Can a dog's heart murmur suddenly become severe in just one year?

Question

How many annual visits does it take to find out that your dog has a stage 5 heart murmur. can it go to no murmur to stage 5 murmur in 12months. Pet's info: Dog | Chihuahua | Male | neutered | 7 years and 4 months old | 8.8 lbs

Angel Alvarado, LVT · Accepted Answer

Depending on the underlying cause, a murmur may intensify quickly. A murmur is an abnormal heart sound, it is not an accurate indicator of heart function. To accurately evaluate cardiac function, you would need to have an echocardiogram (ultrasound of the heart) performed on Muff. Your veterinarian may do this or may refer you to a veterinary cardiologist.

Can a dog's heart murmur suddenly become severe in just one year?

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