{ "@context": "https://schema.org", "@type": "BlogPosting", "headline": "Your dog was diagnosed with a heart murmur – what's next?", "description": "Did your vet hear a heart murmur in your dog? Read when a murmur requires further examination and what a cardiac ultrasound reveals. ", "datePublished": "May 20, 2026", }

Your dog was diagnosed with a heart murmur – what's next?

Your dog has a heart murmur – what's next?

📞 Book a cardiac examination: 010 739 9130

📍 Sacrum Animal Hospital, Porttisuontie 13, 01200 Vantaa

Quick answer: A heart murmur is a finding, not yet a diagnosis. Further examinations are especially recommended if the murmur is loud, the dog shows symptoms, or if it's a breed predisposed to heart conditions.

A heart murmur can be alarming for owners, but its significance varies. Some murmurs are mild, while others indicate a structural change in the heart that warrants investigation.

When to see a vet?

Contact your veterinarian if any of the following apply:

  • The murmur is loud or a new finding.
  • The dog has a cough, fatigue, or shortness of breath.
  • The puppy is not growing or is lethargic.
  • It is a high-risk breed or a breed predisposed to heart conditions.
  • Your veterinarian recommends an echocardiogram.

What could be causing the symptom?

1. Valvular disease

In small adult dogs, a murmur may be caused by valvular degeneration.

2. Myocardial disease

In some breeds, myocardial diseases can cause a heart murmur only at a later stage of the disease.

3. Innocent murmur

Puppies may have murmurs that disappear as they grow, but monitoring is important.

What can you do at home?

  • Document any symptoms, such as coughing, when it occurs, and any fatigue.
  • Avoid strenuous exercise if your dog shows symptoms.
  • Follow your veterinarian's recommendation for further examinations.

What happens at the vet's?

A cardiac ultrasound examines the heart's structure, valve function, and any potential changes. The examination is painless.

Sacrum Animal Hospital can help

If you are unsure about the severity of a symptom, it's better to contact us than to wait too long. A professional can help assess whether it's an emergency or if an appointment can be scheduled for an examination.

📞 Appointment booking for cardiac examinations: 010 739 9130

📍 Sacrum Animal Hospital, Porttisuontie 13, 01200 Vantaa

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