An electrocardiogram, or ECG, records the electrical activity of your pet's heart. It shows how fast the heart is beating and whether the rhythm is regular, which helps your vet find and understand heart rhythm problems.

An ECG is quick, painless and non-invasive. It's often used alongside other tests, such as X-rays, bloodwork or an echocardiogram, to build a complete picture of your pet's heart health.

When Your Vet May Recommend an ECG

Your vet may suggest an ECG if they hear an irregular heartbeat or a very fast or slow heart rate during an exam. It can also be helpful if your pet shows signs such as:

  • Fainting, collapse or sudden weakness
  • Tiring easily or not wanting to exercise
  • Coughing or fast breathing at rest
  • Pale gums

An ECG may also be used before anesthesia or to monitor pets with known heart disease. Collapse or trouble breathing is an emergency, so come in right away or contact the nearest emergency hospital.

What to Expect During Your Pet's ECG

Your pet usually lies on their side on a padded table while small sensors are gently attached to the skin, often on the legs. The sensors pick up the heart's electrical signals for a few minutes while your pet rests quietly. Most pets don't need sedation.

Your vet reviews the tracing to check the heart rate and rhythm. If there's a problem, they'll explain what the results mean and talk with you about treatment and any further tests your pet may need.

Questions about Electrocardiogram (ECG)?

Call us or book an appointment online, and our team will help you decide on the next step for your pet.

Electrocardiogram (ECG): Frequently Asked Questions

Is an ECG painful for my pet?
No. An ECG is painless and non-invasive. Small sensors are gently attached to the skin, and your pet simply needs to lie still for a few minutes while the heart's rhythm is recorded.
Does my pet need to be sedated for an ECG?
Most pets don't need sedation, since sedatives can change the heart's rhythm. Our team gently holds and comforts your pet during the test. Your vet will let you know if anything different is needed.
What's the difference between an ECG and an echocardiogram?
An ECG records the heart's electrical activity and rhythm. An echocardiogram is an ultrasound that shows the heart's structure and how blood flows through it. Your vet may recommend one or both.
Can heart rhythm problems in pets be treated?
Many rhythm problems can be managed with medication and regular monitoring, and some are caused by other conditions that can be treated. Your vet will build a plan based on your pet's results.

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