6 to 6/6) in a new puppy or kitty and soft heart murmurs that persist beyond 14-16 weeks of age should be evaluated by a cardiologist. This may indicate that congenital (present at birth) heart disease is present.

How long can a puppy live with 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.

Are heart murmurs in puppies fatal?

Heart murmurs with pathological heart diseases usually progress into congestive heart failure. This is a serious condition and can be fatal. Commonly, dogs that are in heart failure will have an accumulation of fluids in their lungs.

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