Echocardiogram (Echo)
An ultrasound of the heart that shows its size, shape, and how well it's pumping. The most important diagnostic tool for heart disease in dogs.
What it measures
Chamber sizes (LVIDd, LVIDs), wall thickness, valve function, blood flow patterns, left atrial size (LA:Ao ratio), fractional shortening (FS%), and ejection fraction. These measurements determine the stage of heart disease and guide treatment decisions.
What to expect
Your dog lies on a padded table (usually on their side) while a cardiologist moves an ultrasound probe across their chest. A small area of fur may be shaved. The procedure is painless and typically takes 20-40 minutes. Most dogs tolerate it well without sedation. You may be able to watch the screen during the exam.
Typical cost
$300-600 for the exam, depending on location and whether it includes a Doppler study (most do). Follow-up echos may be slightly less expensive.
How often
Screening: annually for at-risk breeds starting at age 2-4. Monitoring: every 3-12 months depending on disease stage. Stage B1 MMVD: every 6-12 months. Stage B2: every 3-6 months. After starting new medications: 2-4 weeks.
Conditions detected
Breeds that need this test
In-depth guide
Read our complete guide to echocardiogram (echo)for dogs →
Need to schedule a echo?
Find a board-certified veterinary cardiologist near you who can perform this test and interpret the results.
Find a cardiologist →Medical disclaimer: Heart Dog Club provides educational information only and is not a substitute for professional veterinary advice, diagnosis, or treatment. Always consult a qualified veterinarian or board-certified veterinary cardiologist (DACVIM-Cardiology) regarding your dog's health.