Treadmill ECG Or CT Coronary Angiogram: Going Beyond The Basic Tests

Heart disease is a silent killer that often shows no symptoms until it’s too late. Many people undergo a Treadmill Electrocardiogram (Treadmill ECG) as part of their heart health check-up, but is a Treadmill ECG alone enough to detect coronary artery disease (CAD)? While a Treadmill ECG is a useful first-line test, it has limitations—it can only help to detect blockages if they are more than 70% obstructed. This means that early-stage CAD may go unnoticed, putting you at risk of a heart attack. A CT Coronary Angiogram (CTCA), however, provides a detailed scan of your coronary arteries and can detect substantially lower level of blockage, even before symptoms appear. So when should you choose a Treadmill ECG or CT Coronary Angiogram? Let’s break it down.

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What Is A Treadmill ECG?

An Electrocardiogram (ECG) is a quick, painless, and non-invasive test that records the electrical activity of the heart. It helps detect irregular heart rhythms, past heart attacks, and stress on the heart muscles. A Treadmill ECG, also known as a Treadmill Stress Test or Exercise Stress Test, is a diagnostic test that evaluates how the heart responds to physical exertion. During the test, the patient walks or runs on a treadmill while being connected to an ECG machine, which monitors heart rate, rhythm, and electrical activity.

🔬 How Does ECG Work?

✔ Small electrodes are placed on the chest, arms, and legs.
✔ The machine records electrical signals from the heart.
✔ Doctors analyse the pattern to detect abnormalities.

📌 Limitations Of Treadmill ECG In Detecting Coronary Blockages

A Treadmill ECG can only detect problems caused by an arterial blockage if the artery is more than 70% obstructed, meaning mild to moderate artery narrowing may go undetected.

💡 What Does A 70% Blockage Mean?

• A 70% blockage means that plaque buildup has significantly reduced blood flow in an artery.
• However, heart attacks can still occur with smaller blockages if plaque suddenly ruptures.
• Relying on an ECG alone may miss early signs of heart disease, leaving you vulnerable to sudden complications.

What Is A CT Coronary Angiogram?

A CT Coronary Angiogram (CTCA) is an advanced imaging test that provides a high-resolution, 3D scan of the coronary arteries. Unlike a Treadmill ECG, it can detect any level of plaque buildup, even before symptoms develop.

🔬 How Does CT Coronary Angiogram Work?

✔ A contrast dye is injected into the bloodstream.
✔ A high-speed CT scanner captures detailed images of the coronary arteries.
✔ Doctors assess blockages, narrowing, and potential risks.

📌 Why CT Coronary Angiogram Is More Accurate Than a Treadmill ECG

✅ Detects blockages at any stage—even minor plaque buildup.
✅ Identifies soft plaques that may rupture and cause heart attacks.
✅ Provides a clear picture of blood flow and heart artery condition.

💡 With a CT Coronary Angiogram, you can detect heart disease before it becomes life-threatening!

Learn More: How To Find The Best Cardiologist In Singapore >>

Treadmill ECG Or CT Coronary Angiogram: Which Test Do You Need?

📌 If you have symptoms like chest pain, shortness of breath, or a family history of heart disease, a CT Coronary Angiogram may provide a more accurate assessment of your heart health.

Take Control Of Your Heart Health Today

When it comes to early heart disease detection, choosing between a Treadmill ECG or CT Coronary Angiogram can make all the difference. While a Treadmill ECG is useful for detecting heart rhythm issues, it may not reveal early coronary artery blockages. A CT Coronary Angiogram provides a much clearer, more accurate picture of your heart health, allowing for early intervention.

💙 Don’t wait for symptoms—book a heart screening today and take control of your future!

Explore health screening services from our partners on our 365mall, or click below for an appointment for screening or cardiologist consultation.

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