The heart is the hardest working muscle in the body. It beats roughly 100,000 times a day, pumping blood to every nose, tail, and paw.

Most of us are familiar with the sound of a heartbeat (the classic lub-dub). But did you know that before every single beat, there is a tiny spark of electricity that triggers it?

At Ormeau Vet, when we need to check if that electrical wiring is working correctly, we use an ECG (Electrocardiogram).

If one of our vets at Ormeau has recommended an ECG for your pet, here is what that means and why it is such a vital tool for cardiac care.

What is an ECG?

ECG stands for Electrocardiogram (sometimes called an EKG).

Think of the heart like a house.

• An Ultrasound (Echocardiogram) looks at the plumbing and walls—checking if the valves are leaky or the muscle is too thick.

• An ECG checks the electricity.

It records the tiny electrical impulses that travel through the heart muscle, telling it when to contract and relax. By looking at the pattern of these squiggly lines on a screen, we can see if the heart is beating too fast, too slow, or out of rhythm (Arrhythmia).

When Do We Recommend It?

We use ECGs in both routine and emergency situations:

1. The “Fainting” Pet (Syncope)

If your dog has suddenly collapsed or had a “wobbly turn” at the park, it might be because their heart paused or started beating so fast that it couldn’t pump blood effectively. An ECG helps us catch these “electrical storms.”

2. Pre-Anesthetic Screening

For older pets or high-risk breeds (like Boxers or Dobermans), we want to ensure the heart’s rhythm is stable before we administer anesthesia.

3. Monitoring During Surgery

You know the beep… beep… beep… sound you hear in hospital TV shows? That is an ECG! We attach every single surgical patient to an ECG monitor to watch their heart rate and rhythm continuously while they are asleep.

4. Investigating Irregular Heartbeats

Sometimes, when we listen to your pet’s chest with a stethoscope, we hear a “skipped beat” or a chaotic rhythm. An ECG prints out that rhythm so we can identify exactly what type of arrhythmia it is and choose the right medication.

What to Expect During Your Visit

The good news is that an ECG is completely non-invasive and painless. It is a “voltmeter”—it measures electricity; it does not put electricity into your pet!

1. The Setup

Your pet will usually lie on their right side on a comfortable padded table. We attach 3 to 4 small clips (electrodes) to the skin on their legs/paws.

2. The Connection

Electricity doesn’t travel well through fur or dry skin. To get a good reading, we apply a little bit of rubbing alcohol or conductive gel to the clips.

• Note: This feels a little cold/wet, which is usually the only part pets object to!

3. The Recording

We need about 30–60 seconds of stillness. This is the hardest part for wiggly puppies! Our Ormeau vet nurses are experts at “low-stress handling,” using calm voices and gentle pats to keep your pet relaxed.

4. The Result

The machine produces a “trace” (a graph of the heartbeat). Our vets analyze the P-waves, QRS complexes, and T-waves to diagnose the issue. For complex cases, we can email this digital file to a specialist Veterinary Cardiologist for a second opinion.

Heart issues can be scary for owners, but modern veterinary medicine allows us to manage many cardiac conditions very effectively with medication. The key is knowing exactly what we are treating.

If you are concerned about your pet’s heart health, or if they have had a fainting episode, contact Ormeau Vet  immediately.